West Bengal Police SI (Prelims) 05 Dec 2021 Official Paper (Previous Year Paper)

The correct answer is -Amitosis.

Key Points

• Amitosis
• Direct cell division (also known as karyostenosis, asymmetric cell division, or binary fission), or mitosis.
• For this kind of cell multiplication, mitosis is not required, despite popular belief.
• The ciliate polyploid macronucleus reproduces by amitotic nuclear division.
• The alleles from each parent are randomly distributed during amitosis, as opposed to being evenly split during regular mitosis.
• Amoeba uses amitosis or binary fission to duplicate themselves.
• It is the asexual method of reproduction for Amoeba.

Additional Information

• Mitosis
• It is the division where the daughter cells come from one parent cell.
• The daughter and parent cells are identical to each other.
• The division includes five steps, namely
• Prophase
• Metaphase
• Anaphase
• Telophase
• The alleles are distributed equally after the mitotic division.
• Meiosis
• The division occurs in gamete-producing organs like ovaries and testicles.
• In this division, the genetic material is segregated into four cells.
• It has two division stages
• Meiosis I
• Meiosis II
• Each meiosis Division stage has four phases, namely
• Prophase
• MEtaphase
• Anaphase
• Telophase
• After completing meiosis I and meiosis II, four daughter cells are produced that contain the n chromosomes instead of 2n.
• Mycosis
• Mycosis is a fungal infection that may affect any part of the body.
• Whether it's the skin, the subcutaneous tissue, or the organs.
• A wide variety of fungi may cause mycosis.
• A variety of variables, such as:
• Hot and humid climate.
• Wearing wet clothes or swimsuits for long durations.
• Using a pair of closed, synthetic shoes regularly.
• Do not remove your shoes at the door of a hotel or fitness center.
• Rather than being a reproducing division, it is a debilitating fungal illness that may be treated.

Given:

Simple interest (SI) is Rs. 5100 more

N = 3 years

Rate of interest (R) is 1 % higher

Concept used:

\(SI = {PNR \over 100}\)

Calculation:

Let, P be 'x' and R be 'R + 1'

Substitute the values in the formula,

⇒ \(SI = {PNR \over 100}\)

We know that SI is Rs. 5100 more

⇒ \(SI + 5100 = {x(3)(R + 1) \over 100} \)

⇒ \({PNR \over 100} + 5100 = {x(3)(R + 1) \over 100} \)

⇒ \({x(3)R \over 100} + 5100 = {x(3)(R + 1) \over 100} \)

⇒ \({x(3)R \over 100} - {x(3)(R + 1) \over 100} = - 5100 \)

⇒ \(- {3x (R + 1 - R)\over 100} = - 5100 \)

⇒ \({3x (R + 1 - R)\over 100} = 5100 \)

⇒ \({3x (R + 1 - R)} = 510000\)

⇒ \({3x} = 510000 \)

⇒ \(x = {510000 \over 3} \)

⇒ \(x = 170000;\)

∴ The sum is Rs. 1,70,000.

1. The word 'PRONE' cannot be made from the word "PHOTOSYNTHETIC" because letter 'R' is used in given word 'PRONE'.

2. The word 'THOSE' can be made with the word "PHOTOSYNTHETIC" because all the letters of the word are present in the given word.

3. The word 'COTTON' can be made with the word "PHOTOSYNTHETIC" because all the letters of the word are present in the given word.

4. The word 'SCENT' can be made with the word "PHOTOSYNTHETIC" because all the letters of the word are present in the given word.

∴ Here, the word 'PRONE' cannot be made from the given word "PHOTOSYNTHETIC".

Hence, the correct answer is "PRONE".

The correct answer is Singapore.

Key Points

• On  21 October 1943, Subhash Chandra Bose proclaimed the formation of the Provisional Government of Free India in Singapore.
• It was also called Azad Hind or Free India.
• It was established with financial, political and military support from Imperial Japan.
• The Indian National Army (INA) was the army of the Azad Hind government.
• Azad Hind had diplomatic ties with Nazi Germany, the Italian Socialist Republic, the Empire of Japan, Thailand, Burma, Croatia, Manchukuo and the Second Philippine Republic.

Additional Information 

• Subhas Chandra Bose was born on 23^rd January 1897, in Cuttack, Orissa Division, Bengal Province, to Prabhavati Dutt Bose and Janakinath Bose.
• His Jayanti is celebrated as 'Parakram Diwas' on 23^rd January.
• At Rangoon and Singapore, Subhash Chandra Bose established two Indian National Army Headquarters.
• The Rani Jhansi regiment was created as a women's unit. Lakshmi Sehgal was in charge of the regiment.

The logic followed here is :-

∴ Here, 'leaf' is coded as '2' and 'is' is coded as '4'.

Hence, the correct answer is "2 and 4".

Concept used:

A number which can be divided exactly by itself and 1 is known as prime number.

Calculation:

The prime numbers between 1 and 10 = 2, 3, 5, 7

The prime numbers between 10 and 100 are = 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97

∴ The total number of two digit prime numbers are 21.

The correct answer is Neptune.

Key Points

• A dwarf planet, as defined by the International Astronomical Union, is a celestial entity that orbits the sun.
• It has enough mass to assume a roughly spherical shape.
• It has not cleared the area around its orbit and is not a moon.
• This classification of solar system bodies was established by the International Astronomical Union (IAU) in August 2006, with Pluto,
• The even more distant object Eris, and the asteroid Ceres serve as the category's inaugural members.
• Neptune is still regarded as a planet since its mass exceeds that of anything else that passes through its orbit (including Pluto).
• Since Neptune is 8000 times more massive than Pluto, Pluto is a dwarf planet and Neptune is a planet.

 Additional Information

• The dwarf planet is a body outside of a natural satellite (the moon) that orbits the Sun.
• It is conceptually smaller than the planet Mercury but is large enough for its own gravity to have significantly rounded its shape.
• These bodies, unlike big planets, are not massive enough to have attracted the majority of neighbouring smaller bodies by gravitational pull, preventing them from enlarging.
• The IAU decided to set up a procedure for identifying such entities that are currently known or that would be identified as dwarf planets.

Preparing the family tree using the following symbols:

According to the given information,

The given expression is :

'N # A $ B × D' → N is mother of A, A is father of B, B is sister of D.

∴ Here, 'D' may be 'grandson' or 'granddaughter' cannot be determined.

Hence, the correct answer is "Can not be determined".

The correct option is Pressure.

Key Points

• A unit of pressure based on an absolute scale, the torr is equal to precisely 1760 of a standard atmosphere 101325 Pascal.
• One torr equals exactly 133.32 Pascal.
• Pressure is the term for the force acting on a unit area of a surface.
• It operates perpendicular to the surface being applied pressure.

Additional Information

Force:

• The push or pull on a mass-containing item changes its velocity.
• An external force is an agent that has the power to alter the resting or moving condition of a body.
• It has a direction and a magnitude.
• The newton, abbreviated N, is the SI unit of force.

Work:

• The result of force and displacement is called work.
• Work done when a force acts on an object is just the sum of the force's strength and the displacement the force causes in the object.
• Joule is the SI unit of work (J).
• The work accomplished by the force of one newton creating a displacement of one meter is known as a joule.

Momentum:

• Momentum is characterized as the intensity of a body's motion.
• As momentum depends on both velocity and the direction of the body's motion, it is quantified by "mass velocity".
• The Newton-second can be used as the momentum unit (Ns).
• In the CGS system, the unit of momentum is the gram-centimeters per second (g-cm/s), where the mass is measured in grams and the velocity in centimeters per second.

The correct answer is -Influenza.

Key Points

• Influenza
• The flu is a popular name for a respiratory illness caused by influenza viruses.
• Symptoms vary from moderate to severe and commonly
• include fever,
• runny nose,
• sore throat,
• muscular discomfort,
• headache,
• coughing, and
• exhaustion.
• In youngsters, this most often manifests as diarrhea and vomiting.
• There are four recognized strains A, B, C, and D influenza viruses
• IAV, or influenza A virus, is present in various animals, including humans and pigs.
• Humans are the primary hosts for Influenza A (HAV), Influenza B (IAV), and Influenza C (ICV) viruses.
• Whereas cattle and swine are the natural hosts for Influenza D (IDV).
• Seasonal epidemics caused by IAV and IBV circulate among people, whereas ICV infects youngsters mildly.

Additional Information

• Pneumonia
• It is an infection of the alveoli, the air sacs in the lungs.
• Symptoms may include a
• productive or dry cough,
• chest discomfort,
• fever, and
• trouble breathing.
• Both viruses and bacteria are capable of causing, it, however, Streptococcus pneumoniae is the most common bacterial culprit.
• For those who have compromised immune systems, this condition is common.
• Typhoid
• Salmonella serotype Typhi is the causative agent of typhoid.
• Depending on the severity, symptoms might appear anywhere from six hours to thirty days following exposure.
• In many cases, a high fever develops gradually over a few days.
• Typhoid occurs when one consumes either food or water tainted with an infected individual's stool.
• Polluted water and a lack of proper hygiene are other potential dangers.
• Diphtheria
• Corynebacterium diphtheriae is the causative agent of diphtheria infection.
• The majority of illnesses cause no symptoms and progress very slowly.
• Typical early symptoms include a high temperature and a sore throat.
• Transmission of diphtheria often occurs via close personal contact or by breathing contaminated air.
• Contaminated items may potentially play a role in the disease's transmission.

The logic followed here is :-

By using BODMAS RULE :

Given expression is : (2 + 27 − 3 + 2 × 3 ÷ 2)

After replacing operators in place of alphabets the expression is as follows : 2 × 27 ÷ 3 × 2 + 3 - 2

= 2 × 27 ÷ 3 × 2 + 3 - 2

= 2 × 9 × 2 + 3 - 2

= 36 + 3 - 2

= 39 - 2

= 37

Hence, the correct answer is "37".

The correct answer is Pancreas.

Key Points

Pancreas:

• The pancreas is a mixed gland having both endocrine and exocrine functions.
• The endocrine portion secretes hormones, insulin, and glucagon while the exocrine portion secretes an alkaline pancreatic juice containing enzymes and bicarbonate.

Additional Information Exocrine glands:

• It is a gland that makes substances such as sweat, tears, saliva, milk, and digestive juices, and releases them through a duct or opening to a body surface.
• Examples: Sweat glands, lacrimal glands, salivary glands, mammary glands, and digestive glands in the stomach, pancreas, and intestines.

Endocrine glands:

• The glands that make up the endocrine system produce chemical messengers called hormones that travel through the blood to other parts of the body known as Endocrine glands.
• Examples: Pituitary, thyroid, parathyroid, thymus, and adrenal glands.

Liver:

• It is in the upper right section of the abdomen and sits below the diaphragm.
• It is the largest solid organ and the largest gland in the human body.
• It carries out over 500 essential tasks.
• The roles of the liver include detoxification, protein synthesis, and the production of chemicals that help digest food.
• It is part of the digestive system.
• The liver is the largest gland.

Given:

12, 15, 20 and 25

Concept used:

LCM = Least Common Multiple

Calculation:

Now, finding the LCM of 12, 15, 20 and 25

LCM = 2 × 2 × 3 × 5 × 5 = 300

From the given options,

The  multiples of 300 are 300 and 600.

∴ The least number which is divisible by 12, 15, 20 and 25 is 300.

The least possible Venn diagram for the given relation is as shown below :

• Some Singers can be Musician.
• Some Musician is doctor.
• Some Doctor can be Singer.

Hence, the correct answer is "Option 4".

The correct option is chances of storm.

Key Points

• The atmospheric pressure perfectly balances the weight of the mercury column in the barometer.
• A drop in atmospheric pressure causes a drop in mercury levels to the point where the weight of the mercury column is once more equal to the altered atmospheric pressure.
• The atmosphere is typically thin in low-pressure regions.
• These places receive inward-moving winds.
• Clouds and condensation are created as air rises.
• This means that the chances of a storm are there.

Additional Information

Barometer:

• An instrument known as a barometer is used to measure atmospheric pressure, also known as barometric pressure.
• The air layers that surround Earth are known as the atmosphere.
• Gravity drags that air to Earth, it exerts pressure on everything it touches.
• This pressure is measured using barometers.

Atmospheric Pressure:

• Everything you touch is pressed upon by the weighty air that surrounds you.
• This pressure is referred to as air pressure or atmospheric pressure.
• It is the force that the air above a surface applies to it while gravity pulls the surface toward Earth.

The correct answer is Vishakhadatta.

Key Points

• The Mudrarakshasa is a Sanskrit-language drama by Vishakhadatta.
• It tells the story of India's first king Chandragupta Maurya.
• Although it is not entirely fake, the play is creative writing.
• From the late fourth century through the seventh century CE, it has been dated.

Additional Information

• A fascinating period in Indian history is depicted in Vishakadatta's political thriller Mudrarakshasa, which was published in the sixth century CE.
• Chanakya, Chandragupta Maurya, and the Nandas ruled throughout this time period.
• By this time, the final Nanda king has left the world, and Chandragupta and Chanakya in Kusumapura have seized control of his realm.
• The little subordinate monarch Malayaketu left Chandragupta's court after his father was poisoned.
• Despite his escape, Malayaketu still has the trustworthy and shrewd minister Rakshasa on his side.

Given:

Number of men = 45

Number of days = 12

Number of electric bulbs = 10000

Work to be done in = 9 days

Concept used:

⇒ \({M1D1 \over W1} = {M2D2 \over W2}\)

Calculation:

Let 'x' be the number of more men required

Substitute the given values in the formula

⇒ \({(45)(12) \over 10000} = {(45 + x)(9) \over 10000}\)

⇒ \({(45)(12)} = {(45 + x)(9)}\)

⇒ \(540 = 405 + 9x\)

⇒ \(540 - 405 = 9x\)

⇒ \(135 = 9x\)

⇒ \(x = {135 \over 9}\)

⇒ \(x = 15\)

∴ The number of more men would be employed to meet the order is 15.

The correct answer is Subarnarekha.

Key Points

• India's first alumina refinery, Muri Works of Hindalco Industries Limited, was established in 1948 by the former Indian Aluminium Company (INDAL).
• After acquiring INDAL in 2005, Hindalco consolidated the factory with itself.
• The factory is situated near Chota Muri along the banks of the Swarnarekha River, 65 kilometres from Ranchi, the state capital of Jharkhand.
• The Muri plant's initial installed capacity was 4 KTPA.
• It has gone through several stages of debottlenecking and expansion over the years to reach its current capacity of 450 KTPA.

Important Points

• For customers in the aluminium, metal, refractory, glass, and alum manufacturing industries, the refinery produces standard and special grades of alumina and alumina hydrate.
• 334.2 acres are devoted to the plant and colony collectively.
• A coal-based cogeneration power plant exists to continuously provide electricity to the employee housing colony and steam to the alumina refinery.

Given:

Tea A = Rs. 250 per kg

Tea B = Rs. 150 per kg

Ratio = 2 : 5

Selling price = Rs. 200 per kg

Concept used:

Profit = Selling price - Cost price

Profit % = \( {Profit \over Cost ;price} \) × 100

Calculation:

Cost price = (250 × 2) + (150 × 5) = 500 + 750 = 1250

Selling price = 200 × (2 + 5) = 200 × 7 = 1400

Substitute the values in the formula

Profit = 1400 - 1250 

Profit = 150

Now,

Profit % = \( {Profit \over Cost ;price} \) × 100

Profit % = \( {150 \over 1250} \) × 100

Profit % = 12%

∴ The profit percentage of tea seller is 12%.

The correct answer is Tor.

Key Points

• The term "darknet" describes encrypted Internet networks that are not included in search engines like Google, Yahoo, or Bing.
• It is a portion of the Internet that can only be accessed by specialised applications like Tor (The Onion Router) or I2P (Invisible Internet Project).
• These are networks that can only be accessed with authorisation, specific software, and configurations.
• These are not accessible to the broader Internet public.
• Google chrome, ios, and Linux are the normal web surfaces.

Additional Information

• This covers both safe locations like business websites and academic databases as well as those with shadier content like black markets, fetish communities, hacking, and piracy.
• Dark net and dark web are sometimes used synonymously, but their meanings differ just enough.

Given:

A sum becomes \({2} {1 \over 2}\) in 6 years.

Calculation:

From the data,

Sum = \( {5 \over 2}\) in 6 years

In 12 years,

Sum = \( {5 \over 2}\) × \( {5 \over 2}\) = \( {25 \over 4}\)

In 18 years,

Sum = \( {5 \over 2}\) × \( {5 \over 2}\) × \( {5 \over 2}\) = \( {125 \over 8}\)

∴ The sum becomes \( {125 \over 8}\) in 18 years.

Preparing the family tree using the following symbol:

Family Tree :-

G's father is X's son.

Y is X's brother and P is G's uncle.

∴ Here, 'Y' is uncle of 'P'

Hence, the correct answer is "Uncle".

The correct answer is Prof. Jyotirmoyee Das.

Key Points

• Dr Jyotirmayee Dash and Dr Subi Jacob George have each received the Bhatnagar Puroshkar award in the field of chemical sciences.
• Dr Subi Jacob George is from the Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bengaluru.
• Dr Jyotirmayee Dash is from the Indian Association for the Cultivation of Science (IACS), Kolkata.
• At the Indian Association for the Cultivation of Science in Kolkata, Jyotirmayee Dash is a professor.

Important Points 

• Her areas of interest in research are generally chemical biology and organic chemistry.
• Jyotirmayee Dash earned her Ph.D. in synthetic organic chemistry from Ravenshaw University, Cuttack, in 2003.
• She held the titles of Marie-Curie Fellow at the University of Cambridge in the United Kingdom, Alexander von Humboldt Fellow at Freie Universität Berlin in Germany, and postdoctoral fellow at ESPCI Paris in France.
• She joined Indian Association for the Cultivation of Science in 2014 after serving as an assistant professor at the Indian Institute of Science Education and Research in Kolkata for three years.

Additional Information

• Each year, the finest achievements in science and technology are recognised with the Shanti Swarup Bhatnagar (SSB) Prize.
• Each year, SSB Prizes of Rs 5 lakh are given out for noteworthy and excellent research in either fundamental or applied fields.
• The Shanti Swarup Bhatnagar award honours excellent scientific and technological achievements in India.
• Any Indian citizen working on research in any area of science and technology who is under 45 as of December 31 of the year before the award year is eligible for this award.
• People of Indian origin (PIO) who work in India and Indian citizens living abroad are also eligible.

Given:

Time taken to travel is reduced by 20%

Concept used:

\(Speed = {Distance \over Time}\)

Calculation:

Let us consider distance as 'X' and time as 'T'

From the given data,

New time (T1) = T - 20%T

T1 = \(x = T - {20 \over 100 }T\)

New time (T1) = 0.8T

Now,

New speed (S1) = \( {X \over T1}\)

Substitute the value of T1

⇒ S1 = \( {X \over 0.8T}\)

⇒ S1 = \( {X }\over {8\over10}T\)

⇒ S1 = \( {10X }\over {8}T\)

⇒ S1 = \( {5X }\over {4}T\)

⇒ S1 = \( {5 }\over {4}\) S

⇒ Speed percentage

⇒ \( {(S1 ;- ;S) \over S} \) × 100

⇒ \( {{5\over4}S ;- ;S \over S} \) × 100

⇒ \({5S;-;4S} \over 4S\) × 100

⇒ \( {S \over 4S}\) × 100 = 25 %

∴ Train should increase the speed by 25%.

The correct answer is Karnataka.

Key Points

• Before the founding of the East India Trading Company, in 1670, coffee was first seen in India.
• On his way back from Yemen, an Indian Sufi saint by the name of Baba Budan introduced coffee beans into the nation.
• Notably to the town of **Chikmagalur, Karnataka in the south of India.**​
• Chikmagalur, where coffee was initially produced, continues to be a major producer today.

Important Points

• The state of southern India, Karnataka views coffee as one of the most crucial components of its economy.
• For the most part, Arabica beans are grown in this town, mostly in the steeper, hillier areas.
• The lower-quality Robusta beans are grown in the shallower, lower hills.
• India established a Coffee Board, a department located in the town that regulates coffee production and marketing in its district.

Additional Information

• Currently, the hilly region of Southern India accounts for a sizable share of India's coffee output.
• Karnataka makes up the majority (53%), followed by Kerala (28%), Tamil Nadu (11%), and Kerala.
• In addition to the "Seven Sister States of India" in northeastern India, which are noted for their political, social, and economic resemblances on coffee production.
• Other states in India that grow coffee include Andhra Pradesh, Orissa, Manipur, Meghalaya, Mizoram, Tripura, Nagaland, and Arunachal Pradesh.

Given,

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z.

1. The tenth letter to the left of the letter preceding the end of the above alphabet :

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

2. The eighth letter to the right of the letter which is tenth letter to the left of the last but one letter of the alphabet is :

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Hence, the correct answer is "W".

Given:

Shyam borrowed = Rs. 12,000 (Principal amount)

Shyam paid back = Rs. 15,600 (Total amount)

Rate of interest = 6%

Concept used:

Total amount = Simple Interest + Principal amount

⇒ \(SI = {PNR \over 100}\)

Calculation:

From the given data,

⇒ 15600 = SI + 12000

⇒ SI = 3600 ------ (1)

Substitute the formula of SI in equation (1)

⇒ \({PNR \over 100} \) = 3600

⇒ \({(12000)(N)(6) \over 100}\) = 3600

⇒ \({(120)(N)(6)}\) = 3600

⇒ 720N = 3600

⇒ N = \( {3600 \over 720}\)

⇒ N = 5

∴ Shyam returned the money after 5 years.

The correct answer is Krishna river.

Key Points

• In southern India, the Tungabhadra River is a sacred river.
• To get to Andhra Pradesh, it passes through the state of Karnataka.
• The Tunga River and the Bhadra River meet each other to form the Tungabhadra river.
• Thunga and the Bhadra travel 147 and 171 kilometers before they are joining at Kudali, respectively.
• At Gondimalla in Andhra Pradesh, Thungabhadra merges with the Krishna after meandering across the plains for 531 kilometres.
• It is a tributary of the Krishna river.

Additional Information

• Tunga River and the Bhadra Rivers receive input from more than 100 tributaries, streams, creeks, rivulets, and other similar water sources.
• At a height of roughly 1,196 m, it flows down the eastern Western Ghats slope in the state of Karnataka.

Given:

'M' number of men agreed to purchase an article for 'Rs. R'

4 men dropped out from the purchase.

Calculation:

Contribution of each person = \( {R \over M}\)

Contribution after 4 men dropped = \( {R \over M;-;4}\)

Now,

Required contribution = \( {R \over M;-;4 } - {R \over M}\)

⇒ \( {RM ; - ; RM; + ; 4R \over M(M;-;4)}\)

⇒ \( { 4R \over M^2;-;4M}\)

∴ Each men have to contribute \( { 4R \over M^2;-;4M}\) to purchase the article at the same price.

The correct answer is Mizoram.

Key Points

• The majority of the nation's forests are found in Madhya Pradesh.
• It is followed by Arunachal Pradesh, Chhattisgarh, Odisha, and Maharashtra.
• The top five States in terms of forest cover as a percentage of total land area.
• They are Mizoram, Arunachal Pradesh, Meghalaya, Manipur, and Nagaland.
• The term "forest area" refers to the land's legal status according to government records.
• The term "forest cover" refers to the presence of trees on any given piece of land.

Additional Information

• The India State of Forest Report-2021 was published by the Union Ministry of Environment, Forests and Climate Change (MoEFCC).
• The Forest Survey of India publishes a report on India's forest and tree cover every two years.
• The first survey, ISFR 2021, was released in 1987, making it the 17^th.
• India is one of the few nations in the world to conduct this type of poll every two years.
• It is usually regarded as thorough and reliable.
• The forestry, agroforestry, and forest management sectors all use the ISFR for planning and policy-making.

The arrangement of the given words in the alphabetical order in which they appear in an English dictionary is as shown below :

1. Abandon
2. Accumulate
3. Achieve
4. Acquit
5. Actuate

∴ Here, the word which is last is 'Actuate'.

Hence, the correct answer is "Actuate".

The correct answer is Satish Chandra Samanta.

Key Points

• The Tamralipta Jatiya Sarkar, also known as the Tamluk National Administration, was a separate parallel government.
• It was created in the present-day Indian state of West Bengal's Tamluk and Contai subdivisions.
• Satish Chandra Samanta, the Director General of the National Government in Tamluk until his arrest in June 1943, established this national administration.
• He started it with the help of various ministries and leaders, including Sushil Kumar Dhara, Ajoy Mukherjee, and Matangini Hazra.

Additional Information

• During the Quit India Movement(1942-1944), it was operated.
• This was the first people's government.
• In the midst of cries of "British, Leave India!" it was founded in British India.
• During the British Raj, it had the distinction of being the only parallel government to function autonomously for two years.

The correct answer is -Brain.

Key Points

• Blood does not clot because RBCs contain oxygen.
• There are several reasons why blood does not clot when present in the circulatory system
• Heparin prevents blood from clotting in arteries.
• The cells that line the inside of blood arteries have a smooth surface. Blood begins to clot in contact with a rough surface. Therefore, this prohibits that.
• Endothelium's glycocalyx layer repels clotting agents and platelets, preventing clotting.
• Anticoagulant thrombomodulin is a protein that binds to and inactivates clotting factors V and VIII.
• Blood clot without any injury
• A blood clot may develop in an artery or vein without injury.
• These clots are harmful because they may obstruct blood flow.
• They are particularly harmful if fragments reach the brain or lungs.
• Blood-brain barrier
• The blood-brain barrier is a selective membrane formed of endothelial cells of the capillary wall that prevents any solute from passing through.
• The comparatively smooth and very flexible capillary walls prevent the formation of clots.
• Even though a blood clot is migrating, it is not permitted to cross the blood-brain barrier.

The logic followed here is :-

Second number = (First number ÷ Third number) × 2

1) 

= (72 ÷ 6) × 2

= 12 × 2

= 24

And

2) 

= (96 ÷ 12) × 2

= 8 × 2

= 16

Similarly,

3) 

= (108 ÷ 18) × 2

= 6 × 2

= 12

Hence, the correct answer is "12".

The correct answer is Lord Cornwallis.

Key Points

• Under Lord Cornwallis, each Police Station in British India started functioning under the Sub Inspector of Police.

major reforms in the Police are

• The Zamindars previously controlled the Police.
• It was taken from the Zamindars and given to the District Superintendent of Police.
• The Police were made more European.
• They were now being paid a wage and had the unrestricted authority to detain the suspects.
• To uphold "peace and order," Thanas were in India.

Additional Information

• Thanas were still greatly influenced by zamindars, but they were legally independent of the police functionary.
• "Anyone who is found linked with Slavery would be tried in the Supreme Court," declared Lord Cornwallis in 1789.
• He had taken this action to combat the scourge of slavery that had been rife in India since the Sultanate Era.
• The children's collection and sale to "French" was the immediate cause.

Given:

Ratio of principal and simple interest is

P : SI = 5 : 2

Concept used:

⇒ \(SI = {PNR \over 100}\)

Calculation:

From the given data,

Let,

⇒ SI = 2x

⇒ P = 5x

Substitute the values in the formula

⇒ \(SI = {PNR \over 100}\)

⇒ \(2x = {(5x)(N)(4) \over 100}\)

⇒ \(200x = {(20x)(N)}\)

⇒ \({200x \over 20x} = N\)

⇒ \(N = 10\)

∴ Number of years for which principal deposited was 10 years.

The correct answer is Maharashtra.

Key Points

• Indian nuclear policy was conceived by Dr. Homi Jehangir Bhabha.
• In 1945, Dr Bhabha founded the Tata Institute of Fundamental Research (TIFR) to do research in nuclear science.
• Dr Bhabha founded the Atomic Energy Establishment, Trombay (AEET) in Mumbai, Maharashtra in January 1954 to step up efforts to harness nuclear energy for the good of the country.
• Required India's ambitious nuclear programme, it was a multidisciplinary research programme.
• AEET was renamed Bhabha Atomic Research Centre(BARC) after the tragic passing of Bhabha in 1966.

Additional Information

• In order to meet the developing program's manpower requirements for atomic energy research and development, Dr Bhabha founded the BARC Training School.
• In all areas of nuclear research and engineering, Dr Bhabha promoted independence.
• BARC is the originator of research and development organisations like the Indira Gandhi Center for Atomic Research (IGCAR) Kalpakkam, the Raja Ramanna Center for Advanced Technology (RRCAT), the Variable Energy Cyclotron Center (VECC), etc.,
• That conducts groundbreaking research on nuclear and accelerator technologies, as well as industrial organisations like the Nuclear Power Corporation of India Limited (NPCIL), the Nuclear Fuel Complex (NFC), the Electronics Corporation of India Limited (ECIL), etc.

The correct answer is Dev Anand.

Key Points

• Dev Anand, a well-known Bollywood actor, wrote the first-ever comprehensive memoir titled Romancing with Life.
• It portrays his extraordinary life story in a way that only he can.
• Here are some stories from Dev's youth in Gurdaspur and Lahore in the 1930s.
• His years of adversity in Bombay throughout the 1940s.
• His ill-fated relationship with Suraiya and friendship with Guru Dutt.
• His union with Kalpana Kartik, a co-star.
• His relationships with his brothers Chetan and Vijay Anand, and with S. D. and R. D. Burman.
• Hiss fellow countrymen Dilip Kumar and Raj Kapoor, to both of whom he was very close, and with his heroines, from Geeta Bali to Madhubala to Mumtaz to Waheeda Rehman to Zeenat Aman to Tina Munim, all of whom he launched.

Given series is :

5 9 3 2 1 7 4 2 6 9 7 4 6 1 3 2 8 7 4 1 3 8 3 2 5 6 7 4 3 9 5 8 2 0 1 8 7 4 6 3

The 4's are there preceded by 7 but not followed by 3 is : 

5 9 3 2 1 7 4 2 6 9 7 4 6 1 3 2 8 7 4 1 3 8 3 2 5 6 7 4 3 9 5 8 2 0 1 8 7 4 6 3

∴ Here, the 4's are there preceded by 7 but not followed by 3 are 'four'.

Hence, the correct answer is "Four".

The correct answer is Phishing.

Key PointsPhishing

• Cyber Fraudsters create a phishing website that appears to be a legitimate website, such as a bank's website, an e-commerce etc
• It distributes links to these websites by SMS, social media, email, and Instant Messenger, among other methods.
• They will get security credentials such as a Personal Identification Number (PIN), One Time Password (OTP), Password, and so on, which are collected and utilised.

Stalking

• Cyberstalking is a sort of cybercrime in which a victim is stalked or harassed online.
• It can be viewed as a progression from both in-person stalking and online bullying.
• Using a duplicate application to collect user passwords is called Stalking.
• However, it often appears in the form of continuous, purposeful, and methodical text messages, emails, social media posts, and other forms of communication.
• Sometimes encounters that seem innocent at first turn into bothersome or frightening systematic cyberstalking.
• Even though some people find the initial stage of cyberstalking amusing and harmless.
• It ceases to be entertaining when the interactions continue even after the target has indicated their annoyance and requested that they stopped.

The logic followed here is :-

Third number = First number + Second number + Second number.

• 1 + 4 = 9 → 1 + 4 + 4 = 9
• 2 + 8 = 18 → 2 + 8 + 8 = 18
• 3 + 6 = 15 → 3 + 6 + 6 = 15
• 7 + 8 = ? → 7 + 8 + 8 = 23

Hence, the correct answer is "23".

The correct answer is Kandala.

Key Points

• First Free Trade Zone (FTZ) in India – Kandla Port, now known as Deendayal Port, was the first in India to be designated as a Free Trade Zone, promoting duty-free trade and economic activities.
• Tax-Free Seaport – Businesses operating within the FTZ at Kandla enjoy exemptions on customs duties, excise, and other taxes, making it a crucial hub for import-export trade.
• Strategic Trade Location – Situated on the Gulf of Kutch, Gujarat, Kandla Port has excellent connectivity to major international trade routes, handling diverse cargo efficiently.
• Boost to International Trade – By offering tax benefits and trade incentives, Kandla Port has significantly contributed to India's foreign trade, industrial growth, and economic development.

Additional Information

• Mumbai Port has long served as the main entry point into India.
• It has been crucial to the growth of the country's economy, trade, and commerce, as well as the wealth of Mumbai city in particular.
• The port has come to this position by working hard to meet the shifting demands of marine traffic.
• Although originally built to handle general cargo.
• The port has evolved over time to accommodate shifting shipping practices and cargo packaging, including break bulk, unitization, palletization, and containerization.

The correct answer is Mathura Refinery.

Key Points

• At its Mathura refinery, India's largest oil company, Indian Oil Corporation (IOC), will construct the country's first "green hydrogen" plant.
• It aspires to get ready for a future that meets the rising demand for oil as well as renewable energy sources.
• The strategic growth plan that the Indian Oil Corporation (IOC) has created aims to keep a laser-like focus on its core fuel marketing and refining activities.
• Over the next ten years, it will also be making greater strides in petrochemicals, hydrogen, and electric transportation.

Important Points

• At any of its upcoming petrochemical and refinery growth projects, the business will not install captive power plants.
• It uses the 250 MW of electricity that renewable energy sources like solar energy produce.

Given:

\( {3 \over 10}^{th}\) of the road is 45 km

Calculation:

Let us consider the length of the road as 150 km.

So,

⇒ \( {3 \over 10}\) × 150 = 45

Then,

⇒ \( {2 \over 5}\) × 150 = 60

∴ The length of the \( {2 \over 5} ^{th}\) of that road is 60 km.

The correct answer is Damascus.

Key Points

• Syria's capital, Damascus, is the oldest capital in existence.
• It is the fourth holiest city in Islam, according to some.
• Damascus was established in the third millennium B.C., making it one of the Middle East's oldest cities.
• Archaeologists have been able to demonstrate through excavation sites that the region was first populated between 8,000 and 10,000 B.C.
• The city is special because so many different civilizations have contributed to its current form.

Important Points

• Urban planning practices from Roman and Greek cities are incorporated here.
• Islam has had a significant impact as well, as may be seen at the Umayyad Mosque.
• It was constructed between A.D. 705 and 715 and is also referred to as the Great Mosque.
• It is one of the biggest and oldest mosques in the world.

The logic followed here is :-

Hence, the correct answer is "ISS".

Explanation:

= (√20 + √1125 - √567) ( √500 + √245 + 9√7)

= ( 2√5 + 15√5 - 9√7 ) ( 10√5 + 7√5 + 9√7)

= (17√5 - 9√7) (17√5 + 9√7)

= (17² × 5 – 9² ×7)

= 1445 – 567

= 878

Ans- 878

Given :- _a_bca_dabba_bac_c_a

By checking options and substituting accordingly.

1) acbdba → a a c b c a b d a b - b a d b a c b c a a

• Here "a a c b c a b d a b" is reversed

2) adcdba → a a d b c a c d a b - b a d b a c b c a a

3) acbdab → a a c b c a b d a b - b a d b a c a c b a

4) acdbba → a a c b c a d d a b - b a b b a c b c a a

Hence, the correct answer is "acbdba".

Given:

A = Rs. 2250

B = Rs. 2700

Ratio = 2 : 1

Calculation:

Let the time B joined the business be 'x'

Let us consider the total months as 12.

⇒ A : B = (2250 × 12) : (2700 × x)

⇒ A : B = 27000 : 2700x

We know that,

⇒ A : B = 2 : 1 ----- (1)

Substitute the value of A : B in equation (1)

⇒ 27000 : 2700x = 2 : 1

⇒ \({27000 \over 2700x} = {2 \over 1}\)

⇒ 27000 = 2 × 2700x

⇒ 27000 = 5400x

⇒ x = 5

So, B remained in business for 5 months.

Then,

B = 12 months - 5 months = 7 months

∴ B joined the business after 7 months.

The correct answer is Methane Hydrate.

Key Points

• Fire Ice is a fossil fuel.
• Its chemical name is methane clathrate, also known as methane hydrate.
• It is a solid compound and is formed by trapping methane in the crystal structure of water.
• Methane hydrates are white ice-like solids.

Additional Information

• Methane hydrates are formed when methane gas comes in contact with water at high pressure and low temperature.
• These occur naturally in subsurface deposits of river basins and oceans.
• These deposits often include small amounts of other hydrocarbon hydrates like ethane hydrate and propane hydrate.
• Methane hydrates are used for the transportation and storage of natural gas.
• They are not used on a large scale because they are difficult to handle.
• Leakage of methane gas can cause serious consequences.

The correct answer is Damodar Valley.

Key Points

• Gondwana-era coal makes up over 98% of all reserves in India, which is present in Damodar valley.
• It took around 250 million years for this coal to develop.
• When it comes to coal production and reserves, Jharkhand tops the list.
• Almost exactly along 24 degrees north latitude from the Gondwana era, a narrow strip containing the majority of Jharkhand's coal fields runs in an east-west orientation.
• Auranga, Bokaro, Dhanbad, Jharia, Giridh, Karanpur, Ramgarh, and Hutar are the state's primary coal mining hubs.

Additional Information

• ​India's primary energy source is coal.
• which accounts for over 67% of all commercial energy used in the nation.
• This fossil fuel also referred to as "Black Gold," is found in sedimentary strata.
• It is made of wood that contains biological material.
• The heat from below and pressure from above cause wood to burn and disintegrate when huge areas of forests are covered by sediments.
• It takes centuries for the phenomenon to produce coal.

According to given information:

Given Word : CASTRAPHONE

Forward pair : ST

Backward pair : NO, NT, OT, HE, PR

∴ Here, the number of pairs are '6'.

Hence, the correct answer is "6".

The correct answer is Satyendra Nath Bose.

Key Points

• Satyendra Nath Bose was awarded the Padma Vibhushan award C. Rajagopalachari, Sarvepalli Radhakrishnan and C. V. Raman were awarded the Bharat Ratna award.
• Satyanedranath Bose along with Meghnad Saha graduated from Presidency College Calcutta.
• Rabindranath Tagore dedicated his book on science, “Visva-Parichay”, to Satyendra Nath Bose in 1937.
• Satyanedranath Bose was honoured with the title Padma Vibhushan in 1954.
• Bose-Einstein condensate (BEC) is called the fifth state of matter named after him.
• It is formed when a gas of bosons having low densities is cooled to temperatures close to absolute zero.

Additional Information 

• Padma Vibhushan is the second-highest civilian award in India which is for those who are doing outstanding service without distinction of race, occupation and position.
• Bharat Ratna is the highest civilian award in India which is for those who are doing outstanding service without distinction of race, occupation and position.

Six friends, namely, A, B, C, D, E, F are sitting on a bench.

1) If C is sitting just left to A and A and B are sitting in the furthest corner.

2) E and F are sitting in the middle.

∴ Here, 'D' is sitting just to right of 'B'.

Hence, the correct answer is "D".

The correct answer is P.V. Sindhu.

Key Points

• The first Indian woman to win two Olympic medals was PV Sindhu.
• The great badminton player won a bronze medal at the Olympics in Tokyo after taking home a silver in the previous games in Rio.
• After defeating the world No. 9 in straight games, Sindhu earned bronze.
• In two games, 21-13 and 21-15, Sindhu prevailed in the match.
• The only other Indian with two Olympic medals is the wrestler Sushil Kumar.

Important Points

• The legendary shuttler currently holds the joint-most medals for a female singles player with seven from the World Championships and Olympics.
• Sindhu has two Olympic medals in addition to one gold, two silvers, and two bronzes from the World Championships.

Additional Information

• One of India's most accomplished sports person is P.V. Sindhu.
• At a number of competitions, including the Olympics and the BWF circuit, Sindhu has received medals.
• A gold medal from the 2019 World Championships is included in her list of medals.
• She is only the second individual athlete from India to win two straight medals at the Olympic Games.
• The first and only Indian to win the title of badminton world champion.
• In April 2017, she attained a career-high global ranking of no. 2.

The logic followed here is :-

1) Mohini is taller than Nita but not shorter than Sarita.

2) Sarita and Malini are of the same height and Mohini is shorter than Hema.

∴ Here, 'Mohini' is second tallest among them.

Hence, the correct answer is "Mohini".

Given:

Wheat : Paddy = 2 : 3

Family consumed = 5 : 4

Concept used:

Expenditure of commodity = Consumption of commodity × Rate of commodity

Calculation:

From the given data,

Expenditure of wheat = 2 × 5 = 10

Expenditure of paddy = 3 × 4 = 12

So,

Ratio of expenditure = Expenditure on wheat : Expenditure on paddy

Ratio of expenditure = 10 : 12 = 5 : 6

∴ The ratio of expenditure on wheat and paddy is 5 : 6.

The water image of the given figure is as shown below :

Detailed Explanation:

• The line BA is water image.
• The word "NUCLEAR" has first letters 'N'. So, the water image should be

⇒ Option 2 is eliminated.

• The word "NUCLEAR" has second letter "U". So, the water image should be

⇒ Option 1 is eliminated.

• The word "NUCLEAR" has fourth letter "L". So, the water image will be

⇒ Option 4 is eliminated.

Hence, the correct answer is "Option 3".

Given:

Father is three times as old as son

Calculation:

Let,

The age of son = x

The age of father = 3x

After 12 years,

The age of son = x + 12

The age of father = 3x + 12

From the given data we know that, father's age is twice as son after 12 years

Then,

⇒ 2 (x + 12) = 3x + 12 

⇒ 2x + 24 = 3x + 12

⇒ 24 - 12 = 3x - 2x

⇒ 12 = x

We know that, we have considered the age of son as x

⇒ Age of son = 12.

∴ The present age of son is 12 years.

The correct answer is Siraj Ud Daulla.

Key Points

• Calcutta was renamed Alinagar by Siraj-ud-Daulah.
• Robert Clive and Siraj-ud-Daulah signed the Treaty of Alinagar on February 9^th, 1757.
• The Nawab gave Calcutta the short-lived name of Alinagar after he had taken it over in the war.
• Although the Nawab had taken control of the English fort in Calcutta.
• He signed the pact in response to the English military might and the threat posed by Afghans in the back.

Additional Information

• Siraj-ud-Daulah or Siraj ud-Daula is another name for Mirza Muhammad Siraj-ud-Daulah.
• He was Bengal's final independent Nawab.
• The East India Company began to rule over Bengal at the end of his reign.
• Eventually nearly the entire Indian subcontinent went under British.

Explanation:

Lets take fourth number as x

Then 1 / 3, 1 / 6, 1 / 9, x

a / b = c / d

1 / 3 ÷ 1 / 6 = 1/ 9 ÷ x

 1 / 3 : 1 / 6 :: 1 / 9 : x

1 / 3 × x = 1 / 6 × 1 / 9

x = 1 / 18

Ans: 1 / 18

The Correct answer is Indus.

Key Points

INDUS RIVER 

• The river Indus rises in Tibet, near Lake Mansarovar.
• Flowing west, it enters India in the Leh.
• Several tributaries, the Zaskar, the Nubra, the Shyok and the Hunza, join it in the Kashmir region.
• The Indus flows through Baltistan and Gilgit and emerges from the mountains at Attock.
• The Satluj, the Beas, the Ravi, the Chenab and the Jhelum join together to enter the Indus near Mithankot in Pakistan
• Finally, the Indus river drains into the Arabian Sea.
• Ancient Name: Sindhu.
• The Indus Water Treaty was signed between India and Pakistan on 19 September 1960.
• The total length of the Indus River is 3180 km.

Additional InformationGanges

• The Ganges River, also called Ganga, is a river located in northern India that flows toward the border with Bangladesh.
• It is the longest river in India and flows for around 1,569 miles (2,525km) from the Himalayan Mountains to the Bay of Bengal.
• The Ganga enters the plains at Haridwar.
• From here, it flows first to the south, then to the southeast and east before splitting into two distributaries, namely the Bhagirathi and the Hugli.
• The river has a length of 2,525 km.
• It is shared by Uttaranchal (110 km) and Uttar Pradesh (1,450 km), Bihar (445 km) and West Bengal (520 km), and Sahibganj town of Jharkhand is located on the bank of River Ganges.

Brahmaputra(2,880kms): 

• The Brahmaputra river rises from the Chemayundung glacier of the Kailash range near the Mansarovar Lake to the north of the Himalayas in the southwest Tibet region.
• The Brahmaputra river is an international river and its river basin is spread over four countries Bhutan, Tibet, India, and Bangladesh.
• Out of the total length of the Brahmaputra of 2,880 km, 1,625 km is in Tibet flowing as the Yarlung Tsangpo, 918 km is in India known as Siang, Dihang and Brahmaputra and the rest 337 km in Bangladesh has the name Jamuna till it merges into the Padma near Goalando.
• Lohit, Dibang, Kameng, Manas, and Teesta are the few important tributaries of the river Brahmaputra.

Godavari(1,450kms):

• The river Godavari is the largest of the peninsular rivers of India.
• It flows through the states of Maharashtra, Telangana, Andhra Pradesh, Chhattisgarh, and Odisha, ultimately emptying into the Bay of Bengal.
• The Godavari is the second largest river in India after the river Ganga.

Given:

A can complete the work in 10 days.

B can complete the work in 15 days.

Explanation:

If A worked for 4 days, then completed work will be 4 × 3 = 12

If B worked for 5 days, then completed work will be 5 × 2 = 10

Completed work by  A and B is 22.

Then, the remaining work will be 8.

If C took 8 days to complete the remaining work, then the efficiency of C will be 1.

Time to complete the whole work by A, B, and C will be,

= 30 ÷ (3 + 2 + 1)

= 30 ÷ 6

= 5

∴Time taken by A, B, and C to complete the work together is 5 days.

We know that: 

In an ordinary year, there are 365 days and on dividing 365 by 7,

• We get remainder = 1 so this extra one day is taken as odd day.

Similarly, in an leap year, there are 366 days and on dividing 366 by 7,

• we get remainder = 2 so this extra two days is taken as odd days.

Thus, the remainder, which we get after dividing the number of days by 7 is considered as odd days.

Given 27^th September in a year is Saturday.

• Number of remaining days in September = 3 days
• Number of days in October = 27 days.

∴ The total number of days = 3 + 27

∴ The total number of days = 30

⇒ The number of odd days from 27^th September in a year to 27^th October in the same year = 30 ÷ 7 = 2 odd days

∴ 27^th September in a year, it was Saturday + 2 odd days = Monday.

Hence, the correct answer is "Monday".

The Correct answer is 1987.

Key Points

• Sundarbans was declared a world heritage site in 1987 by UNESCO.
• The Sundarbans mangrove forest, one of the largest such forests in the world (140,000 ha), lies on the delta of the Ganges, Brahmaputra, and Meghna rivers on the Bay of Bengal.
• The site is intersected by a complex network of tidal waterways, mudflats, and small islands of salt-tolerant mangrove forests.

Additional Information 

• List of World Heritage Sites in West Bengal:

• It is a mangrove area in the delta formed by the confluence of the Ganges, Brahmaputra, and Meghna Rivers in the Bay of Bengal.
• It spans from the Hooghly River in India’s state of West Bengal to the Baleswar River in Bangladesh.
• Indian Sundarbans constitute over 60% of India’s total mangrove forest area.
• It is the 27^th Ramsar Site in India.
• It is the largest protected wetland in the country.

The correct answer is Pali.

Key Points

• The Tripitaka is the name of Buddhism's holiest book.
• It is also known as the Pali Canon, after the language in which it was originally written.
• It is written in Pali.
• It is an ancient Indian language that is remarkably similar to the language that the Buddha himself spoke.

Additional Information

• Buddhist writings are those exacting writings that are crucial for practising Buddhism.
• The primary Buddhist literature was initially transmitted orally by Buddhist monks.
• They were later written down and composed in a variety of Indo-Aryan languages.
• Those were compiled into several Buddhist ordinances.
• As Buddhism spread outside of India, these were later transformed into various languages.
• Such as Buddhist Chinese and Classical Tibetan.

Given:

500 men have provision for 24 days.

Explanation:

If 500 men have provision for 24 days,

Then, 1 person has the same provision for = 24 × 500 days

So 800 men will have the same provision for = ( 24 × 500 ) ÷ 800

= 15 days

∴ 800 men can have the provision for 15 days.

The correct answer is Table Tennis.

Key Points

• Indian table tennis player Mouma Das.
• She was raised in Kolkata, West Bengal, where she was born.
• At the Commonwealth Games, Das garnered numerous medals, including a gold in the Women's Team Competition in 2018.
• She received the Arjuna Award in 2013, India's second-highest sporting honour.
• Since the early 2000s, she has represented India in international gatherings.

Additional Information

• Das competed in the women's singles table tennis at the 2004 Olympic Games.
• In 2016, she competed in the event for the second time in the Olympics games.
• In the women's doubles competition at the 2017 World Table Tennis Championships, Das advanced to the quarterfinals.
• At the 2018 Commonwealth Games, the team that included Manika Batra also took home the silver medal.
• In 2021, she received the Padma Shri, the fourth-highest civilian honour in India.

The correct answer is Israel.

Key Points

• The Israeli business NSO Group created the Pegasus Spyware.
• Additionally, the malware is currently in the news for the purported surveillance of specific people.
• These individuals include people like journalists, legislators, businesspeople, and others.
• According to reports, spyware is being used by the Indian government to access the phones of these individuals.

Additional Information

• The main purpose of the spyware Pegasus is to break into various mobile devices.
• The spyware first came to light in 2016.
• In 2016, it attempted to hack into the phone of UAE human rights activist Ahmed Mansoor.
• Although the attempt was unsuccessful, people have been wary of spyware ever since.

Given:

The average of 3 numbers is 80.

The first number is 10 more than twice the second.

The second number is 10 less than thrice the third.

Explanation:

Let's take the first number as a

Second number as b

Third number as c

Then, a = 2b + 10 ---------1

b = 3c – 10

Then c = ( b + 10 )÷ 3 -------------2

The total of three numbers = 80 × 3

= 240

a + b + c = 240

2b + 10 + b + (b + 10)/ 3 = 240 (by combining 1 and 2)

6b + 30 + 3b + b + 10 = 720

10b = 680

b = 68

If b is 68, then  a = 2 × 68 + 10

= 146

If a + b + c = 240

146 + 68 + c = 240

C = 26

∴ The smallest number among the given three numbers is 26.

The correct answer is Bhagirathi.

Key Points

• The fourth-highest dam in the world and the highest in India is Tehri Dam.
• It measures about 592 meters long by 260.5 meters high.
• It is a component of the Tehri Dam & Hydro Power Project (the multipurpose river valley project) that is being built on the Bhagirathi River.
• It is to take use of its enormous potential for irrigation and hydroelectricity.
• In Uttarakhand's Tehri district, specifically. An earth and rock fill dam is the Tehri dam.

Important Points 

• Four shaft spillways and a chute spillway system with three radial gates make up the spillway system.
• It is built to withstand a drop of 220 meters and a PMF of 15540 cumecs.
• The gross storage capacity of the reservoir is 3540 MCM, while the effective storage capacity is 2615 MCM.

Additional Information

• Bhagirathi is the main river stream that originates in the Garhwal Himalaya (300 55’ N, 7907’ E).
• The river cuts its path through the Himalayas and flows a distance of about 205 Kilometers from Gaumukh and transverses through two districts of Uttarakhand state i.e. Uttarkashi.
• Tehri to reach Devprayg where another headstream, the Alaknanda, joins it to form Holy Ganga.

Given:

The length of the hall is 5 mt more than the breadth of the hall.

Explanation:

Let's take breadth as x

The length will be x + 5

Area of rectangle = length × breadth

84 = (x+5) × x

x² + 5x – 84 = 0

x = -12 or x = 7

The length of any object will be in positive integers so x = 7

If the breadth is 7, then the length is 12.

∴The length and breadth of the hall are 12 mt and 7 mt respectively.

Explanation:

The cost price of the first saree, where the seller made a profit of 20%, can be calculated as:

Selling Price / (1 + Profit%) = 400 / (1 + 20/100) = Rs. 333.33

The cost price of the second saree, where the seller made a loss of 20%, can be calculated as:

Selling Price / (1 - Loss%) = 400 / (1 - 20/100) = Rs. 500

So, the total cost price for the two sarees is Rs. 833.33.

The total selling price for the two sarees is Rs. 800 (since each saree was sold for Rs. 400).

The overall loss is the difference between the total cost price and the total selling price, which is Rs. 33.33.

The loss percentage can be calculated as:

(Loss / Total Cost Price) * 100 = (33.33 / 833.33) * 100 ≈ 4%

So, the seller made an overall loss of about 4%.

The correct answer is Russia.

Key Points

• INDRA 2021 is the 12^th iteration of the joint Indo-Russian military exercise.
• It will take place in Volgograd, Russia, from August 1 to August 13, 2021.
• The exercise will involve a joint force conducting counterterrorism operations against global terror organisations in accordance with a United Nations mandate.
• The drill will involve 250 people from both countries.

Additional Information

• In order to perfect its drills for participation in the joint exercise, the Indian Army contingent, which was made up of a Mechanized Infantry Battalion,
• underwent intensive training at several places throughout India.
• The Indian and Russian Armies will be able to share best practices during Exercise INDRA-21.
• It will further build their mutual trust and interoperability.

Explanation:

13, 25, 37, 49, __

13 + 12 = 25

25 + 12 = 37

37 + 12 = 49

49 + 12 = 61

Ans- 61

The correct answer is Sardar Vallabhbhai Patel.

Key Points

• Sardar Vallabhbhai Patel is honoured by having his name on the National Police Academy in Hyderabad.
• Officers of the Indian Police Service who have been chosen through an All India-based Civil Services Examination are trained at the Sardar Vallabhbhai Patel National Police Academy (SVPNPA).
• The trained officers will be assigned to states as Assistant Superintendents of Police (ASP).
• Then they will supervise the other sub-ranks of police personnel.
• It is at the discretion of each state's Director General of Police to hire sub-ranks like Constables, Sub-Inspectors, and Deputy Superintendents of Police.

Important Points

• The Home Ministry of the Indian Government controls the IPS cadre.
• The officer of this service can only be appointed or removed by an order from the President of India.
• The Academy's main goal is to develop leaders for the Indian Police who will take charge of the organisation with courage, integrity, commitment, and a strong sense of duty to the populace.
• The academy will make an effort to insist on the morals and values that will enable them to better serve the populace.
• It will specifically work to insist on the highest levels of integrity, sensitivity to people's aspirations in a rapidly changing social and economic environment, respect for human rights, a broad liberal view of law and justice, a high standard of professionalism, physical fitness, and mental alertness.

Given:

In a mixture of Dettol and water, the water is 80%.

Explanation:

Initial Dettol to water ratio: 1 : 4

Final Dettol to water ratio: 1 : 3

There is no change in water.

So need to equate the water in both the ratios

Then, the ratios will be-

Initial Dettol to water ratio: 3 : 12

Final Dettol to water ratio: 4 : 12

Change in Dettol is 1 part.

The total initial volume is 15 parts = 60 ltr

1 part = 4 liter

So, the Change in Dettol is 1 × 4 liter

= 4 liter

∴Dettol added to the mixture is 4 liters.

The correct answer is National Highway 44.

Key Points

• NH-44
• NH-44 is the longest national highway in India with a length of 3745 Kilometers running from Srinagar in the north to Kanyakumari in the south.
• This highway connects 11 states and about 30 important cities.
• It was previously known as NH 44.
• It came into being by merging seven national highways in full or part NH1, NH 1A, NH 2, NH 3, NH 75, NH 26, NH75.

Additional Information

• The shortest national highway in India is NH 47A  which connects Kundanoor Junction of Maradu in Kochi City to the Kochi port at Willingdon Island.
• NH-2
• NH-2 was a major National Highway in India, that connected the states of Delhi, Haryana, Uttar Pradesh, Bihar, Jharkhand, and West Bengal.
• It constitutes a major portion of the historical Grand Trunk Road along with old NH 91 and old NH1 in India.
• The road was the part of National Highway network of India, and it is officially listed as running over 1,465 km.
• NH-4
• NH-4 was a major National Highway before the National Highway renumbering in Western and Southern India.
• NH-4 linked four of the 10 most populous Indian cities- Mumbai, Pune, Bangalore, and Chennai.
• NH-4 was 1,235 km in length and passed through the states of Maharashtra, Karnataka, and Tamil Nadu.
• NH-6
• NH-6 was a National Highway in India that has been separately designated under the new national highway numbering system.
• It was officially listed as running over 1,949 km from Surat to Kolkata.
• The route was also known as Asian Highway 46.

The correct answer is Directive Principles of State Policy.

Key Points

• The federal and state governments must adhere to the Directive Principles of State Policy while formulating laws and regulations.
• The directive principles define precise economic and social policies that India's next governments must adhere to.
• In accordance with the Directive Principles of State Policy, the State shall endeavour to further the welfare of the people,
• The welfare of the state by constructing and effectively preserving a social order in which social, economic, and political justice shall prevail in all institutions of national life.

Important Points

• Fundamental Rights, Directive Principles of State Policy, and Fundamental Duties are all covered under the Indian Constitution.
• A form of government known as a "welfare state" is one in which the government actively protects and advances the economic and social well-being of its people.
• It offers a social safety net that may cover things like healthcare, housing, food, and education.
• The welfare of the disadvantaged and marginalized groups in society cannot be guaranteed without ensuring equality of opportunity and fair distribution of wealth.

Additional Information

• The Constitution of India is the top law of the land.
• The constitution creates a framework that outlines the core political code, organisational structure, operational procedures, powers, and duties of governmental institutions, as well as the fundamental rights, guiding principles, and obligations of the general populace.

The logic followed here is :-

In the alphabetic positional value consonants are represented as same letters.

In a given word Vowels are represented as in Vowel order.

ACID is written as 1C3D.

And

PAMPER is written as P1MP2R.

Similarly,

BOMBAY will be written as :

Hence, the correct answer is "B4MB1Y".

The correct answer is Kaji Nazrul Islam.

Key Points

• Kazi Nazrul Islam was a Bengali poet, musician, activist, and philosopher.
• His innovative Bengali poetry is what is most renowned about him.
• He is also referred to as the Rebel Poet or Bidrohi Kobi.
• As seen in several of his writings, he fiercely rebelled against the dehumanisation of mankind through slavery, prejudice, and custom.
• He is honoured in India as the national poet of Bangladesh, according to official recognition.
• A biweekly Bangla newspaper called Dhumketu is edited by Kazi Nazir Islam.
• His pen name was Dhumketu.
• The newspaper served as the voice of radicals in the modern era.

Additional Information

• He is credited by academics with initiating Bengal's Muslim community's cultural revival.
• He was responsible for "liberating" Bengali literature and poetry from its medieval influence.
• Kazi Nazrul Islam assisted in establishing a new interaction between his people and modern life by building a bridge between traditional Islam and modern sensibility.
• Nazrul became a respected journalist in Kolkata (then Calcutta).
• Through his lyrical works, such as "Bidrohi" ("The Rebel") and "Bhangar Gaan" ("The Song of Destruction") as well as his periodical "Dhumketu,"("The Comet") he denounced the British Raj and encouraged revolution.
• Nazrul composed "Rajbandir Jabanbandi" ("Deposition of a Political Prisoner") when he was incarcerated, sharpening his condemnation of imperialism.
• Nazrul examined the lives of India's oppressed masses while denouncing religious fanaticism among Muslims.
• He stayed involved in political campaigns as well as literary, artistic, and musical organisations.

The correct answer is South America.

Key Points

• There are many names for grasslands.
• They go by the name "prairies" in the Midwest of the United States.
• They are referred to as pampas in South America.
• African grasslands are referred to as savannas, while the grasslands of central Eurasia are known as steppes.
• They all have grasses as their primary vegetation type by nature.
• Grasslands are found in areas with regular rainfall that is insufficient to sustain the development of forests but not insufficient enough to result in desertification.

Important Points

• The Pampas, also known as the Pampa and Spanish La Pampa, are large plains in central Argentina that stretch westward from the Atlantic coast to the Andean foothills and are bordered by Patagonia (north) and the Gran Chaco (south).
• The word for "flat surface" in Quechua is where the name originates.
• The Pampas gradually descend in a northwest-to-southeast direction.
• The majority of the area looks to be totally flat, with the exception of a few sierras in the northwest and south.
• The term "Pampas" is also used to describe a number of smaller plains in other parts of South America, including the desert in northern Chile.

Additional Information

• In actuality, meadows frequently exist between deserts and woods.
• Grasslands make up between 20 and 40 per cent of the world's geographical area, depending on how they are characterised.
• Except for Antarctica, they are found on all continents and are often open and flat, making them susceptible to pressure from human populations.
• Agriculture, overgrazing, invasive species, illegal hunting, climate change, and overgrazing are some of the threats to natural grasslands and the fauna that inhabits them.

The correct answer is Deepika Padukone.

Key Points

• Deepika Padukone, a well-known Bollywood star, was presented with the Crystal Award during the World Economic Forum's 50^th Annual Meeting in Davos, Switzerland.
• She received the honour in appreciation of her work raising awareness of the value of mental health.
• The actor received the honour from Hilde Schwab, co-founder, and chairwoman of the World Arts Forum of the World Economic Forum.
• The "Live Love Laugh" charity, run by Deepika Padukone, promotes awareness campaigns in Indian schools.
• Additionally, it provides funding for free medical education and mental health services.

Additional Information

• Deepika Padukone, artist Theaster Gates, choreographer Jin Xing, and artist Lynette Wallworth are among the Crystal Awards 2020 recipients.
• Hilde Schwab, the chairwoman and co-founder of the Schwab Foundation for Social Entrepreneurship, gave out the awards. The Crystal Awards are given to outstanding artists in recognition of their enduring contributions to society.
• The recipients of the 2020 Crystal Award are bridge-builders who have worked to encourage interpersonal relationships, promote reflection on the human condition, and offer long-term perspectives on the world.

Given:

Speed of the train= 60 kmph

Train passes a person in 15 sec

Explanation:

Convert 60 kmph to meter per sec

60 × 5 / 18

= 100 / 6

Length of the train = time × speed

= 15 × 100 / 6

= 250 meter

∴ The length of the train is 250 meters.

The correct answer is 6 years.

Key Points

• India uses a bicameral structure for both the national government and the states.
• This system divides the state's legislature into the Legislative Assembly, also known as the Vidhan Sabha, and the Legislative Council, also known as the Vidhan Parishad.
• Article 169 of the Indian Constitution describes its institutional structure.
• An MLC is a person who belongs to a legislative council.
• Legislative Council can be dissolved, although it is a permanent House like the Rajya Sabha.
• The term of office for council members is six years.
• Every two years, one-third of the House members leave office.

Important Points

• The Legislative Assembly must pass a special resolution before the Vidhan Parishad, or Legislative Council can be created or disbanded.
• The Legislative Council is the state's upper chamber, to put it another way.
• The Legislative Assembly chooses one-third of this House's members.
• A municipality or other local authority may elect one-third of the members.
• Graduates elect one-twelfth of the members.
• Teachers elect one-twelfth of the members.
• The Governor recommends about one-sixth of the members.
• The Legislative Council chooses its Chairman, who serves as both Deputy Chairman and presiding officer, from among its members.

In first and third dice, 1 and 4 are common.

First dice is rotated 90⁰ anti-clockwise then we get third dice.

The opposite side of 2 is 6.

∴ Here, if number 2 is in bottom, 'number 6' will be on top on a dice.

Hence, the correct answer is "6".

The correct answer is Manikchand.

Key Points

• The Mughal emperor bestowed the title Jagat Seth on Manikchand in the early eighteenth century (lit. Banker of the World).
• It is given to the family who contributed to Bengal being one of the Mughal empire's richest financial districts.
• The owner of this banking firm was also named Bengal's Treasurer-General by the Emperor.
• It was a befitting ode to this banker's home.
• The Jagat Seth family's entire wealth is thought to have been around Rs. 14 crores at that period.
• But the extraordinary skills displayed by Manikchand,  the company's founder, are what really worry us, not the wealth of this house.

Additional Information

• The owner of this financial firm was also named Treasurer-General of Bengal by the Emperor.
• It was an appropriate homage to this family of bankers, honouring their ascent to the status of a pillar of society.
• Midway through the seventeenth century, Hiranand moved to Bihar in pursuit of better opportunities.
• After his father left the company, Manikchand continued it and expanded it in many ways.

Rashik walks 20 m North. Then he turns right and walks 30 m. Then he turns right and walks 35 m. Then he turns left and walks 15 m. Then he again turns left and walks 15 m.

∴ Here, Rashik is 45m East from his original position.

Hence, the correct answer is "45 m East".

The correct answer is Archery.

Key Points

• Deepika Kumari is a world-class archer from Ram Chatti, a town close to Ranchi in Jharkhand.
• She has made three Olympic appearances and has won a series of medals at World Cups, Asian Championships, the Commonwealth Games, the World Championships, and the Asian Games.
• Deepika Kumari made her first significant international impact at the age of 15, which served as the prelude to her heroic ascent.
• Even better, she tied the women's recurve world record in April 2016, just before the Rio Olympics.
• She competes in the sport of archery and is recently ranked No. 1 in the world.

Important Points

• She furthered her reputation in the sport by winning two gold medals at the 2010 Commonwealth Games.
• One in the women's individual recurve competition and the other in the women's recurve team competition.
• In 2012, Deepika Kumari achieved her first individual recurve gold medal at the Archery World Cup in Antalya, Turkey, by hitting the bullseye.
• This came after winning four silver medals at the World Cup in Ogden the year before.

The mirror image of the given figure is as shown below :

Hence, the correct answer is "Option 3".