MP Police Constable : (7 Nov 2025, Shift 2) Memory-Based Paper (Previous Year Paper)

Concept:

• Ocean thermal energy refers to the method of using the temperature difference between the deep parts of the ocean which are cold and the shallow part of the ocean to run a heat engine.
• Ocean thermal energy conversion is an electricity generation system.

Explanation:

• The water at the surface of the ocean or sea is heated by the sun.
• While the deeper section is relatively cold.
• This difference in temperature is exploited to obtain energy in ocean thermal energy conversion plants.
• The warm surface water is used to boil a volatile liquid like ammonia.
• The vapor of a liquid is then used to run the turbine of a generator.
• The cooled water from the depth of the ocean is pumped up and condensed vapor again into a  liquid.

Thus, the correct answer is a volatile liquid.

The correct answer is 'Sonic boom'.

Key Points

• Supersonic airplanes generate shock waves, known as Sonic booms.
• It is a type of sound like a thunderclap that basically arises due to the high speed of supersonic aircraft.
• When the speed travels faster than sound and at much higher altitudes due to the shock waves, the "sonic boom" happens.
• When the supersonic aircraft runs at a higher speed then it forms two principal shock fronts, one at its nose and the other at its tail.
• It would sound like 50 ordinary jets taking off at the same time and may cause damage.
• As a supersonic jet moves through the air, it creates a high-energy, cone-shaped wave that trails behind the jet called a "sonic boom".

Additional Information

• Transition waves
• ​Transition waves sequentially switch bistable elements from one stable configuration to another.
• They have rich physics and potential applications, including unidirectional propagation, energy harvesting, and mechanical computation.
• Ultrasound
• Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing i.e, humans cannot hear it.
• Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz.
• Ultrasound imaging or sonography is often used in medicine.
• Animals such as bats use ultrasound for locating prey and obstacles.
• Transverse waves
• ​A transverse wave is a wave whose oscillations are perpendicular to the direction of the wave's advance.
• This is in contrast to a longitudinal wave which travels in the direction of its oscillations.
• Water waves are an example of a transverse wave.

Explanation:

From the given statements, the Venn diagram is:

I. Some artists are painters.

II. Some painters are writers.

III. All writers are poets.

Now we check the conclusions given in the option:

Option 1) All artists are poets: There is no evidence for the relation between artists and poets, we can see there is no possibility of artists are poets so it will be wrong to say all artists are poets. Thus the conclusion does not follow.

Option 2) Some poets are painters: From the statements, 'some painters are writers' and ' all writers are poets' we can say that there is a relation between painters and poets & from the diagram we can see that some poets are painters. Thus the conclusion follows.

Option 3) Some poets are artists: From the statements and the diagram obtained, we can see that there is no relation between artists and poets also there is no relation between artists and writers. So there is no chance that some poets are artists. So the conclusion does not follow.

Option 4) **All writers are artists: '**All writers are poets' and 'some painters are writers' since no poets are artists therefore no writers are artists and thus the conclusion does not follow.

Hence the correct answer is option 2.

Shortcut Trick

Net change in marks = Correct value − Wrong value = 36 − 63 = −27

Average correction = Net change ÷ Number of students = −27 ÷ 18 = −1.5

New Average = Old Average + Average correction = 60 − 1.5 = 58.5

∴ The correct answer is 58.5.

Alternate Method

Given:

Number of students = 18

Incorrect average = 60

Wrong entry = 63

Correct entry = 36

Formula: Average = Total Sum ÷ Number of observations

⇒ Total incorrect marks = 18 × 60 = 1080

⇒ Total correct marks = 1080 − 63 + 36

⇒ Total correct marks = 1080 − 27 = 1053

⇒ Correct Average = 1053 ÷ 18

⇒ Correct Average = 58.5

∴ The correct answer is 58.5.

Additional Information

Average Correction Rule

Correct Average = Incorrect Average + [(Correct Value − Incorrect Value) ÷ Number of items].

Weighted Average

When two groups with averages A₁ and A₂ and sizes n₁ and n₂ are combined, the new average is (n₁A₁ + n₂A₂) ÷ (n₁ + n₂).

Effect of Change

If every number in a dataset is increased/decreased by a constant 'k', the average also increases/decreases by exactly 'k'.

Key Points

Origin of Species by Natural Selection: 

• It was written by Charles Darwin.
• It was a groundbreaking scientific work by British naturalist Charles Darwin.
• It was originally published in 1859.
• Darwin, through his theory, argued, that organisms gradually evolve through a process he called “natural selection.”
• In natural selection, organisms with genetic variations that are better suited to their environment have an advantage over the organisms of the same species that lack the variation.
• And thus, the better-suited organism or specie, are in turn more likely to survive and more likely to give their features to future generations than the other.
• And such, the cycle of natural selection of the specie is carried out during the course of evolution.

Important Points 

Charles Darwin:

• Charles Darwin was born in 1809 in Shrewsbury, England.
• Darwin proposed a theory of evolution called natural selection in the year 1859.
• According to it those populations which are a better fit (reproductively fit) in an environment will be selected by nature and will survive more.
• Darwin's theory of natural selection is popularly known as 'Darwinism'.
• English naturalist Charles Darwin developed the idea of natural selection after a five-year voyage to study plants, animals, and fossils in South America and on islands in the Pacific.
• Darwin conducted a sea voyage in a sailing ship called H.M.S Beagle as a part of his experiments on the theory of evolution.
• Charles Darwin became almost universally thought of as the "Father of Evolution".
• Darwin's process of natural selection has four components:
• Variation
• Inheritance
• High rate of population growth
• Differential survival and reproduction
• Charles Darwin died in 1882 at the age of seventy-three.

Thus, Charles Darwin wrote 'Origin of Species'.

Additional Information

Thermal conductivity of any material is dependent on two things:

i. The motion of free electrons

ii. Lattice vibrations

The thermal conductivity of gases increases with temperature.

Thermal conductivity of liquids decreases with increasing temperature as the liquid expands and the molecules move apart.

In the case of solids, because of lattice distortions, higher temperatures make it difficult for electrons to flow, hence the thermal conductivity of metals decreases.

Note:

• Thermal conductivity depends on the chemical composition of the substance.
• Thermal conductivity of the liquids is more than the gasses and the metals have the highest.
• Thermal conductivity of the gases increases with the increase in temperature.
• Thermal conductivity of the metal decreases with the increase in temperature.
• Metal, crystalline in structure, have greater thermal conductivity than non-metal.
• Thermal conductivity is affected by the phase change.

The logic follows here is:

• Monday : April :: Friday : August

→ Friday is 4^th day from Monday. Similalry, August is the 4^th month from April.

Hence, the correct answer is "August".

Shortcut Trick

Net deviation = (Correct values) − (Incorrect values)

⇒ Net deviation = (82 + 136) − (92 + 186) = 218 − 278 = −60

⇒ Change in average = Net deviation ÷ Total numbers = −60 ÷ 30 = −2

⇒ Correct average = Old average + Change in average = 106 − 2 = 104

∴ The correct answer is 104.

Alternate Method

Given:

Total numbers (n) = 30

Incorrect average = 106

Incorrect entries = 92 and 186

Correct entries = 82 and 136

Formula Used:

Sum = Average × Number of observations

Incorrect Sum = 30 × 106 = 3180

−60
Error

Correct Sum = 3180 − 60 = 3120

Result: Correct Average = 3120 ÷ 30 = 104

Calculations:

⇒ Incorrect sum of 30 numbers = 30 × 106 = 3180

⇒ Sum of incorrect entries = 92 + 186 = 278

⇒ Sum of correct entries = 82 + 136 = 218

⇒ Correct sum = Incorrect sum − Sum of incorrect entries + Sum of correct entries

⇒ Correct sum = 3180 − 278 + 218 = 3120

⇒ Correct average = Correct sum ÷ Total numbers

⇒ Correct average = 3120 ÷ 30 = 104

∴ The correct answer is 104.

Additional Information

Average (Arithmetic Mean)

The sum of all observations divided by the total number of observations. Formula: Average = Sum of observations ÷ Total observations.

Net Deviation Method

If some observations are replaced, the new average can be quickly found using: New Average = Old Average + (Sum of New Values − Sum of Old Values) ÷ Total Count.

Combined Average

When two groups of sizes n₁ and n₂ have averages A₁ and A₂ respectively, the combined average is calculated as (n₁A₁ + n₂A₂) ÷ (n₁ + n₂).

The correct answer is Pulicat.

Key Points

• Pulicat Lake (also known as Pulicat Lagoon) lies on the borders of Andhra Pradesh and Tamil Nadu.
• Pulicat Lake is the second-largest brackish water lagoon in India.
• It spans the states of Andhra Pradesh and Tamil Nadu, with the majority of its area falling in Andhra Pradesh.
• The lake is separated from the Bay of Bengal by a barrier island known as Sriharikota.
• Pulicat Lake is home to a rich variety of flora and fauna, including numerous bird species, making it an important bird sanctuary and an ecologically significant area.

Additional Information

• Dal Lake:
• Dal Lake is a popular tourist attraction located in Srinagar, Jammu and Kashmir.
• It is known for its scenic beauty, serene surroundings, and floating gardens called "Rad" and "Sankara."
• The lake is surrounded by snow-capped mountains, Mughal gardens, and charming houseboats.
• Shikaras, traditional wooden boats, are commonly used for transportation and sightseeing on Dal Lake.
• Loktak Lake:
• Loktak Lake is the largest freshwater lake in Northeast India, situated in Manipur.
• It is known for its floating phumdis (heterogeneous mass of vegetation, soil, and organic matter) that can be seen on the lake's surface.
• The lake is home to the Keibul Lamjao National Park, which is the world's only floating national park and a refuge for the endangered Manipur brow-antlered deer.
• Loktak Lake plays a crucial role in maintaining the ecological balance and is a significant source of livelihood for the local communities.
• Sambhar Lake:
• Sambhar Lake, located in Rajasthan, is the largest inland saltwater lake in India.
• It is an important wintering area for migratory birds, including flamingos, and is recognized as a Ramsar site.
• Sambhar Lake is known for its salt production, and salt pans can be seen around the lake's vicinity.
• The lake is surrounded by vast saline wetlands, giving it a unique landscape and attracting nature enthusiasts and birdwatchers.

​ 

Important Points

The Correct Answer is Option 4, i.e. The electrical energy is converted into heat energy.

CONCEPT:

• Conservation of energy: The Law of conservation of energy states that the total energy of an isolated system remains conserved (constant), that is, it can neither be created nor be destroyed but it can be transformed from one form to another.
• One of the most common examples of the Law of Conservation of Energy is: water is stored at a height with some potential energy, when the water starts flowing downward then its potential energy is converted into kinetic energy.
• An electric Iron is a heat and pressure combination that eliminates wrinkles.
• The electric iron theory is that as the current passes through a coil, the coil gets red hot and transfers the heat by conduction to the electric iron base plate

EXPLANATION:

• In an electric iron, we provide an electric current that is converted into heat energy. So option 4 is correct.

Additional Information

Given equation: 163 ÷ 5 + 147 × 7 − 19 =?

After interchanging the signs, the equation we get: 163 × 5 - 147 ÷ 7 + 19 =?

→ 163 × 5 - 147 ÷ 7 + 19 =?

→ 163 × 5 - 21 + 19 =?

→ 815 - 21 + 19 =?

→ 834 - 21 =?

→ 813 =?

Hence, the correct answer is "813".

Given:

21, 43, 33, 43, 59, 58, 47, 41, 15, 47, 43

Concept used:

The range of the data is the difference between the largest value and the smallest value

If the total number of observations (n) is an odd number,

Median = (n + 1)/2^th term

If the total number of observations (n) is an even number,

Median = {(n/2)th term + [(n/2) + 1]th term}/2

Calculations:

Arranging the given data in ascending order,

15, 21, 33, 41, 43, 43, 43, 47, 47, 58, 59

Range = Largest value - Smallest value

⇒ 59 - 15 

⇒ 44

Number of terms in the given data = 11

Median = (11 + 1)/2^th term

⇒ Median = 6^th term

⇒ Median = 43

Required mean = (44 + 43)/2

⇒ 87/2

⇒ 43.5

∴ The mean of the range and the median of the given data is 43.5

The correct answer is Peso.

Key Points

• The currency used in Argentina is the Argentine peso.
• 1 US Dollar = 350 pesos; 1 British Pound = 427.7 pesos
• The currency code for Pesos is ARS, and the currency symbol is $$.

Explanation:

The statement that is not true for the anodizing process is:

Clean aluminium article is the anode and oxygen gas is evolved at the cathode.

• Anodizing is an electrochemical process that forms a protective layer of aluminum oxide on the surface of aluminum and its alloys. The process involves immersing the aluminum article in an electrolyte solution and passing an electric current through it, with the aluminum article serving as the anode.
• During anodizing, oxygen gas is not evolved at the cathode. Instead, the cathode is typically made of an inert material such as lead or stainless steel, and hydrogen gas is evolved at the cathode. This is because the hydrogen ions in the electrolyte solution are reduced to hydrogen gas at the cathode.

The other statements are true:

• Anodizing makes aluminum corrosion resistant by creating a hard, durable, and porous layer of aluminum oxide on the surface of the aluminum.
• Metals like aluminum, titanium, and magnesium can be anodized because they are reactive metals that readily form a protective oxide layer.
• Anodizing is used in the aircraft industry because it provides a lightweight and durable surface that can withstand harsh environmental conditions.

Thus, the correct option is (3)

Given,

In a certain code language,

From equation (i) it is clear that 'knot' is coded as 'forak'.

Hence, 'knot' is the correct answer.

Given:

Boat covers a certain distance downstream in 4 hours and returns upstream in 6 hours.

The speed of the boat in still water is 30 km/h.

Concept used:

If boat goes downstream then,

D = (v + u) × t

If boat goes upstream then,

D = (v - u) × t

Where v = speed of boat and u = speed of stream

And t = time

Calculation:

According to question,

⇒ D/30 + u = 4 --------(1)

⇒ D/30 - u = 6  --------(2)

By equating equations in (1) and (2),

⇒ 4(30 + u) = 6(30 - u)

⇒ 120 + 4u = 180 - 6u

⇒ 10u = 60

⇒ u = 6 km/hr

∴ The correct answer is 6 km/hr.

Copenhagen is the capital of Denmark.

Correct option is 2 which is N_2.

• A chemical symbol is a one- or two-letter designation of an element.
• Some examples of chemical symbols are O for oxygen, Zn for zinc, and Fe for iron. The first letter of a symbol is always capitalized.
• If the symbol contains two letters, the second letter is lowercase.

Explanation:

• The chemical formula of Nitrogen is N but Nitrogen exists in a molecule of two ions hence the chemical symbol of Nitrogen gas is written as N₂.

• The symbol of nitrogen is only N. N₂ is the formula of the nitrogen molecule, which has two atoms of nitrogen in it. The nitrogen gas exists only as N₂ molecules in free state.

• The chemical formula for nitrogen gas is N₂.

• Nitrogen gas is one of the diatomic elements, in which one molecule consists of two atoms of the same element bonded by one or more covalent bonds. In the case of N₂, the two nitrogen atoms are bonded by a triple covalent bond.

• One of the diatomic elements is nitrogen gas, which is made up of two atoms of the same element joined by one or more covalent bonds.

 Two atoms of the element join together at ordinary temperature and pressure to generate dinitrogen, a colourless and odourless diatomic gas with the formula N₂.

The correct answer is Option 3: Question them and ask them to either repair the laptop or pay for the losses they caused.

Qualities Projected in this situation:  (Effective intelligence and reasoning ability).

Key Points

• Checklist for attempting SRT questions:

1. Read the question and options carefully.
2. Look for options that are realistic, optimistic, and reflect officer-like qualities.
3. Do not skip any situation.
4. Relegate the negative sentences and choose the most logical option among the remaining. As time is an important factor, hence your thinking ability should be swift.
5. React quickly and be logical.

Additional Information

Officer qualities:

Given:

The sum of three numbers = 126

First number : Third number = 3 : 7

Second number : Third number = 4 :7

Calculation:

First number : Second number : Third number = 3 : 4 : 7

According to the question:

⇒ (3 + 4 + 7) = 14 units = 126

⇒ 1 unit = 126/14 = 9

Second number = 4 units = 4 × 9 = 36

∴ The correct answer is 36.

The correct answer is Article 368.

Key Points

• The procedure of amendment in the constitution is laid down in Part XX, Article 368 of the Constitution of India.
• Article 368 explains how amendments to the Constitution can be initiated and adopted.
• It also includes the process for amendments related to the federal structure of the Constitution, which requires the consent of a majority of states.
• An amendment to the Constitution can be initiated only by the introduction of a bill for the purpose in either House of Parliament (Lok Sabha & Rajya Sabha) and not in the state legislatures.
• After duly passed by both Houses of Parliament and ratified by the state legislatures, where necessary, the bill is presented to the president for assent.
• The president must give his assent to the bill. He can neither withhold his assent to the bill nor return the bill for reconsideration by the Parliament
• After the president’s assent, the bill becomes an Act (i.e., a constitutional amendment act) and the Constitution stands amended in accordance with the terms of the Act.

Additional Information

The correct answer is Muscular force.

Key Points

• The forces acting on a plastic bucket are:

1. Gravitational force
2. Muscular force

• Gravitational force is acting downwards, and muscular force is applied by the hands lifting the bucket upwards.
• Although these forces are acting on the bucket no change is found in its state of motion because the two forces are in the opposite direction & hence balancing each other. As a result net force is zero.
• This force is required whenever the movement of the body occurs. For example,

1. When we lie in a bucket of water, the force acting on the object is Muscular Force.
2. when you pick up a book on the table with your hands, you apply muscular force.

• The Muscular force is exerted by the Earth on every object, which is near or on its surface.

Additional Information

• Magnetic force is attraction, or repulsion that arises between electrically charged particles because of their motion**.**
• The frictional force is defined as the force generated by two surfaces that contact and slide against each other.
• The electrostatic force is defined as an attractive and repulsive force between particles are caused due to their electric charges.

The logic followed here is :-

Second number = Digits of first number is reversed.

416 ∶  614 → If we reverse 416, we get 614.

Similarly,

286 ∶ 682 → If we reverse 286, we get 682.

Hence, the correct answer is "286 ∶ 682".

Given:

The ratio of the number of 50 paise and 1 rupee coins is 4 ∶ 3

The total amount = Rs.10

Calculation:

Let 50 paise and 1 rupee coins be 4x and 3x.

According to the questions,

⇒ 0.50 × (4x) + 1 × 3x = 10

⇒ 2x + 3x = 10

⇒ x = 2

⇒ 0.50 paise coin = 4x → 4 × 2 = 8

∴ The number of 50 paise coins is 8.

The Correct Answer is Option 3 i.e S. Radhakrishna.

• **V.

V. Giri**:

• He served as the fourth President of India
• In 1923, Giri became one of the founders of the All India Railway Men’s Federation.
• Giri has written two important books, one on "Industrial Relations" and the other on "Labour Problems in Indian Industry".
• Giri was the first Vice President to not complete his full term in office on account of being elevated to the office of the President
• Giani Zail Singh: 
• He served as the seventh president of India.
• Singh remains the only Sikh president India has ever had.
• Operation Blue Star was done during his tenure
• S. Radhakrishnan:
• He served as the first Vice President of India and the second President of India.
• He was born on 5^th September 1888 and every year teacher’s day is celebrated in India to commemorate his birth anniversary.
• He succeeded Rajendra Prasad as the President of India.
• N. Sanjiva Reddy:
• He was the sixth president of India.
• He was the first to be elected unopposed and the youngest to occupy Rashtrapati Bhavan.
• Neelam Sanjiva Reddy was the first CM in Andhra Pradesh (1956 - 1960)

The correct answer is Methane.

Key Points

• The major component of bio-gas and Compressed Natural Gas (CNG) is Methane.

Additional Information

• Bio-CNG contains about 92-98 % of methane and only 2-8 % carbon dioxide. 
• The high methane content and calorific value combined with the low quantity of moisture, hydrogen sulphide and impurities makes Bio-CNG an ideal fuel for automobiles and power generation.
• Compressed natural gas is a fuel that can be used in place of gasoline, diesel fuel and liquefied petroleum gas (LPG).
• CNG is made by compressing natural gas, which is mainly composed of methane (CH4).

Statement:

Incessant rain for the past several days has posed the problem of overflowing and flood as the river bed is full of silt and mud.

Courses of action:

I. The people residing near the river should be shifted to safe place.

→ Yes, this statement follows. Because to save the lives of the people they need to be shifted to a safe place.

ll. The people should be made aware about the danger through media.

→ Yes, this statement follows. Because by making people aware of the danger will make them get shifted to a safer place.

III. The silt and mud from the river bed should be cleared from the river bed immediately after receding of the water level.

→ Yes, this statement follows. Because it is necessary to clear slits and mud from the river bed after receding of the water level so that it will not divert the river from its original channel.

Thus, all the statement follows.

Hence, the correct answer is "All follows".

Given:

Chord = 40cm 

Distance from centre to chord = 21 cm

Concept:

The perpendicular drawn from the centre of the chord bisects the chord in two equal parts. 

Pythagoras Theorem:

OA² = OD² + AD²

Calculation:

Let AB be the chord of length 40 cm. 

⇒ OD be the perpendicular distance 

⇒ AO be the radius of the circle 

OA2 = OD2 + AD2

⇒ OA2 = 212 + (40/2)²

⇒ OA2 = 441 + 400 

⇒ OA2= 841

OA = √841

OA = 29

The radius (in cm) of the circle is 29.

The Correct Answer is Lucknow.

In News

• India creates space history as Shubhanshu Shukla becomes 1^st Indian to set foot on ISS.

Key Points

• India created history as IAF Group Captain Shubhanshu Shukla flew to space aboard SpaceX's Dragon spacecraft under the Axiom-4 mission.
• The spacecraft docked with the International Space Station (ISS).
• Shukla is the second Indian in space, after Rakesh Sharma (1984)—a gap of 41 years.
• Shukla is born in Lucknow, Uttar Pradesh.
• Axiom-4 crew includes astronauts from the US, India, Poland, and Hungary.
• Mission duration: 14-day scientific expedition in Low Earth Orbit (LEO).
• Docked with Harmony module’s space-facing port on the ISS.
• Experiments focus on space nutrition and food sustainability, using edible microalgae.
• The research is supported by ISRO, DBT, and NASA.
• Goals: Understand microgravity and space radiation impacts, and enable long-duration space travel with sustainable life-support systems.

CONCEPT:

• Polarizing capacity/polarizing power: The ability of a cation to distort an anion is called the polarization power of that cation.
• Fajan's rules of polarization: According to this rule, the more the size of an anion and more easily will it be polarized and hence the compound will be more non-polar.
• And Less the size of cation more will be it's polarizing power.

EXPLANATION:

• The size of Li+ is the smallest in size among all the given options. So according to Fajan's rule,  Li+ will have the strongest polarizing capacity. Hence option 4 is correct.

Swethi ranked 46^th from the top and 46^th from the bottom in her class.

Number of students in the class = position from top+ position from bottom - 1

=46 + 46 - 1

= 92 - 1

= 91

Hence, ‘91’ is the correct answer.

Shortcut Trick

Difference between Circumference and Diameter = 16.8 cm.

Using the ratio method: (π − 1) × d = 16.8

⇒ (22/7 − 1) × d = 16.8

⇒ (15/7) × d = 16.8

⇒ d = (16.8 × 7) ÷ 15 = 1.12 × 7 = 7.84 cm.

∴ The correct answer is 7.84 cm.

Alternate Method

Given:

Circumference (C) − Diameter (d) = 16.8 cm

Formula Used:

Circumference of a circle = πd

Calculations:

⇒ πd − d = 16.8

⇒ d(π − 1) = 16.8

⇒ d(\(\frac{22}{7}\) − 1) = 16.8

⇒ d(\(\frac{22 - 7}{7}\)) = 16.8

⇒ d × \(\frac{15}{7}\) = 16.8

⇒ d = \(\frac{16.8 \times 7}{15}\)

⇒ d = 1.12 × 7

⇒ d = 7.84 cm

∴ The correct answer is 7.84 cm.

Additional Information

Area of Circle

The space occupied by the circle is given by Area = πr² or (π/4)d².

Relation between Radius and Diameter

The diameter is always twice the radius of the circle, d = 2r.

Semicircle Perimeter

The perimeter of a semicircle includes the arc and the diameter: P = πr + 2r = r(π + 2).

Rani Lakshmi Bai

• She was a queen of the Maratha princely state of Jhansi in North India.
• She was one of the leading figures of the 1857 revolt.
• She led the Jhansi against Sir Hugh Ross in the Indian Rebellion of 1857.
• In 1858, General Hugh Rose came and demanded that Jhansi should surrender and bombarded Jhansi and seized the Jhansi fort.
• An army which was headed by Tantia Tope to free Jhansi was defeated by the British forces.
• The tomb of Rani Laxmi Bai is located at Phool Bagh garden, Gwalior.

The correct answer is Mechanical energy

Key Points

• Kinetic Energy (KE) is the energy possessed by a body due to its motion.
• It is given by the formula \(KE = 1/2 mv^2\)  where 'm' is the mass of the body, and 'v' is the velocity of the body at any given time.
• Examples of Kinetic energy include: 
• ​A fast-moving cricket ball hits the stationary wicket and the wicket uproots from its position.
• Potential Energy (PE) is the energy possessed by a body due to its change in position or shape.
• The sum of Potential energy and Kinetic energy is known as Mechanical energy. Hence option 2 is correct.
• Examples of Potential energy include:
• A stone lying on the roof of a building has potential energy due to its height.

Additional Information

• Electrical energy is the energy required to maintain the flow of charged particles in opposition to the resistance in an electric conductor or an appliance.
• Chemical energy is the energy that is absorbed or released during a chemical reaction.
• Light energy is Electromagnetic radiation with wavelengths between 380 and 750 nm which is visible to the human eye.

The pattern followed here is:

Similarly,

Hence, LPPT is the code for CGGK.

Given :

220 + 80 ÷ [63 - {7 × 8 + (13 - 2 × 4)}]

BODMAS Rule:

Calculation :

220 + 80 ÷ [63 - {7 × 8 + (13 - 2 × 4)}]

⇒ 220 + 80 ÷ [63 - {56 + 5}]

⇒ 220 + 80 ÷ [2]

⇒ 220 +40

⇒ 260

∴ The answer is 260.

The correct answer is 12.

Key Points

• Simhastha is a Hindu religious Mela held in Ujjain after every 12 years.
• Traditionally, four fairs are widely recognized as the Kumbh Melas: the Haridwar Kumbh Mela, the Prayagraj Kumbh Mela, the Nashik-Trimbakeshwar Simhastha and the Ujjain Simhastha.
• These four fairs are held periodically at one of the following places by rotation.

Additional Information

• Simhastha Kumbh Mela has begun in Ujjain, Madhya Pradesh. Simhastha Kumbh Mela is the largest congregation of Hindus.
• Around 5 crore devotees are expected to take part in the Kumbh Mela on the banks of the pious Shipra river. An estimated 50 lakh pilgrims will take the first “Shahi Snan” on the opening day of the month-long fair.

The correct answer is Fusion

Key Points

• Fusion is the process that is opposite to solidification.
• In solidification, a liquid turns into a solid. Conversely, in fusion, a solid turns into a liquid.
• Fusion is also commonly known as melting.
• This phenomenon occurs when a substance absorbs heat, causing its molecules to vibrate faster and eventually overcome the forces holding them in a solid structure.
• Examples of fusion include ice melting into water and wax melting when heated.

Additional Information

• Sublimation is a process where a solid changes directly into a gas without passing through the liquid phase.
• Vaporisation refers to the process of a liquid turning into a gas, either through evaporation or boiling.
• Condensation is the process where a gas turns into a liquid.
• Understanding these processes is crucial in fields such as chemistry, physics, and engineering.
• Each of these processes involves energy changes and plays a significant role in various natural and industrial applications.

If Hollywood movies are hit without songs, then it does not mean that eliminating songs from Bollywood movies will result in a hit. Also, the length of a movie does not decide the success of a movie, thus second argument is also weak. Thus, neither I nor II is strong.

Given: 

Ajeet works 4 times as fast as Sohan. If Sohan can complete a work in 20 days independently

Concept used:

Efficiency = (Total work / Total time taken)

Efficiency = work done in a single day 

Calculation:

Efficiency ratio of Ajeet : Sohan = 4 : 1

So time ratio will be 1 : 4

So Ajeet takes it 20/4 = 5days

Together does in 1 day,

⇒1/5 + 1/20 = 1/4 part

Then Ajeet and Sohan can together finish the work in 4 days

The correct answer is ​Karnataka.

Key Points

• Penna/Penner River:
• Penna/Penner rises on the Nandi Hills in the Chikkaballapur district of Karnataka, passing north to east through Karnataka and Andhra Pradesh.
• The Penna rises in the Chenna Kesava hill of the Nandidurg range, in the Chikkaballapura district of Karnataka, and flows towards the east eventually draining into the Bay of Bengal.
• The total length of the river from its origin to its outfall in the Bay of Bengal is 597 km.
• Located in peninsular India, the Pennar basin extends over the states of Andhra Pradesh and Karnataka having an area of  55 thousand Sq.km.

Additional Information

All information as of Nov 2022

CONCEPT:

• Convex Mirror: Convex mirror is that mirror whose reflecting surface is away from the centre of the curvature.
• Convex mirror is also known as diverging mirror.

EXPLANATION:

• The focus of the convex mirror is behind the mirror.
• When the object is between infinity and the pole of the mirror, then the image formed is between the focus and pole of the mirror and behind the mirror.
• The image so formed by convex mirror is virtual and erect.
• Convex mirror always forms an image smaller than the object.

Additional Information

• All the positions for the concave mirror are given in the below table:

Explanation:

1. He started at the starting line and started running towards the South, upon reaching 5kms, he made a left turn and ran another 10kms before taking a right turn.

2. He then ran 5kms and turned towards his right.

3. After running for 15kms, he turned right and ran for 5kms.

4. After turning left and running for 5kms, he turned left and reached the finish line after another 10kms.

Hence, the destination is South-West of the starting point.

Shortcut Trick 20minutes = 50 parcels

⇒ 120minutes = 300 parcels

⇒ Total parcels = 300 × 5 = 1500 

⇒ 2men × 5 = 10men

⇒ 10 - 2 = 8men

∴ More people are to be employed is 8.

Alternate Method Given:

Two postmen deliver 50 parcels in 20 minutes

Concept:

No. of Postmen = Total Parcels/Efficiency of Postmen

Calculation:

⇒ 1 Postman = 25 parcels in 20min. = 25 × 3 = 75 parcels/hour.

⇒ 1500/75 = 20 postmen/hour

According to the question statement, postmen work for 2 hours.

Therefore,10 postmen/2 hours

More people are to be employed = 10 - 2 = 8

∴ More people are to be employed is 8.

The correct answer is Jhalawar.

Key Points

• Bhawani Natyashala 
• It is located near Jhalawar Fort in Jhalawar city.
• It was built in 1921 A.D. by Maharaja Bhawani Singh.
• It was built for the performance of plays and cultural programs.
• It was modeled on the grand opera house the Maharajas had seen on the European tours.
• It was a popular Parsi theatre during that time and has been renovated.

The correct answer is Nikola Tesla.

• Alternating current was invented by Nikola Tesla.

Key Points

• Alternating current:
• It is an electric current that periodically reverses direction and changes its magnitude continuously with time in contrast to direct current (DC) which flows only in one direction.
• It was invented by Nikola Tesla.

Additional Information

• A rectifier is a device that converts alternating voltage (current) into direct voltage (current).
• An inverter is a device that converts direct voltage (current) into alternating voltage (current).

5 May 2006 = (2005 years + Period from 1.1.2006 to 5.5.2006)

Odd days in 1600 years = 0

Odd days in 4 years = 0

5 years = (4 ordinary years + 1 leap year) = (4 * 1 + 1* 2) = 6 odd days

31 jan + 28 feb + 31 march + 30 April + 5 may = 125 days

125 days = 17 weeks and 6 days = 6 odd days

Total number of odd days = 0 + 0 + 6 + 6 = 12

12 when divided with 7 we get 5 as remainder.

'5' is the code for Friday.

So, it was Friday on 5 May 2006.

Hence, Friday is the correct answer.

Given:

15.5% of 850 + 24.8% of 650 = ?

Calculation:

Let the unknown number be x.

15.5% of 850 + 24.8% of 650 = x

⇒ \(\dfrac{15.5}{100}\) × 850 + \(\dfrac{24.8}{100}\) × 650 = x

⇒ 131.75 + 161.2 = x

⇒ x = 292.95 ≈ 293

∴ 15.5% of 850 + 24.8% of 650 ≈ 293

The correct answer is Bharia. 

Key Points

• Bharia tribe of Madhya Pradesh is one of the special backward tribe.
• They consider themselves younger brothers of the Gond tribe.
• They are found in Southern MP districts like the Patalkot area of Chhindwara, Betul, and Hoshangabad.
• The head of the Bharia tribe is recognized with the title of Patel.
• Bhumka, padihar, and kotyar are all different offices of the tribe.
• It is famous for the equality of rights between men and women.
• They follow the gotra system.
• They are economically weak and live in kutcha houses made up of wood, leaves, and other tree branches.
• Their main dish is ‘Page’ and they also use Mahua seeds.
• They eat non-vegetarian food.
• Bharam, Setam, Saila, and Ahirai are the traditional dance forms of the Bharia tribe.

Concept-

• DNA stands for Deoxyribonucleic acid.
• DNA as an acidic substance present in the nucleus was first identified by Friedrich Meischer in 1869.
• He named it ‘Nuclein’.
• DNA acts as the genetic material in most organisms.
• A DNA molecule consisting of all the genetic material of an organism is known as a chromosome.
• These are thread-like (helical) structures of protein and nucleic acids which​ carry all the genetic information in the form of genes.

Explanation-

• ​Deoxyribonucleic acid (DNA) is a nucleic acid and is therefore made up of nucleotide.
• Each nucleotide consists of a phosphate group, a nitrogenous base (A, T, G, C), and ribose sugar (deoxyribose in case of DNA).
• A nucleoside contains only pentose sugar and a nitrogenous base.
• Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are the two types of nucleic acids found in living systems.
• DNA is a long polymer of deoxyribonucleotides.
• The length of DNA is usually defined as the number of nucleotides (or a pair of nucleotides referred to as base pairs) present in it.

Thereby DNA is composed only of nucleic acid.

Additional Information

Lipids: 

• ​These organic compounds are nonpolar molecules, which are soluble only in nonpolar solvents and insoluble in water because water is a polar molecule.
• In the human body, these molecules can be synthesized in the liver and are found in oil, butter, whole milk, cheese, fried foods, and also in some red meats.

Proteins:

• Proteins are composed of amino acids, arranged into different groups.
• These fundamental amino acid sequences are specific and their arrangements are controlled by the DNA.
• These are the fundamental building blocks of our bodies.
• They are large and complex macromolecules or bio-molecules which perform a major role in the functioning and regulating of our body cells, tissues, and other organs in the human body.​

Given:

• Anita is standing facing the north direction
• she turns 135° anticlockwise.
• After that, she turns 90° clockwise.

Diagram on the basis of given information,

From the above diagram, Anita is facing now in the 'North-West direction'.

Hence, 'North-west' is the correct answer.

Given:

1148 ÷ 28 × 1408 ÷ 32 = ?

Calculation:

1148 ÷ 28 × 1408 ÷ 32 = ?

⇒ 41 × 44

⇒ 1804

∴ The correct answer is 1804.

The correct answer is Kerala.

Key Points

• Sasthamkotta lake which is known as the Queen of Lakes is located 29 km from Kollam**, Kerala**.
• Sasthamcotta Lake or Sasthamkotta Lake, also categorized as a wetland, is the largest freshwater lake in Kerala
• The lake is named after the ancient Sastha temple (a pilgrimage centre) located on its bank.

Additional Information

The correct answer is Pistil.

Key Points

• Pistil: The pistil is the innermost part of the flower. It is the female part of the flower.
• Stamen: The stamen is the male part of the flower.
• Petals: The petal is the colored part of the flower that gives it a unique shape.
• Sepals: These are leaf-like structures attached to the outside of the flower. They're very similar to petals.
• The schematic diagram of the flower is as follows:

The logic followed here is:

Logic: Second Number = (√First Number) ÷ 7

196: 2

→ 2 = √196 ÷ 7 

→ 2 = 14 ÷ 7 

784: 4

→ 4 = √784 ÷ 7 

→ 4 = 28 ÷ 7 

Similarly,

3136:?

→ ? = √3136 ÷ 7

→ ? = 56 ÷ 7

→ ? = 8

Hence, the correct answer is "8".

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

1.3 × 2.2 + 1.7 × 2 = ? - 14.74

⇒ 2.86 + 3.4 = ? - 14.74

⇒ 6.26 = ? - 14.74

⇒ ? = 14.74 + 6.26 = 21

∴ The value of ? is 21.

• There are 3 members in the Election Commission which include a Chief Election Commissioner and two election commissioners.
• They are appointed for 6 years or can work only till the age of 65, whichever comes first.
• They are appointed by the President of India.

The correct answer is Starch.

Key Points

• Starch is a polymeric carbohydrate consisting of numerous glucose units joined by glycosidic bonds.
• Starch is a polysaccharide comprising glucose monomers.
• Glucose is a simple sugar having the molecular formula C6H12O6.
• Glucose circulates in the blood of animals in the form of blood sugar.
• Glucose is stored as a polymer.
• In plants, it is stored as starch and in animals as glycogen.

Additional Information

• Monosaccharides are simple sugars in which there are one oxygen atom and two hydrogen atoms for each carbon atom present in the molecule.
• They have general formula as (CH₂O)_n.
• Disaccharides are made up of two monosaccharides joined together by a condensation reaction.
• Polysaccharides are polymers formed by combining many monosaccharide molecules (more than two) by condensation reactions.

The logic is:

Hence, ‘140’ is the correct answer.

Shortcut Trick

Profit Ratio = (Capital₁ × Time₁) / (Capital₂ × Time₂)

⇒ 2 / 1 = (76000 × 12) / (57000 × t)

⇒ 2 × t = (4 × 12) / 3 ⇒ t = 8 months

Vivek joined after = 12 − 8 = 4 months.

∴ The correct answer is 4 months.

Alternate Method

Given:

Manan's investment = ₹76,000

Time of Manan's investment = 12 months

Vivek's investment = ₹57,000

Ratio of their profit at the end of the year = 2 ∶ 1

Formula Used:

Profit Ratio = (Capital₁ × Time₁) ∶ (Capital₂ × Time₂)

0
4
12 months

Manan
Capital: ₹76,000 | Time: 12 months

Vivek
Capital: ₹57,000 | Time: 8 months

Joined after 4 months

Calculations:

Let Vivek invest his money for t months.

⇒ Profit of Manan ∶ Profit of Vivek = (76000 × 12) ∶ (57000 × t)

⇒ 2 / 1 = (76000 × 12) / (57000 × t)

⇒ 2 / 1 = (76 × 12) / (57 × t)

⇒ 2 = (4 × 12) / (3 × t)

⇒ 2 × t = 48 / 3

⇒ 2t = 16

⇒ t = 8

So, Vivek invested his money for 8 months.

Time after which Vivek joined = Total duration − Time invested

⇒ 12 − 8 = 4 months

∴ The correct answer is 4 months.

Additional Information

Partnership Profit Ratio

The profit earned in a business is distributed among the partners in the ratio of the product of their invested capital and the time duration of the investment. Ratio = (C₁ × T₁) ∶ (C₂ × T₂).

Joining Mid-way

If a total business duration is 'D' months and a partner joins 'x' months after the start, their capital is invested for (D − x) months.

Working vs Sleeping Partner

A working partner may receive a fixed percentage of the total profit as salary before the remaining profit is distributed according to the regular investment ratios.

The correct answer Shahdol

Key Points

• Virateshwar temple is situated in the Shahdol district of Madhya Pradesh.
• The ancient Virateshwar Temple is dedicated to Lord Shiva. 
• The Archaeological Survey of India (ASI) Monument number for this temple is N-MP-255. ASI database mentions it as "Virath Temple and remains".
• Built between the 10^th and 11^th centuries by Maharaja Yuvraj Deva of the Kalchuri dynasty, it is known for its religious as well as historical significance.
• An ornate structure adorned by beautiful sculptures of various deities, the temple is an excellent specimen of Kalchuri architecture.
• Some of the other noteworthy religious sites include several Kali temples, the Jagannath Temple, and the Jain Temple.

Explanation:

LED (light emitting diode):

• Light-emitting diodes (LED’s) are specially doped P N junction diodes, which emit light when a proper forward bias is applied across the diodes.
• The LED’s fabricated by Gallium Phosphide produces visible red light and Gallium Arsenide Phosphide semiconductor produces visible red light.
• Infrared LED’s are designed by Gallium Arsenide semiconductors which emit invisible infrared light in forward bias.

The correct answer is Option 2: go and help in saving the residents of the hut immediately and make an arrangement to help the victims

• Qualities Projected in this situation:  (Effective Intelligence, Self-confidence, Sense of responsibility, Courage, and Speed of decision making).

Key Points

• Checklist for attempting SRT questions:

1. Read the question and options carefully.
2. Look for options that are realistic, optimistic, and reflect officer-like qualities.
3. Do not skip any situation.
4. Relegate the negative sentences and choose the most logical option among the remaining. As time is an important factor, hence your thinking ability should be swift.
5. React quickly and be logical.

Concept Used:

Amount (A) = Principle (P) + Simple Interest (SI)

Calculation:

A₁ = P + SI of 5 year

⇒ 520 = P + SI of 5 year    ---(1)

Now, A₂ = P + SI of 7 year

⇒ 568 = P + SI of 7 year    ---(2)

eq(2) - eq(1)

⇒ 568 - 520 = P - P + 7SI - 5SI

⇒ 48 = 2SI

So, the SI for 1 year is Rs. 24

Now,

⇒ 520 = P + SI of 5 year

⇒ 520 - 120 = P

⇒ P = Rs. 400. ∴ The Sum of money is Rs. 400.

The correct answer is Article 352.

Key Points

• National Emergency
• Article 352 says that the President can impose an emergency if he agrees that a grave security threat exists whereby the security of India or any part of her territory is threatened whether by war, external aggression, or armed rebellion, he/she can declare emergency rule in the whole of India or on any part of the Indian Territory. Hence, Option 2 is correct.
• This is also called a ‘National Emergency’.
• It can apply to the entire country or part.
• It can be declared even before an actual occurrence if the president is satisfied with an imminent threat.
• The president can declare this only after the written recommendation of the entire cabinet.
• A proclamation can be subject to judicial review.​
• Emergency Provisions are contained in Part Eighteen of the Constitution of India.
• The President of India has the power to impose emergency rule in any or all the Indian states if the security of part or all of India is threatened by "war or external aggression or armed rebellion".
• The Constitution stipulates three types of emergencies:
• National Emergency- Article 352.
• Constitutional Emergency/ State Emergency/ President Rule- Article 356.
• Financial Emergency- Article 360.

Additional Information

• | Article | Description | | --- | --- | | Article 280 | - It deals with Finance Commission. | | Article 350 | - Language to be used in representations for redress of grievances. | | Article 312 | - This article is related to the All-India services. |

The correct answer is seven.

Key Points

• White light: The light that contains all the wavelengths in the visible light range is called white light.
• It is the combination of seven light colors:

1. Violet, 2. Indigo 3. Blue, 4. Green, 5. Yellow, 6. Orange, 7. Red

• Dispersion of light: The splitting of a composite beam of light into its constituent colors is called dispersion of light.
• The dispersion of white light occurs because the colors of white light travel at different speeds through the glass prism.
• The dispersion was discovered by Sir Issac Newton.
• Newton discovered that light is made up of seven different colors.

The correct answer is Option 4: Finish household activities faster and study harder in spare time.

• Qualities Projected in this situation:  (Effective intelligence and speed of decision).

Key Points

• Checklist for attempting SRT questions:

1. Read the question and options carefully.
2. Look for options that are realistic, optimistic, and reflect officer-like qualities.
3. Do not skip any situation.
4. Relegate the negative sentences and choose the most logical option among the remaining. As time is an important factor, hence your thinking ability should be swift.
5. React quickly and be logical.

Additional Information

Officer qualities:

Given:

Compound Interest (CI) for 2 years = Rs.309

Simple Interest (SI) for 2 years = Rs.300

Formula used:

Simple Interest, SI = (P × R × T)/100

Calculation:

Since the difference in CI and SI for 2 years = 309 - 300 = Rs. 9

The difference between CI and SI for 2 years is given by (SI for 1 year) × (R/100)

SI for 1 year = Rs.300/2 = Rs.150

Difference = Rs.9 = (150 × R)/100

⇒ 9 = (150R)/100

⇒ 900 = 150R

⇒ R = 900/150

⇒ R = 6%

∴ The rate of interest per annum is 6%.

The correct answer is Ellora.

Key Points

• Ellora is a UNESCO World Heritage Site.
• It is located in Maharashtra.
• It is one of the largest rock-cut Hindu temple cave complexes in the world.
• It has artwork dating from the period 600–1000 CE.

Additional Information

• The Ajanta Caves in Maharashtra are approximately 30 rock-cut Buddhist cave monuments.
• It dates from the 2^nd century BCE to about 480 CE.
• The Karla Caves in Maharashtra are a complex of ancient Buddhist Indian rock-cut caves.
• They were developed over the period from the 2^nd century BCE to the 5^th century CE.
• Bhaja Caves in Maharashtra is a group of caves that include 22 caves and is one of the earliest Buddhist rock-cut monasteries in Deccan.
• It dates back to the 2^nd Century CE.

The diagrammatic representation of the data given here is:

Hence, the person is going in "South direction".

Given:

Votes for A = 61% of total votes 

Votes % for A - Votes % for B = 3806

Calculation:

Let, total votes = 100%

Votes for B = (100 - 61)% of total votes = 39% of total votes

According to the question,

⇒ (61 - 39)% = 3806

⇒ 22% = 3806

⇒ 1% = 3806/22

So, 100% = \(\dfrac{3806\times 100}{22}\) = 17300 votes

∴ Total number of votes cast is 17300.

The Correct Answer is Guldar.

In News

• India’s First Underwater Museum and Artificial Coral Reef to Be Developed Around INS Guldar in Maharashtra.

Key Points

• India’s first underwater museum and artificial coral reef will be created around INS Guldar.
• Location: Nivati Rocks, Vengurla, Sindhudurg district, Maharashtra.
• The warship INS Guldar was decommissioned in January 2024.
• The Union Tourism Ministry has approved ₹46.91 crore for the project.
• Aim: Promote marine conservation, scuba diving tourism, and submarine tours in future.
• The ship weighs 1,120 tons and is now handed over to Maharashtra Tourism Development Corporation.

By using the following symbols in the table given below, we can draw the following family tree:

Statement:

Pointing to a girl, a lady said, "She is the daughter of brother of my sister."

Here, the girl is the daughter of brother of lady's sister i.e. the girl is daughter of lady's brother.

So, the lady is the 'aunt' of the girl.

Hence, the correct answer is "Aunt".