SSC CHSL Previous Paper 1 (Held On: 17 March 2020 Shift 1) (Previous Year Paper)

The correct answer is Intensive.

Key Points

• Let's look at the meanings of the given word and marked option:
• Extensive- covering or affecting a large area. (एक बड़े क्षेत्र को कवर करना या प्रभावित करना)
• Intensive- concentrated on a single area or subject or into a short time. (गहन; एक ही क्षेत्र या विषय पर या थोड़े समय में केंद्रित)
• ​​Let's look at the meanings of the other given options: 
• Elaborate- involving many carefully arranged parts or details; detailed and complicated in design and planning. (कई सावधानीपूर्वक व्यवस्थित भागों या विवरणों को शामिल करना; डिजाइन और योजना में विस्तृत और जटिल)
• Intricate- very complicated or detailed. (बहुत जटिल या विस्तृत)
• Lengthy- (especially in reference to time) of considerable or unusual length, especially so as to be tedious. ( (विशेषकर समय के संदर्भ में) काफी या असामान्य लंबाई का, विशेष रूप से थकाऊ होने के लिए)
• Hence from the given meanings, we find that Extensive and Intensive are antonyms.

The correct answer is Belief.

Key Points

• Let's look at the meanings of the given word and marked option:
• Trust- firm belief in the reliability, truth, ability, or strength of someone or something
• Belief- an acceptance that a statement is true or that something exists
• ​​​Let's look at the meanings of the other given options: 
• Welfare- the health, happiness, and fortunes of a person or group
• Safety- the condition of being protected from or unlikely to cause danger, risk, or injury
• Ability- possession of the means or skill to do something
• Hence from the given meanings, we find that Trust and Belief are synonyms.

The correct answer is: Quarrell.

Key Points

• The word "Quarrell" is incorrectly spelled. The correct spelling is "Quarrel". It refers to an angry argument or disagreement. (झगड़ा)
• Example: They had a quarrel over a small misunderstanding.
• The correct word "Quarrel" means a heated or angry disagreement between people, often over a trivial matter. (तकरार / झगड़ा)
• Example: The siblings often quarrel about sharing their toys.
• Therefore, the correct answer is- Quarrell

Additional Information

• Quantity (मात्रा): The amount or number of something.
• Argument (तर्क / बहस): A reason or set of reasons given to persuade others or prove a point.
• Aisle (गलियारा): A passage between rows of seats, shelves, or pews.

The correct answer is rise in​.

Key Points​

• There are some verbs/nouns/adjectives which are followed by fixed prepositions as given below:
• ​Exonerate from, refrain from, a rise in something, land on, aptitude for, inured to, accused of, a predilection for, differ from, vexed at, etc.
• Example:
• August has seen a large rise in the number of unemployed.

​Hence, according to the phrases given above, 'rise in' will be the correct choice.

• The given phrase 'a rise in something' means an increase in degree or importance.
  

Correct Sentence: Several environmentalists from the city conducted a meet to discuss issues related to the rise in pollution levels created by the growing number of pharmaceutical companies.

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Additional Information

• There are some fixed prepositional phrases given below:
• ​by the dint of, out of jealousy, in danger, by car/bus/train, owing to, on a trip, for a change, etc.
• For example:
• ​I went on a trip to Goa last month.

The correct answer is to.

Key Points​

• ​There are some fixed prepositional phrases given below:
• ​by dint of, out of jealousy, on sale, date back to, at a discounted price, by the dozen, owing to, on a trip, for a change, etc.
• For example:
• This house dates back to 1780.

​The phrase 'date back to' means to have existed for a particular length of time or since a particular time​.

• Thus the preposition 'to' will be the correct choice in the 1st blank.
  

Additional Information

• There are some verbs/nouns/adjectives which are followed by fixed prepositions given below:
• ​Exonerate from, refrain from, suspicious of, interested in, inured to, accused of, a predilection for, a respite from, vexed at, etc.
• Example:
• ​After spending some time on the island they became inured to the hardships.

The correct answer is are​.

Key Points

• In a sentence, the verb is used according to person and number.
• The verb always conforms to the main subject of the sentence.
• In the given sentence, the main subject is 'the Ellora caves' which is plural.
• Hence, the auxiliary verb will also be plural i.e. 'are' in the 2nd blank as the given sentence is in the present tense.
  

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Additional Information  

• If an article is used before every subject, it denotes different people/things. Hence, a plural verb will be used.
• Example:
• ​The writer and the poet has come**. (incorrect)
• ​The writer and the poet have come. (correct)

The correct answer is The.

Key Points​​

• ​Articles are words that define a noun as specific or unspecific.
• The definite article 'the' is used with the name of things that are unique or already mentioned before.
• The article 'a' is used with the name of things that are not specific.
• The article 'an' is used with the words having the first letter as a vowel and having the sound of a vowel.
• In the given 3rd blank part of the cloze test, the article 'the' will be used as the 34 caves have already been mentioned in the cloze test.
  

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Additional Information  ​​

• ​​​If a word starts with a vowel but has the sound of a consonant, it will be preceded by the article 'a'.
• Example: a university, a union, a one rupee note, etc.

The correct answer is carved.

Key Points

• Let's look at the meanings of the given options: 
• carved- cut (a hard material) in order to produce an object, design, or inscription
• created- bring (something) into existence
• constructed- build or erect (something, typically a building, road, or machine)
• erected- construct (a building, wall, or other upright structure)
• ​As per the possible context of the sentence, the 34 caves were made from the parent rock.
• Hence, from the given meanings, we find that the 1st option i.e. carved is the correct choice in the 4th blank.

The correct answer is status.

Key Points

• Let's look at the meanings of the given options: 
• role- an actor's part in a play, movie, etc.
• symbol- a thing that represents or stands for something else, especially a material object representing something abstract
• status- the official classification given to a person, country, or organization, determining their rights or responsibilities
• function- an activity or purpose natural to or intended for a person or thing
• ​As per the possible context of the sentence, the caves were accorded the position/title of the World Heritage Site in 1983.
• Hence, from the given meanings, we find that the 3rd option i.e. status is the correct choice in the 5th blank.

The correct answer is Sheath.

Key Points

• Let's look at the meaning of the marked option:
• Sheath- a cover for the blade of a knife or sword (म्यान)
• Let's look at the meanings of the other given options: 
• Guard- watch over in order to protect or control (रक्षक)
• Screen- a thing providing concealment or protection (परदा)
• Shield- a broad piece of metal or another suitable material, held by straps or a handle attached on one side, used as a protection against blows (ढाल)
• Hence, from the given meanings, we find that Sheath is the correct one-word substitute.

The correct answer is Congratulations to​​.

Key Points

• Let's look at the meaning of the given idiom:
• Hats off to someone​- to give (someone) praise or credit
• Example: 
• I take my hat off to anyone who is involved in political life for such a long time.
  

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Additional Information  

• Let's look at the origin of the idiom:
• This particular idiom is considered to have emerged during the middle of the 19th when men used to wear hats.
• Usually, at that time when a man meets a woman on the street, he took his hat off as a way to show respect.

The correct answer is Expidition.

Key Points

• Let's look at the correct spelling and meaning of the marked option:
• Expedition- a journey or voyage undertaken by a group of people with a particular purpose, especially that of exploration, scientific research, or war
• Example: 
• Scott died while he was on an expedition to the Antarctic in 1912.
• Let's look at the meanings of the other given options:
• Extempore- spoken or done without preparation
• Extinct- (of a species, family, or other groups of animals or plants) having no living members; no longer in existence
• Experiment- a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact

The correct answer is *"*They had to wait for for the luggage​".

Key Points

• There are some uncountable nouns (followed by a singular verb) which don't take the articles 'a/an', many, few, and plural forms:​

• Furniture, scenery, luggage, temper, hair, knowledge, equipment, pottery, music, jewellery, etc.​

• Example:

• ​The sceneries at my friend's house enchanted me.

• The scenery at my friend's house enchanted me.

• As per the rule given above, 'luggage' will be used instead of 'luggages' in the 4th part of the given question.
  

Correct sentence: They had to wait for the luggage to be put into the cab before they themselves got into it.

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Additional Information

• The nouns given below seem plural in form but in actuality are singular:

• ​news, billiards, summons, physics, measles, innings, etc.

• Example: 

• ​Physics is an interesting subject.​

• हाँ कुछ  uncountable nouns (followed by a singular verb) जो article 'a/an', many, few, and plural form: नहीं लेते हैं:

• Furniture, scenery, luggage, temper, hair, knowledge, equipment, pottery, music, jewellery, etc.​

• उदाहरण :

• The sceneries at my friend's house enchanted me.

• The scenery at my friend's house enchanted me.

• ऊपर दिए गए नियम के अनुसार, 'luggage' को देखते हुए सवाल के 4th part में 'luggages' के स्थान पर इस्तेमाल किया जाएगा।
  

सही वाक्य: They had to wait for the luggage to be put into the cab before they themselves got into it.

The correct answer is no information about​.

Key Points

• There are some uncountable nouns (followed by a singular verb) which don't take the articles 'a/an', many, few, and plural form:​

• Furniture, scenery, luggage, temper, hair, knowledge, equipment, pottery, music, jewellery, etc.​

• Example:

• ​The sceneries at my friend's house enchanted me.

• The scenery at my friend's house enchanted me.

• As per the rule given above, 'information' will be used instead of 'informations' in the underlined part of the given question.

• Thus we are left with the 1st option as the only correct choice.
  

Correct sentence: I had no information about the bank strike so I went there yesterday.

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Additional Information

• The nouns given below seem plural in form but in actuality are singular:
• ​news, billiards, summons, physics, measles, innings, etc.
• Example: 
• ​Physics is an interesting subject.

The correct answer is The report of the sub-committee is being presented in a week’s time.

Key Points

• The structures for both the active and passive forms for present continuous tense are given below:
• Active form- Subject + is/am/are + V1 + ing + Object
• Passive form- Object + is/am/are + being + V3 + by + Subject
• Example:
• He is playing a Cricket match. (active voice)
• A Cricket match is being played by him. (passive voice)
• The given sentence is an assertive one and in the Active voice form.
• Follow the passive form structure for the present continuous tense given above:
• Exchange the places of the subject and object. (The sub-committee - its report)
• Since the given subject 'the report' is a singular noun, the auxiliary verb 'is' will also be singular.
• Now the verb will be used accordingly. (being presented)
• At last line up the remaining part.
  

Following these steps, we finally get- The report of the sub-committee is being presented in a week’s time.

The correct answer is Did you know whether.

Key Points

• The simple present tense is used when an action is happening right now, to state or ask about things in general, or when it happens regularly or unceasingly.
• The structure is given below:
• Subject + V1 + object.
• The verb will take 's/es' if the given noun/pronoun (3rd person) is singular.
• Example:
• ​He plays badminton daily.
• In the given part of the sentence, we need a simple present verb tense as a general statement has been given here.
• Since 'you' is a plural pronoun, the plural auxiliary verb i.e., 'do' will be used.

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Correct Sentence: Do you know whether or not we can exchange the dress if my sister doesn’t like it?

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Additional Information  

• Certain verbs used only in the simple present tense are given below:
• ​See, think, know, possess, like, want, desire, hate, seem, imagine, etc.
• Example:
• ​My brother is owning a car. (incorrect)
• ​My brother owns a car. (correct)

The correct answer is Unknown to everyone​​.

Key Points

• Let's look at the meaning of the given idiom:
• behind the scenes- unknown to the public
• Example: 
• Any discrepancy between cognitive and neurobiological results indicates that something unexpected may be going on behind the scenes.
  

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Additional Information  

• Let's look at the origin of the idiom:
• The term comes from the theater, where, in the seventeenth and eighteenth centuries, violent action such as a murder or execution generally took place backstage (behind the scenery).
• By the late eighteenth century, the expression was used figuratively for any activity that took place out of the public eye.

The correct answer is No improvement​​.

Key Points

• The present perfect tense is a verb tense that shows an action or state that either occurred at an indefinite time in the past or began in the past and continued to the present time.
• The structure is given below:
• Subject + has/have + V3 + object. (active voice)
• Object + has/have + been + V3 + subject. (passive voice)
• ​Example:
• ​He has played some matches for the Indian Cricket team. (active voice)
• Some matches have been played by him for the Indian Cricket team. (passive voice)
• In the given sentence, we need to follow the structure in the active voice form.
• Hence according to the rule given above, 'have decided' is the most appropriate choice of the verb form as the subject (Harry and Meghan) is plural.
• Thus we are left with the 1st option as the only correct choice.
  

Correct Sentence: Harry and Meghan have decided to work and become financially independent.

The correct answer is Expand.

Key Points

• Let's look at the meanings of the given word and marked option:
• Abbreviate- shorten (a word, phrase, or text)
• Expand- become or make larger or more extensive
• ​​Let's look at the meanings of the other given options: 
• Challenge- a call to take part in a contest or competition, especially a duel
• Dispute- a disagreement, argument, or debate
• Oppose- disapprove of and attempt to prevent, especially by argument
• Hence from the given meanings, we find that Abbreviate and Expand are antonyms.

The correct answer is CBDA.

Key Points

• While arranging the parts of the passage, we should find some grammatical or contextual connections between them:
• Sentence C introduces us to the subject 'two cats'. It is the introductory sentence and will be put in the first place.
• Sentence B tells us about the instance of the cats spotting a loaf of bread. It will be put in second place.
• Sentence D tells us the reaction of the cats after seeing the loaf of bread. It will be put in third place.
• The last sentence is A as it mentions the conviction of one of the cats that the loaf was hers as she first spotted it.
  

Thus, the correct order is - Once upon a time, two cats were passing through a street. Suddenly they spotted a loaf of bread lying beneath a tree. Both pounced upon it and caught the loaf at the same time. “It is mine. I saw it first," claimed one cat.

The correct answer is CBAD.

Key Points

• While arranging the parts of the passage, we should find some grammatical or contextual connections between them:
• Sentence C introduces us to the simultaneous development of Physics and astronomy in ancient times. It is the introductory sentence and will be put in the first place.
• Sentence B tells us about an Arab writer and scientist 'Ibn Al-Haitham'. It will be put in second place.
• Sentence A tells us the book 'Kitab al- Manazir' written by the above-mentioned author. It will be put in third place.
• The last sentence is D as it mentions the contents (disproving of the ancient Greek concept of vision and introduction of a new theory) of the above-mentioned book.
  

Thus, the correct order is - During the ancient period, the development of Physics took place simultaneously with the development of astronomy. However, during the medieval period, the notable work of an Arab writer and scientist, Ibn Al-Haitham revolutionised the concept of physics. Ibn Al-Haitham wrote a book in seven volumes namely ‘Kitāb al-Manāẓir’ also known as ‘The Book of Optics.’ In this book, Ibn Al-Haitham disproved the ancient Greek concept of vision and introduced a new theory.

The correct answer is Attractive.

Key Points

• Let's look at the meanings of the given word and marked option:
• Alluring- powerfully attract or charm; tempt
• Attractive- (of a thing) pleasing or appealing to the senses
• ​​​Let's look at the meanings of the other given options: 
• Cheating- act dishonestly or unfairly in order to gain an advantage, especially in a game or examination
• Deceitful- guilty of or involving deceit; deceiving or misleading others
• Distracting- preventing concentration or diverting attention; disturbing
• Hence from the given meanings, we find that Alluring and Attractive are synonyms.

The correct answer is visible.

Key Points

• Let's look at the meanings of the given options: 
• evident- plain or obvious; clearly seen or understood
• exposed- cause someone to be vulnerable or at risk
• revealed- make (previously unknown or secret information) known to others
• visible- able to be perceived or noticed easily
• The given options are very close in meanings but as per the possible context (the six eclipses will be perceived by the sky gazers), we find that the 4th option i.e. visible is the correct choice.
  

​Correct Sentence: Astronomy enthusiasts and sky gazers will be able to watch six eclipses in 2020, but only three of them are expected to be visible in India.

The correct answer is The doctor advised Jaya, “From tomorrow put the eye drops into your eyes four times a day.”

Key Points

• Let's look at the steps to change the sentence from indirect to direct speech:
• When the indirect speech is in an assertive form, we follow the steps given below:
• Change the sentence in the direct speech from assertive to imperative.
• The tense of reported speech is changed only when the reporting verb is in the past tense.
• The reporting verb 'advised' will remain the same.
• 'To infinitive' is replaced by a comma and inverted commas.
• ​Words showing time and place are changed accordingly. (the next day - tomorrow)
• ​​The personal pronouns will be changed according to the subject and object of the reporting verb.
• Here 'her' will be converted into 'your' as per the subject.
• 'to put' changes into 'put'.
• At last line up the remaining part.
  

Following these steps, we finally get- The doctor advised Jaya, “From tomorrow put the eye drops into your eyes four times a day.”

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Additional Information

• The sentence which expresses a prayer, keen wish, curse, etc. is called an optative sentence.
• This kind of sentence generally starts with 'may' and 'wish'.

The correct answer is Reservoir.

Key Points

• Let's look at the meaning of the marked option:
• Reservoir- a large natural or artificial lake used as a source of water supply
• Let's look at the meanings of the other given options: 
• Pond- a small body of still water formed naturally or by hollowing or embanking
• Creek- a stream, brook, or minor tributary of a river
• Pool- a small area of still water, typically one formed naturally
• Hence, from the given meanings, we find that Reservoir is the correct one-word substitute.

Given,

Farmer : Field :: Artist : ?

The pattern followed here is, 

The farmer works in the field similarly, an artist works in the theatre.

Hence, the correct answer is Theatre.

Concept:

1. We have to check the conclusions are 100% match with the statement. If the conclusion is 100% match with the given statement then the conclusion is true. If there is a 1% chance of not following the statement then the conclusion is considered to be false.

2. The possibility case can be considered to be "false" in "definite case".

3. In Possibility case, either "can" or "possible" word must be present.

Explanation

Given, 

Statements:

All woods are roots.

All fruits are roots.

No woods are a fruit.

The least possible Venn diagram is as follows,

Conclusion:

(I) Some roots are fruits - True

As it is given in the statements that All fruits are roots then some roots will definitely fruits.

(II) All roots are woods - False

As it is given in statements that "No woods are a fruit" and "All fruits are roots" hence all roots can not be woods.

Hence, the Only conclusion I follow.

 

Additional Information

The pattern followed here is,

6 ∗ 5 = 30 ∗ 3 = 90 + 1 = 91

8 ∗ 7 = 56 ∗ 3 = 168 + 1 = 169

10 ∗ 9 = 90 ∗ 3 = 270 + 1 = 271

Similarly,

22 ∗ 5 = 110 ∗ 3 = 330 + 1 = 331

Hence, the answer is 331.

Given,

 

The pattern followed here is,

Column 1:

10 * 2 = 20, 5 * 2 = 10, 6 * 2 = 12

So, 20 + 10 + 12 = 42

Column 2:

17 * 2 = 34, 3 * 2 = 6, 14 * 2 = 28

So, 34 + 6 + 28 = 68

Column 3:

8 * 2 = 16, 15 * 2 = 30, X * 2 = 2X

16 + 30 + 2X = 92

2X + 46 = 92

2X = 92 - 46 = 46

So, X = 23

Hence, the answer is 23.

Given,

A, C, E, D, C, E, G, F, ?

The pattern followed here is,

Hence, the correct answer is E.

Given,

EC, H, HF, N, KI, U

The pattern followed here is,

EC = E + C = 5 + 3 = 8

H = 8

So, EC = H

HF = H + F = 8 + 6 = 14

N = 14

So, HF = N

KI = K + I = 11 + 9 = 20

U = 21

Here, KI ≠ U

Hence, U does not belong to the group.

Given,

The pattern followed here is,

25² - 5² = 625 - 25 = 600

27² - 3² = 729 - 9 = 720

Similarly,

X² - 9² = 880

X² = 880 + 81 = 961

X = $\sqrt{961}$ = 31

Hence, the correct answer is 31.

Given,

RUMMY is written as QVLNX.

The pattern followed here is,

Similarly,

Hence, the correct answer is BIDTR.

Given,

bac_ac_acb _ ba

1) cbacaacbacbbcba

2. abacbacbacbacba

3. abaccaccacbbbba

4) cba/cba/cba/cb**a/**cba

Here we see the pattern is followed in the fourth option.

Hence, the correct answer is c, b, b, a, c.

Given,

Chirp, Caw, Foal, Howl

The relation between all the words is that all are sounds made by birds and animals except Foal.

Foal means small horse.

Hence, the correct answer is Foal.

Given,

The number of triangles is,

Small triangles = 12

The number of triangles consists of triangles = 12

The number of triangles consists of triangles = 4

∴ The total number of triangles = 28

Hence, the correct answer is 28.

Given,

27 : 125 :: 343 : ?

The pattern followed here is,

27 = (3³) : 125 = (5³) : : 343 = (7³) : 729 = (9³)

Hence, the correct answer is 729.

Given,

CAG : GEK :: HEL : ?

The pattern followed here is,

In the same way,

Hence, the correct answer is LIP.

Given,

144, 256, 676, 81

The relation here is,

144 - 12²

256 - 16²

676 - 26²

81 - 9²

Here we see all the numbers are square of even numbers except 81, which is the square of an odd number.

Hence the correct answer is 81.

Given,

The paper will look as follow when unfolded,

Hence the correct answer is option 3.

Given,

683 is coded as FOX, 654 is FIN, 4581 is NIOC

The pattern followed here is,

Similarly,

Hence, the correct answer is FINICX.

Given,

The above-given figure is embedded in

 

Hence, the correct answer is option 4.

Given,

The opposite faces are,

 

Hence, the correct answer is 1.

Given,

A denotes mangoes, B denotes bananas, C denotes apples.

Here we see only 31 persons like only Bananas.

Hence the correct answer is 31.

Given,

213, 217, 233, 269, ?

The pattern followed here is,

Hence, the correct answer is 333.

Given,

The pattern followed here is, all the symbols are moving alternative above and below the arrow, and the number of dots, triangles is increasing alternatively.

Therefore, the image in the place of the question mark (?) is

 

Hence, the correct answer is option 2.

 

Given expression, 15 @ 2 ÷ 900 & 30 # 10 = ?

∴ After replacing the operators by their meaning, we get:

15 × 2 + 900 ÷ 30 - 10

= 15 × 2 + 30 - 10

= 30 + 30 - 10 = 50

Hence, the correct answer is 50.

Given,

126, 217, 344, ?

The pattern followed here is,

Hence, the correct answer is 513.

Given,

P is the brother of Q. R is the daughter of Q. S is the sister of P. Q is the sister of S. T is the brother of R.

The family tree is as follows,

Hence, P is the uncle of T.

In the mirror image, the left and the right part of the image changes and top and the bottom part of the image remains the same.

So, the mirror image is,

Hence, the correct answer is option 4.

Given data:

LC = 6, CD = 11, LB = 4, and AB = x

Formula used:

LC × LD = LB × AL

Solution:

According to the problem:

LC × LD = LB × AL

6 × (6 + 11) = 4 × (4 + x)

⇒ 4 + x = 51/2

⇒ 4 + x = 25.5

⇒ x = AB = 21.5

∴ The length of AB is 21.5 cm.

Given :

The dealer marks goods by 30% above the cost price 

He gives a discount of 35% while selling. 

Concept used :

Marked price = cost price + increment on cost price 

Selling price = Marked price - discount on marked price 

Calculations :

Let the cost price be 100x 

Marked price = 100x + 30% of 100x 

⇒ 130x 

Selling price = 130x - 35% 0f 130x 

⇒ 84.5x 

Required loss percent = (Cost price - selling price)/cost price) × 100

⇒ (100x - 84.5x)/(100x) × 100 

⇒ 15.5% 

∴ The loss percent will be 15.5.

Given :

The difference between two numbers is 43 and their product is 50

Calculations :

Let the numbers be x and y 

According to the question 

x - y = 43 

xy = 50 

Now squaring (x-y) 

(x - y)² = x² + y² - 2xy 

x2 + y2 = (x - y)² + 2xy 

⇒ (43)² + 2 × 50 

⇒ 1849 + 100 

⇒ 1949 

∴ The Correct answer will be option 2.

Given :

The perimeter of the rectangle is 50 cm 

The ratio of area of the rectangle to the length is 5 : 1 

Concept used :

Perimeter of the rectangle = 2(Length + Breadth)

Area of the rectangle = Length × Breadth 

Calculations :

Let the length of the rectangle be 'L'

Let the breadth of the rectangle be 'B' 

Area of the rectangle = L × B 

⇒ 2(L + B) = 50 

⇒ L + B = 25 

According to the question 

⇒ (L × B) : L = 5 : 1

⇒ (L × B)/L = 5/1

⇒ L × (25 - L) = 5L     (B = 25 - L)

⇒ 25L - L² = 5L 

⇒ L = 20 

∴ The length of the rectangle is 20 cm.

Given :

Two sides of the triangle are 3 cm and 8 cm respectively 

Concept used :

Sum of length of two sides is greater than the third side in a triangle 

Calculations :

Let the third side be 'x' cm 

Now for 1st condition 

3 + x > 8 

⇒ x > 5 

For condition 2nd 

3 + 8 > x 

⇒ x < 11 

Values of 'x' concluded

⇒ 5 < x < 11

∴ The correct answer will be option number 4.

Calculations :

Use above given table to solve this problem 

Solving numerator first 

132 ÷ 12 × x - 3 × 3 

⇒ 11 × x - 9

⇒ 11x - 9 

Now solving denominator 

5² - 6 × 4 + x²

⇒ 25 - 6 × 4 + x² 

⇒ 25 - 24 + x²

⇒ x² + 1 

Now according to the question 

(11x - 9)/(x² + 1) = 1 

11x - 9 = x² + 1 

x² + 1 + 9 - 11x = 0

x² - 11x + 10 = 0 

⇒ x² - 10x - x + 10 = 0 

⇒ x.(x - 10) -1(x - 10) = 0 

⇒ (x - 1).(x - 10) = 0 

⇒ x = 1 or 10 

But x < 10 

So, 

⇒ x = 1 

∴ The value of x will be 1.

Mistake Points x + y = 4, y + z = 5, z + x = 6

So,

x + y + z = 15/2 = 7.5

We know that 

x3 + y3 + z3 - 3xyz = (x + y + z) × [(x + y + z)2 – 3(xy + yz + zx)]

⇒ 7.5 × [7.5² - 3(2 + 3 + 4)]

⇒ 7.5 × (56.25 - 27)

⇒ 7.5 × 29.25

⇒ 219.375

But this was not the option in the real exam we have to ignore it.

Given :

If x + y = 4, xy = 2, y + z = 5, yz = 3, z + x = 6 and zx = 4

<br>

Formula used :

x³ + y³ + z³ - 3xyz = (x + y + z) × (x² + y² + z² – xy – yz – zx)

(x + y)² = x² + y² + 2xy

<br>

Calculations :

x + y = 4, y + z = 5, z + x = 6

So,

x + y + z = 15/2 = 7.5

xy + yz + zx = 2 + 3 + 4 = 9

Now,

(x + y)² = x² + y² + 2xy

x² + y²  = 16 – 4             ....(2xy = 4)

⇒ 12

(y + z)² = y² + z² + 2yz

y² + z² = 25 – 6                 ....(2yz = 6)

⇒ 19

(x + z)² = x² + z² + 2xz

x² + z²  = 36 – 8                ....(2zx = 8)

⇒ 28

So,

2x² + 2y² + 2z² = 12 + 19 + 28 = 59

x² + y² + z² = 29.5

Now,

x³ + y³ + z³ - 3xyz = (x + y + z) × (x² + y² + z² – xy – yz – zx)   

⇒ (7.5) × (29.5 – 9)

⇒ 7.5 × 20.5

⇒ 153.75

<br>

∴ The correct value will be 153.75​.

Note : This question is incorrect in the official paper and we have made changes accordingly to satisfy options.

There can be multiple answers but we have to choose the correct answer from the given options.

Other answer to the same question is 219.375 with a formula given below.

x3 + y3 + z3 - 3xyz = (x+y+z)((x+y+z)² - 3(xy+yz+zx))

Given :

Ratio of two numbers is 4 : 7 

Calculations :

Let the number added to denominator and numerator be 'x' 

Now according to the question 

(4 + x)/(7 + x) = 2 : 3 

⇒ 12 + 3x = 14 + 2x 

⇒ x = 2 

∴ 2 will be added to make the term in the ratio of 2 : 3.

Given :

M is the midpoint of the triangle ABC 

Concept used :

The area of two triangles is directly proportional to their base if they have the same height. 

Calculations :

Area of the ∆ABM = (1/2) × (BM × AM) 

⇒ (1/2) × (BM × AM) = 18 

⇒ BM × AM = 36

Now

Area of ∆ABC = (1/2) × (BC × AM) 

⇒ (1/2) × (2 × BM × AM)   (BC = 2 BM because M is the mid point) 

⇒ BM × AM     

⇒ 36 

∴ The area of the triangle ABC is 36 cm²

Concept used :

Cost per unit weight = Total cost/Total weight 

Calculations :

Cost per tonne for the year 2005 = 150/100 = 1.5 cr

Cost per tonne for the year 2006 = 150/75 = 2 cr

Cost per tonne for the year 2007 = 330/150 = 2.2 cr

Cost per tonne for the year 2008 = 400/160 = 2.5 cr

Cost per tonne for the year 2009 = 500/200 = 2.5 cr

∴ Minimum value per tonne is in the year 2005

Given :

X and Y together can finish a piece of work in 15 days, while Y alone can finish it in 40 days.

Concept used :

Number of working days = Total work/Work done per day 

Calculations :

Total work = LCM of 15 and 40 

⇒ 120 units 

Now,

X and Y per day work = 120/15 

⇒ 8 units 

Y's per day work = 120/40 

⇒ 3 units 

X's per day work = 8 - 3 

⇒ 5 units 

Total working days for X = 120/5 

⇒ 24 days 

∴ Total working days for X will be 24.

Calculations :

Rise of deaths for all weeks 

From 30 June to 7 July = 180 - 142 = 38 deaths 

From 14 July to 21 July = 155 - 145 = 10 deaths 

From 21  July to 28 July = 160 - 155 = 5 deaths 

From 4 August to 11 August = 165 - 150 = 15 deaths 

We can see that greatest rise is from 30 June to 7 July 

∴ The correct answer will be option 2

Given :

(cos 30° - sin 30°)/(sin 60° + cos 60°) 

Formula used :

Cos 30° = sin 60° = √3/2

cos 60° = sin 30° = 1/2 

Calculations :

Putting all values in the equation 

[(√3/2) - (1/2)]/[(√3/2) + (1/2)] 

⇒ (√3 - 1)/(√3 + 1)

Now rationalising 

⇒ [(√3 - 1)/(√3 + 1)] × [(√3 - 1)/(√3 - 1)]

⇒ (√3 - 1)²/2 

⇒ (3 + 1 - 2√3)/2 

⇒ (4 - 2√3)/2 

⇒ 2 - √3 

∴  Option 1 will be the correct answer.

Given : 

Sachin's income is 25% more than Dileep's.

Calculations :

Let the income of Dileep be 100x 

Sachins's income = 100x + 25% of 100x

⇒ 125x 

Now, 

Required percent = (Sachin's income - Dileep's income)/(Sachin's income) × 100 

⇒ (125x - 100x)/(125x) × 100 

⇒ (25x/125x) × 100

⇒ 20% 

∴ Correct answer is option 2.

Given :

Sohan sold his plot at 15% loss for 255000 rupees 

Formula used :

Selling price(at profit) = Cost price + Profit on cost price 

Selling price(at loss) = Cost price - loss on cost price 

Calculations :

Let the cost price be 'C' 

According to the question 

Selling price = C - 15% of C 

255000 = C - 15% of C 

⇒ C = 300000 rupees 

Now Selling price at 10% profit 

Selling price = 300000 + 10% of 300000

⇒ 300000 + 30000 

⇒ 330000 rupees 

∴ Selling price at 10% profit will be Rs 330000.

Given :

A batsman in his $11^{th}$ innings makes a score of 77 runs, thereby increasing his average scores by 3.

Formula used :

Average = Total value of all observations/Number of observations 

Calculations :

Let the average score per match up to 10 matches be 'x' 

Total score up to 10 matches = 10 × x = 10x 

Total score up to 11 matches = 10x + 77 

Now according to the question 

(10x + 77)/11 = x + 3 

⇒ 10x + 77 = 11x + 33 

⇒ x = 44 

Average score after 11th innings = x + 3 

⇒ 44 + 3 

⇒ 47 

∴ His average after 11th innings will be 47 runs

Given : 

cosec θ + cot θ = 2 

Formula used :

cosec²θ - cot²θ = (cosec θ + cot θ)(cosec θ - cot θ) = 1 

Calculations :

cosec θ + cot θ = 2       ....(1)

cosec θ - cot θ = 1/2     ....(2)

Solving equation 1 and 2 , we get 

cosec θ = 5/4 

⇒ sinθ = 4/5           (sin θ = (1/cosec θ)

∴ sin θ is equal to 4/5.

Given :

a + b = 5 and a³ + b³ = 20

Formula used :

(a + b)³ = a³ + b³ + 3ab(a + b)

(a² + b²)² = a⁴ + b⁴ + 2a²b²

Calculations :

(a + b)³ = a³ + b³ + 3ab(a + b)

5³ = a³ + b³ + 3ab(5)

⇒ 3ab(5) = 125 – 20

⇒ ab = 7

Now,

(a + b)² = a² + b² + 2ab

⇒ 5² =  a² + b² + 2 × 7

⇒ a² + b² = 25 – 14 = 11

So,

(a² + b²)² = a⁴ + b⁴ + 2a²b²

11² = a⁴ + b⁴ + 2 × 49

⇒ a⁴ + b⁴ = 121 – 98

⇒ 23

∴ The value of a⁴ + b⁴ is equal to 23.

Given :

Sec²θ – 3sec θ + 2 = 0

Calculations :

Sec²θ – 3sec θ + 2 = 0

Sec²θ – 2sec θ – sec θ  + 2 = 0

Secθ (sec θ – 2) – 1(sec θ – 2) = 0

⇒ (sec θ – 1) (sec θ – 2) = 0

⇒ sec θ = 1 and 2

But θ is between 0° and 90°

So,

Sec θ = 2

⇒ θ = 60°

∴ θ will be 60°

Calculations :

For village A = 10% 

For village C = 20% 

For village E = 30% 

∴ There are 3 villages which at most or 30% or less non-electrified villages.

Calculations :

Fall in number of deaths for different years 

For 7 July to 14 July = 180 - 145 = 35 

For 28 July to 4 August = 160 - 150 = 10 

We can conclude the greatest fall in deaths is from 7 July to 14 July 

∴ The correct answer will be option 1.

Given :

A 5 cm long perpendicular is drawn from the centre of a circle to a 24 cm long chord

Concept used :

The line is drawn from the centre of a circle towards a chord always divides the chord in two equal parts and also perpendicular to the chord. 

Calculations :

Let the centre of the circle be 'O' and 'OC' is the radius 

Let the chord be 'AB' where 'M' is the midpoint of the chord.

Length of chord AC is 24 cm so MC is equal to 12 cm

Now according to the question 

OC² = OM² + MC²

OC² = 5² + 12²

OC² = 25 + 144 

OC² = 169 

⇒ OC = √169 

⇒ 13 

Now, 

Diameter of the circle = 2 × Radius 

⇒ 2 × 13 

⇒ 26 cm 

∴ The diameter of the circle is 26 cm.

Calculations :

7⁸¹ + 7⁸² + 7⁸³

⇒ 7⁸¹ (1 + 7 + 7²)

⇒ 7⁸¹ (57)

So the number must be multiple of 19, 3, and 7 to divide this number.

From all options, only 399 is multiple of 19, 3, and 7. 

∴ 399 will divide 7⁸¹ + 7⁸² + 7⁸³ completely.

Shortcut Trick

Difference in Time = 10 years − 8 years = 2 years.

Effective Interest Rate difference = 2 years × 10% = 20%.

Given that 20% of the Principal (Sum) = ₹ 200.

Sum (100%) = (200 ÷ 20) × 100 = ₹ 1,000.

∴ The correct answer is ₹ 1,000.

Alternate Method

Given:

Difference in Simple Interest (SI) = ₹ 200

Rate of Interest (R) = 10% p.a.

Time periods: T₁ = 8 years and T₂ = 10 years

Formula Used:

Simple Interest (SI) = (P × R × T) ÷ 100

Calculations:

⇒ SI₁₀ − SI₈ = 200

⇒ [(P × 10 × 10) ÷ 100] − [(P × 10 × 8) ÷ 100] = 200

⇒ (100P ÷ 100) − (80P ÷ 100) = 200

⇒ P − 0.8P = 200

⇒ 0.2P = 200

⇒ P = 200 ÷ 0.2

⇒ P = 1000

∴ The correct answer is ₹ 1,000.

Additional Information

Simple Interest Difference Rule

When the principal and rate are constant, the difference in interest is directly proportional to the difference in time: SI_diff = P × R × (T₂ − T₁) ÷ 100.

Total Amount Formula

The total amount (A) after T years is the sum of Principal (P) and Simple Interest (SI): A = P + (P × R × T ÷ 100) = P(1 + RT ÷ 100).

Effective Rate of Interest

The effective interest for a period is the product of the annual rate and the number of years (R × T) expressed as a percentage of the principal.

Shortcut Trick

When the distance traveled is the same (X to Y and Y to X), Average Speed = [2 × a × b] ÷ [a + b].

Average Speed = [2 × 20 × 25] ÷ [20 + 25] = 1000 ÷ 45.

Average Speed = 200 ÷ 9 = 22 2/9 km/h.

∴ The correct answer is 22 2/9 km/h.

Alternate Method

Given: Speed from X to Y (v₁) = 20 km/h, Speed from Y to X (v₂) = 25 km/h.

Formula Used: Average Speed = Total Distance ÷ Total Time

⇒ Let the distance between X and Y be the LCM of 20 and 25, which is 100 km.

⇒ Time taken from X to Y (t₁) = 100 ÷ 20 = 5 hours.

⇒ Time taken from Y to X (t₂) = 100 ÷ 25 = 4 hours.

⇒ Total distance = 100 + 100 = 200 km.

⇒ Total time = 5 + 4 = 9 hours.

⇒ Average Speed = 200 ÷ 9 = 22 2/9 km/h.

∴ The correct answer is 22 2/9 km/h.

Additional Information

Average Speed for Equal Time

If a person travels for equal time intervals at speeds v₁ and v₂, then the Average Speed = (v₁ + v₂) ÷ 2.

Relative Speed

When two objects move in opposite directions, their relative speed is the sum of their individual speeds (u + v). When in the same direction, it is the difference (u − v).

Average Speed for Three Equal Distances

If three equal distances are covered at speeds a, b, and c, then Average Speed = (3 × a × b × c) ÷ (ab + bc + ca).

The correct answer is Mizoram.

Important Points

• The Sixth Schedule consists of provisions for the administration of tribal areas in the states of Assam, Meghalaya, Tripura, and Mizoram, in accordance with Article 244 of the Indian Constitution.
• Passed by the Constituent Assembly in 1949, it aimed at the establishment of Autonomous District Councils (ADC), which seek to protect the interests of the tribal community.
• ADCs are bodies serving a district within the state legislature to which the Constitution has granted varying degrees of autonomy.
• These states' governors are empowered to reorganize the tribal areas' borders.
• She or he can choose to include or exclude any region, increase or decrease the limits, and unite two or more autonomous districts into one.
• They may also, without separate legislation, modify or change the names of autonomous regions.

Additional Information

• Mizoram is a state in northeastern India, with Aizawl as its seat of government and capital city.
• Total area: 21,081 km²
• Total population: 1,091,014
• Official language: Mizo, English, and Hindi

The correct answer is Mohanlal Viswanathan.

Important Points

• The Padma Bhushan is the third-highest civilian award in the Republic of India and is granted in any field to acknowledge distinguished service of a high order to the country.
• Padma Bhushan, in the hierarchy, comes after Bharat Ratna and Padma Vibhushan, but before Padma Shri.
• Announced annually on the occasion of National Republic Day, it is conferred by the President of India at a function held sometime around March/April at Rashtrapati Bhavan.
• Mohanlal Viswanathan (born 21 May 1960) was awarded the Padma Bhushan in 2019 along with several other personalities.
• Mohanlal Viswanathan is an Indian actor, producer, playback singer, distributor and philanthropist, known mononymously as Mohanlal, who predominantly works in Malayalam cinema.
• Mohanlal, one of the most admired Indian actors, has had a prolific career spanning over four decades, in which he has appeared in over 340 films.
• He has also appeared in other regional Indian films, in addition to Malayalam.

Mohanlal

The correct answer is 16 September.

Important Points

• A fragile shield of gas, the ozone layer, protects the Earth from the harmful portion of the sun's rays, thus helping to preserve life on the planet.
• September 16 was designated as the International Day for Ozone Layer Preservation by the United Nations General Assembly.
• In 1994, the United Nations General Assembly declared the International Day for the Protection of the Ozone Layer on 16 September, commemorating the signing, in 1987, of the Montreal Protocol on Substances that Deplete the Ozone Layer.
• Governments, scientists, and industry worked together to cut 99 per cent of all ozone-depleting compounds under the Convention's Montreal Protocol.
• The ozone layer is recovering, thanks to the Montreal Protocol, and is predicted to return to pre-1980 levels by mid-century.
• Held on the 16th of September, World Ozone Day honours this achievement.
• It shows that the only way to address major global problems is through joint decisions and action, driven by science.
• We were reminded by the slogan of World Ozone Day 2020, "Ozone for life" that not only is ozone vital to life on Earth, but we must continue to protect the ozone layer for decades to come.

Ozone hole

The correct answer is Jinson Johnson.

Important Points

• Jinson Johnson (born 15 March 1991) is an Indian middle-distance runner and Junior Commissioned Officer (JCO) of the Indian Army who specializes in the 800 and 1500 meter events.
• At the 2015 Asian Athletics Championships in Wuhan, Johnson won the silver medal in the 800-meter race with a time of 1:49.69.
• At the Asian Grand Prix in Thailand the same year, he also won three gold medals.
• By clocking his personal best time of 1:45.98 in Bangalore in July 2016, Johnson qualified for the 800-meter event at the 2016 Summer Olympics, meeting the Olympics qualification standard of 1:46.00.
• In June 2018, Johnson broke Sriram Singh's long-standing national record of 800 meters when he clocked a time of 1:45.65 secs in the Inter-State Senior Athletics Championships.
• He finished fifth in the 2018 Commonwealth Games, setting a new national record in the 1500-metre race by shattering Bahadur Prasad's 23-year-old record.
• Later in 2018, at the Asian Games in Jakarta, Indonesia, with a time of 3:44.72 in the final event, as well as a silver medal in 800 meters, he went on to win the gold medal in the men's 1500m.

                Jinson Johnson

The correct answer is Kapurthala.

Important Points

• Kapurthala Rail Coach Factory is a coach manufacturing unit for the Indian Railways, located in the state of Punjab.
• It is located on the Jalandhar-Firozpur railway line.
• Established in 1986, RCF has manufactured more than 30,000 passenger coaches of various types, including self-propelled passenger vehicles, making up more than 50% of the total Indian Railway coach population.
• It is a production unit with a per-year target of 1025 coaches.
• This production accounts for over 35 per cent of the total Indian Railway coach population.
• In the financial year 2013-14, the Rail Coach Factory (RCF) generated a record number of coaches as it achieved the mark of 1701 coaches against an installed capacity of 1500 per annum.
• RCF manufactured 23 different coach variants for high-speed trains such as Rajdhani, Shatabdi, double-decker, and other trains during the year.
• A highly cost-effective indigenous technology for the treatment of biowaste in coaches was also developed by the factory in association with DRDE.
• In 2013–14, approximately 2096 bio-toilets were installed.
• Linke-Hofmann-Busch (LHB) coaches have already been exported by the factory to Southeast Asian and African countries with Metre Gauge rail networks and the experience of Indian Railways in Meter Gauge rolling stock has proven handy in serving these markets.

Railways coach factory, Kapurthala

​

The correct answer is Gerusoppa.

Important Points

• Jog Falls, Gerosoppa Falls, or Jogada Gundi Falls, situated in Sagara taluk in Karnataka, is India's second-highest plunge waterfall (after the Nohkalikai Falls).
• It is situated on the boundary between the Shimoga and Uttara Kannada districts.
• Jog Falls, formed by the Sharavati River dropping from a height of 253 meters, is a massive waterfall 30 km (19 mi) downstream (829 ft) with an elevation of 488 meters.
• Jog Falls is India's highest untiered waterfall i.e. it drops directly and does not stream onto rocks.
• It generates 30% of the electricity for the state of Karnataka.
• The Falls were discovered by British explorers 150 years ago.
• Jog Falls is three times higher than the Niagara Falls in the United States.
• The water flow rate is 153 m³/s or 5,387 cu ft/s.

                  Jog falls in Karnataka

Hogenakkal Falls:

• Hogenakkal Falls is a waterfall in South India on the Kaveri river on the border between Dharmapuri district of Tamil Nadu and Chamrajnagar district of Karnataka.
• It is sometimes referred to as the "Niagara Falls of India,".
• It is known for bathing areas and hired boat rides and is a major tourist attraction.

Soochipara Falls:

• Soochipara Falls also known as Sentinel Rock Waterfalls is a three-tiered waterfall in Vellarimala, Wayanad, India.
• It is surrounded by deciduous, evergreen and montane forests.

Athirappilly Falls

• Athirapplu Falls is situated in Athirappilly Panchayat, Chalakudy Taluk, Thrissur District of Kerala, India on the Chalakudy River,.
• This river originates from the upper reaches of the Western Ghats at the entrance to the Sholayar ranges. It is the largest waterfall in Kerala, which stands tall at 80 feet.

The correct answer is Majuli island.

Important Points

• The Guinness Book of World Records has named Majuli as the world's largest river island.
• The beautiful river island is located on the River Brahmaputra in Assam.
• It is formed by the Brahmaputra River in the South, and Kherkutia Xuti, an anabranch of Brahmaputra, joined by the Subansiri River in the north.
• The island is populated by the Mising, Deori, and Sonowal Kachri tribes.
• The people of the island speak the languages of Mising, Assamese, and Deori.
• It is home to about 1,60,000 individuals and is a hub of neo-Vaishnavite Assamese culture.
• It covers about 880 sq km of land and is one of Assam's popular tourist destinations.
• Majuli suffers from heavy erosion due to the regular flooding of the Brahmaputra river.
• It is estimated that it has lost approximately one-third of its territory in the last 30-40 years due to erosion.
• It was recently declared a district and was previously a subdivision under the district of Jorhat.
• It has also been included in the tentative list of UNESCO's World Heritage Sites.

Majuli island

The correct answer is Sourav Ganguly.

Important Points

• Sourav Chandidas Ganguly, affectionately known as Dada, is the 39th and current president of the Board of Control for Cricket in India, an Indian cricket administrator, commentator, and former national cricket team captain.
• On October 23, 2019, Ganguly became the 39th BCCI president, thus ending the 33-month reign of the Supreme Court-appointed Committee of Administrators (CoA) to run the cricket board's daily affairs.
• Sourav Ganguly is only the second cricketer from India to become the president of the BCCI.
• Ganguly, who played 113 tests and 311 one-day internationals and led India to 21 test wins, has already been an administrator for the Cricket Association of Bengal, his home state association (CAB).
• In the past, he was part of the BCCI's technical panel and also, alongside Sachin Tendulkar and VVS Laxman, part of a three-member Cricket Advisory Committee.

Sourav Ganguly

The correct answer is 79^th.

Important Points

• Sachin Ramesh Tendulkar is a former international Indian cricketer who served as the Indian national team's captain.
• He is widely known in the history of cricket as one of the greatest batsmen.
• In International Cricket, he is the top running scorer of all time.
• On September 9, 1994, five years after his ODI debut, the former Indian cricketer Sachin Tendulkar scored his first ODI century in his 79th ODI match.
• Sachin scored 110 (130) in Colombo, opening the innings against Australia, before registering three consecutive ducks in his next three ODI innings.
• As India won by 31 runs, his innings played a key role in the side's victory in the match.
• The Player of the Match award was also given to Tendulkar for his knock that was studded with two sixes and eight fours.
• Sachin then went on in his ODI career to score 49 hundred.

Sachin Tendulkar in his 79th ODI match

The correct answer is Vitamin C. 

Key Points

• Vitamin C is a water-soluble vitamin.
• it is necessary for normal growth and development.
• Water-soluble vitamins dissolve readily in water.
• Leftover vitamin quantities leave the body through the urine.

Additional Information

• Vitamin C, also known as L-ascorbic acid, is a water-soluble vitamin that is naturally found in certain foods, added to others, and also available as a dietary supplement.
• The best sources of vitamin C are fruits and vegetables.
• The primary contributors to vitamin C are citrus fruits, tomato and tomato juice, and potatoes.
• Since ascorbic acid is water-soluble and is damaged by heat, the vitamin C content of food may be decreased by prolonged storage and cooking.
• Acute Vitamin C deficiency can lead to a disease called Scurvy.

Sources of Vitamin C

The correct answer is 3.8 tonne.

Important Points 

• Chandrayaan-2, one of the most ambitious lunar missions of India designed by the Indian Space Research Organization (ISRO) was launched on 22nd July 2019 from Satish Dhawan Space Center, Sriharikota.
• Chandrayaan-2 is India's second lunar mission and the first attempt to make a soft landing in the South Polar Area of the Moon.
• The Chandrayaan-2 has a total weight of 3,850 kg (8,490 lb).
• The mission's overall cost was roughly US$141 million.
• Chandrayaan-2 was originally expected to be launched in 2011 and was intended to carry a Russian-made lander and rover. As Russia pulled out, ISRO had to build its own lander and rover, resulting in delays.
• Chandrayaan-2's primary aim is to chart the location and availability of lunar water.
• The project also intends to research the lunar topography, mineralogy, lunar exosphere, and elemental abundance.
• India became the fourth nation to soft-land on the lunar surface with Chandryaan-2.

  Chandrayaan-2

The correct answer is D Gukesh.

Important Points

• Dommaraju Gukesh (born 29 May 2006), commonly referred to as Gukesh D, is a chess player from India.
• He is the second youngest person in history to be given the title of Grandmaster by FIDE in March 2019.
• At 12 years, 7 months and 17 days, D. Gukesh became India's youngest Grandmaster on 15 January 2019.
• With this accomplishment, Gukesh has overtaken Praggnanandhaa, who holds the record in June 2018 at 12 years and 10 months.
• In the Under 12 category, Gukesh won the Under-9 division of the Asian School Chess Championship in 2015 and the World Youth Chess Championship in 2018.
• At the 2018 Asian Youth Chess Championships, he also won five gold medals, in the U-12 individual rapid and blitz, U-12 team rapid and blitz, and the U-12 classical individual formats.
• In March 2018, at the 34th Cappelle-la-Grande Open, he completed the criteria for the title of International Master.
• As the youngest grandmaster ever, Gukesh nearly surpassed Sergey Karjakin but missed the record by 17 days.

Gukesh D

The correct answer is 80.

Key Points 

• A member of Parliament in the Lok Sabha represents the voice of the Indian people in the Lok Sabha, the lower house of Parliament in India.
• Members of the Lok Sabha legislature are elected by direct elections based on adult suffrage for 5 years.
• With two houses, the Parliament of India is bicameral; consisting of the Rajya Sabha (upper house i.e. Council of States) and Lok Sabha (lower house i.e. House of the People).
• In the Lok Sabha, the highest allowed strength of members of parliament is 552 of these, 543 members are directly elected by the people from single-member constituencies, while the President of India can nominate up to two members from the Anglo-Indian community if deemed necessary for representation.
• The faction, or alliance of parties, with a majority in the Lok Sabha, selects India's Prime Minister.
• The state of Uttar Pradesh is currently represented by the strength of 80 members in the Lok Sabha.

Additional Information

• Uttar Pradesh is a state in Northern India.
• With approximately 200 million people, it is India's most populous state and the world's most populous subdivision of countries.
• Capital: Lucknow
• Chief Minister: Yogi Adityanath (BJP)

The Lok Sabha

Important Points

• The reservation for the Anglo-Indian community in the Lok Sabha was abolished with the 104th Constitutional Amendment Act, 2019.
• As a result, there are no longer nominated seats for Anglo-Indian members in the Lok Sabha.

The correct answer is PMVVY.

Important Points

• In May 2017, the Government of India introduced a pension scheme for senior citizens i.e. Pradhan Mantri Vaya Vandan Yojana and implemented through Life Corporation of India.
• In this scheme, a guaranteed return of 8% per annum, payable monthly is assured on payment of minimum Rs. 1.5 lakh initially for Rs. 1000 per month pension to a maximum of Rs. 7.5 lakh initially for Rs. 5000 per month pension.
• It also offers a death benefit.

Additional Information

PMGAY: Pradhan Mantri Gramin Aawas Yojana

• It aims to provide houses to people living in rural India.
• It was previously known as Indira Aawas Yojana launched in 1985 by the then Prime Minister of India Rajiv Gandhi.
• This Yojana now aims to provide houses to all by 2022.

PMGSY: Pradhan Mantri Gram Sadak Yojana

• Launched to provide road connectivity to the unconnected part of the country to eradicate poverty.
• Under this yojana, 3.71 lakh km road will be constructed to connect 1.67 lakh unconnected habitations and 3.68 lakh km roads will be upgraded.

PMMVY: Pradhan Mantri Matru Vandana Yojana

• Introduced in 2017 by Ministry of Women and Child Development which involves financial aid to pregnant and lactating women having age of 19 years or above as women generally suffer wage loss during the time of childbirth and childcare.

Mistake Points

• PMVVY is only for people of age 60 years or above.
• No medical certificate is required to opt for this scheme.

The correct answer is Half Byte.

• Nibble is also known as half-byte or tetrade and has sixteen possible values represented by a hex digit.
• It is used to state the memory consumption to store a digit in packed decimal format within an IBM mainframe to enhance the computation and the process of debugging.

Important Points

Unit Conversion Table:

• 4 bit = 1 Nibble
• 8 bit = 1 byte
• 1 KB (kilobyte) = 1024 byte
• 1 MB (megabyte) = 1024 KB
• 1 GB (gigabyte) = 1024 MB
• 1 TB (terabyte) = 1024 GB
• 1 PB (petabyte) = 1024 TB
• 1 XB (Exabyte) = 1024 PB
• 1 ZB (zettabyte) = 1024 XB
• 1 YB (yottabyte) = 1024 ZB

Key Points

• Decimal value of 10 in 8-bit byte system = 00001010 = 0 × 2⁰ + 1 × 2¹ + 0 × 2² + 1 × 2³ + 0 × 2⁴ + 0 × 2⁵ + 0 × 2⁶ + 0 × 2⁷ = 2 + 8 = 10
• Decimal value of 10 in 4-bit nibble system = 1010

Mistake Points

• In data communication, Nibble is known as Quadbits.
• The smallest unit of information which can be stored is called as Bit.
• A single bit can only hold 1 or 0.