SSC CHSL Previous Paper 37 (Held On: 20 March 2018 Shift 3) (Previous Year Paper)

The correct answer is 2. 

Key Points

Reading the above sentence we find that:

• The error lies in the second part of the sentence.
• From the context of the sentence, we can infer that the person has already visited the places.
• Therefore the given sentence is in the past tense.
• Thus the verb visit in the second part is wrong and should be changed to visited.
• The verb visited makes the sentence grammatically correct.

Therefore from the above points we can conclude that the correct answer is 2 as the error lies in the second part. 

The correct sentence will be: Of all the forts that I've visited in India, Daulatabad Fort is my favourite.

The correct answer is 2. 

Key Points

Reading the above sentence we find that:

Whether is used incorrectly in the given sentence. 

Important Points 

• Whether can be used only when two contrasting conditions are explicitly mentioned.
• Example: Whether he will go or not.
• In the given sentence we don't have two contrasting conditions.
• Therefore the correct word to be used here is if.

Thus from the above points we can conclude that the error lies in part 2 of the sentence and therefore it is the correct answer. 

The correct sentence will be: The Bench will also have to say if the laws are really at consonance with the basic tenets of the 1960 Act.

The correct answer is Is a.

Key Points

Reading the above sentence we find that: 

• We are defining a paragraph and definitions are fixed.
• When we are talking about something that is fixed like a definition we express it in the present tense with certainty.
• Thus the correct option meeting these requirements is 'Is a.'

Thus from the above points, we can conclude that the correct answer is Is a. 

The correct sentence will be: A paragraph is a number of sentences grouped together.

It expresses a condition which is doubtful or not factual (like: If I were the Prime Minister). In such cases, we use were with If. Option 4) were in is the correct answer.

The correct answer is- 'Quaff'

Key Points

• 'Carouse' is a verb and it means 'to enjoy yourself by drinking alcohol and speaking and laughing loudly in a group of people' so that the similar word of 'Carouse' is 'Quaff'. It is the most suitable option here. 
• Example: We'd been up carousing till the early hours and were exhausted.
• 'Quaff' is a verb and it means drink (something, especially an alcoholic drink) heartily; to drink something quickly or in large amounts.
• Example: He quaffed pint after pint of good Berkshire ale.
• Hence option 1 is the most appropriate answer here.

Additional Information

The correct answer is- 'Mild'

Key Points

• 'Clement' is an adjective and it means mild; inclined to be merciful.  
• Example: It's very clement for the time of year.
• Mild is an adjective and it means not severe, serious, or harsh.
• Example: She can't accept even mild criticism of her work.
• Hence option 4 is the most appropriate answer here.

Additional Information

The correct answer is- 'Truthfulness'

Key Points

• 'Artifice' is a noun and it means '(the use of) a clever trick or something intended to deceive' so that the opposite word of 'Artifice' is 'Truthfulness'. It is the most suitable option here. 
• Example: Amazingly for Hollywood, she seems almost entirely without artifice.

Hence option 1 is the most appropriate answer here

Additional Information

The correct answer is- 'Extinct'

Key Points

• 'Extant' is an adjective and it means 'used to refer to something very old that is still existing (मौजूदा)' so that the opposite word of 'Extant' is 'Extinct'. It is the most suitable option here. 
• Example: We have some extant parish records from the 16th century.
• ​Extinct: (used about a type of animal, plant, etc.) no longer existing (पशु, पौधे आदि की जाति) विलुप्‍त, अविद्यमान, लुप्तप्राय
• Example: Tigers are nearly extinct in the wild.

Hence option 1 is the most appropriate answer here

Additional Information

Believe of = grammatically incorrect phrase. Believe in something or believe something would be correct. Thus, Q can't be first. Similarly, believe continue is incorrect too => only P can be first. Rule out 2) and 3). R can't be last since a sentence can't end with because =. rule out 4). Option 1) PRQ is the correct answer.

Sociologists believe that the reason why honour killings continue to take place is because of the continued rigidity of the caste system.

The correct answer is- 'Old spare parts are used for the car by the mechanic.'

Key Points

• In the given question the sentence 'The mechanic uses old spare parts for the car.' is in 'Active voice' which is in the present indefinite and we know that after converted this sentence into 'Passive voice' the tense will same also should in present indefinite.
• Struture Present indefinite:
• Sub + V1 + s/es + object (Active)
• Object + is/am/are + V3 + by + subject (Passive)
• Let's see the example:
• Reema cleans the floor (Active)
• The floor is cleaned by Reema (Passive)

Hence the correct sentence is- Old spare parts are used for the car by the mechanic.

No part of the information should be deleted in reported speech. Since the visitor is interested in knowing when i.e. time related, we can't eliminate that part => rule out 1) and 4). Simple present tense (when is) => simple past (was). option 2) The visitor enquired when the next train was is the correct answer.

Notice how was has been moved to the end of the sentence. It is usually done when you change a question to a statement.

The correct answer is- 'Acquitted'

Key Points

• 'Acquitted' is a verb and it means 'to decide officially in a law court that someone is not guilty of a particular crime'
• Example: She was acquitted of all the charges against her.

Here, the correct spelling is- Acquitted

The correct answer is- 'Simply'

Key Points

• Here, word 'obeys' is a verb. So, the blank must contain an adverb to describe the verb.
• 'Simply' is an adverb here. So, simply is the only possible choice.
• 'Simple' is an adjective here. So, it is not the correct answer.
• 'Simplification' and 'Simplicity' are nouns here. So, it is also not the correct answer.
• So, according to above explanation adverb 'Simply' is the correct answer.

Therefore, the correct sentence is- Left to itself, then, attention simply obeys natural laws.

Additional Information

• There are some words that end with '-ly' but are not adverbs.
• For example- Family, early, likely, supply, apply, daily, lovely, holy, rely, silly etc.

A comparison is being made. The sentence says that a large part is of this type. And that too by a big difference or amount. by far = a phrase used to imply this. By far = by a great amount. Option 1) By is the correct answer.

The correct answer is 'Nor'.

Key Points

• 'Nor' is used to connect two negative clauses in a sentence, creating a parallel negative structure without the need to repeat the negation word such as "not."
• In the given sentence structure, "conscious of effort" represents the first negative scenario. The conjunction 'Nor' effectively introduces the second negative component "struggle to compel us to cease thinking about this thing and begin thinking about that."
• The correct use of 'Nor' in this context highlights the absence of both effort and struggle, emphasizing that the flow of thoughts is undirected and effortless.
• This usage adheres to the correct grammatical rule for pairing negative constructs, where 'Nor' is the appropriate choice to link two ideas or conditions that are both lacking.
• The choice of 'Nor' facilitates a smooth and logical continuation of the idea being expressed in the sentence, ensuring clarity and coherence in the message about the nature of unforced attention and thought.
• The overall sentence with 'Nor' correctly filled in emphasizes how thought can proceed without conscious control or opposition, in a natural and unobstructed manner.

Therefore, the correct answer is 'Option 4'.

Additional Information

• 'No' is primarily used as a determiner or adverb but does not function correctly to connect two negative clauses.
• 'Not' is used to make a clause negative but cannot link two negative clauses in the way required for the sentence structure.
• 'None' is a pronoun referring to 'not one' or 'not any' and doesn't suit the structure that requires a conjunction.
• Understanding the correct use of 'Nor' in context is essential for proper sentence construction, especially in formal or written English where precision is crucial.

Cease = stop. Notice how the sentence is written. Stop thinking about this thing. If you actually stop thinking about this thing, you will start thinking about some other thing i.e that thing (vague). Option 4) That is the correct answer.

The correct answer is 'Whether'.

Key Points

• In this context a doubt is being expressed.
• Whether- used when someone does not know which of the two possibilities is true.
• For example- She asked me whether I was married.
• So, according to given explanation 'whether' is the correct option.

Therefore, the correct sentence is- be doubted whether this is not the case. 

Additional Information

• Let's see the uses of other options also.
• Weather- The state of the atmosphere at a particular place and time as regards heat, cloudiness, dryness, sunshine, wind, rain, etc.
• Wither- Fall into decay or decline.
• wether- Castrated male sheep or goat.

The correct answer is- 'Guarantee that funds allocated for a particular purpose will not be spent on anything else.'

Key Points

• 'Ring-fencing' is an idiom and it means 'to put restrictions on it so that it can only be used for a particular purposer'
• Example: The Treasury has now agreed to ring-fence the money to ensure that it goes directly towards helping elderly people.

Hence option 3 is the most appropriate answer here.

The correct answer is- 'Remain cheerful in difficult circumstances.'

Key Points

• 'Keep your chin up' is an idiom and it means 'to encourage someone not to give up or. give in, and remain cheerful despite a difficult situation.'
• Example: Keep your chin up! Things will get better soon.

Hence option 3 is the most appropriate answer here.

The correct answer is Option 1)

Explanation:

• Forfeited means a fine or penalty for wrongdoing
• Endow means give or bequeath an income or property to (a person or institution).
• Render means provide or give (a service, help, etc.)
• Assign means allocate (a job or duty)

​Thus, the correct answer is forfeited

Option 2) Exonerate (clear from a wrongdoing or crime) is the correct answer.

Indict = formally accuse of or charge with a crime.

Allege = laim or assert that someone has done something illegal or wrong, typically without proof.

Slur = speak (words) indistinctly so that the sounds run into one another.

Have or Are with he will be grammatically incorrect => rule out 1) and 2). The sentence is in the present tense => rule out 3). Option 4) No improvement is the correct answer

Here the correct answer is 'Soothes'.

Key Points

• Given sentence is in simple present tense.
• In this context it is said that music gives peace which helps to stroll on happily.
• The music is a singular noun so the correct verb will be soothes.

Therefore, the correct sentence is- The music soothes me and I stroll on happily.

Additional Information

• Soothe - gently calm (a person or their feelings); reduce pain or discomfort in (a part of the body).
• For Example - A shot of brandy might soothe his nerves.

The given part ends with an => only B can be first. Rule out 2) and 3). A sentence can't be ended with or => rule out 1). Option 4) BCA is the correct answer.

There is an instant rapport in the written communication which the printed message or a telephonic talk could never replicate.

The correct answer is- 'Bifurcated'

Key Points

• 'Bifurcated' is a verb and it means '(of roads, rivers, branches, etc.) to divide into two parts'
• Example: A sample of water was taken from the point where the river bifurcates.

Here, the correct spelling is- Bifurcated

Given → Saw : Carpenter

The pattern followed here is:-

Tool : Used by

Checking options one by one to find the related word pair.

As can be seen clearly from the above that Axe : Woodcutter follows the pattern and thus, is the related pair.

Hence, the correct answer is "Axe : Woodcutter".

Given → 69 : 87

The logic followed here is:-

First number + 18 = Second number

1. In 77 : 97 → 77 + 20 = 97

2. In 117 : 135 → 117 + 18 = 135

3. In 95 : 107 → 95 + 12 = 107

4. In 121 : 145 → 121 + 24 = 145

As can be clearly seen from the above that 117 : 135 follows the logic and thus, is the related pair.

Hence, the correct answer is "117 : 135".

The pattern followed:

In SQM : RPL,

S - 1 = R, Q - 1 = P, M - 1 = L

1. KCN : JBO, K - 1 = J, C - 1 = B, N + 1 = O

2. DQA : CPB, D - 1 = C, Q - 1 = P, A + 1 = B

3. BSU : ART, B - 1 = A, S - 1 = R, U - 1 = T

4. PYC : OXD, P - 1 = O, Y - 1 = X, C + 1 = D

Hence, the related letter pair is BSU : ART.

The logic followed here is:-

1)  Red → It is a colour.

2. Green → It is a colour.

3. White → It is a colour.

4. Painting → It is a practice of applying paint, pigment, color or other medium to a solid surface.

As can be established from the above that all are Colours except Painting and thus, Painting is the odd word among the given alternatives.

Hence, the correct answer is "Painting".

The logic followed here is:-

Number on the left side × 2 = Number on the right side

1. In 16 - 32

16 × 2 = 32

2. In 24 - 48

24 × 2 = 48

3. In 36 - 72

36 × 2 = 72

4. In 32 - 66

32 × 2 = 64 not 66

As can be established from the above that 32 - 66 is the odd one out from the given pairs as it doesn't follow the logic.

Hence, the correct answer is "32 - 66".

The pattern followed here is:-

1. In GEC

2. In NLJ

3. In OMK

4. In YWN

As can be established from the above that YWN doesn't follow the similar pattern and thus, is the odd one out.

Hence, the correct answer is "YWN".

The correct sequence of the given words as they would appear in an English dictionary is shown as follows:-

3. Climax
4. Climb
5. Clown
6. Clump
7. Clumsy

As can be seen from the above that the correct sequence of the given words is 35214.

Hence, the correct answer is "35214".

Patter followed in the series,

2 + 3 + 4 → 9

3 + 4 + 9 → 16

4 + 9 + 16 → 29

9 + 16 + 29 → 54

16 + 29 + 54 → 99

Hence, the missing number is 99.

The pattern followed in the given series:

E + 4 = I

I + 4 = M

M + 4 = Q

Q + 4 = U

U + 4 = Y

Hence, the missing term is Q.

Let the present ages of R and S be 3x and 2x respectively since their present age is in the ratio 3: 2.

R's present age is 4/13 of H's present age

i.e. 3x = 4/13 × 117

3x = 4 × 9

3x = 36

x = 12

Thus, the present age of R is 3 × 12 = 36 years.

The present age of S is 2 × 12 = 24 years.

Let the no. of years after which the ratio of the ages of R and S would be 15: 11 be z.

Age of R/Age of S = 15/11

36 + z/24 + z = 15/11

(36 + z) × 11 = 15 × (24 + z)

396 + 11z = 360 + 15z

4z = 396 - 360

4z = 36

z = 9

Hence, after 9 years, the ages of R and S would be in the ratio of 15: 11.

Given word → Represhensible

1. Repair → Represhensible → Cannot be formed (Letter 'a' is not present in the given word 'Represhensible')

2. Hen → Represhensible → Can be formed (all the letters are present so, the word 'Hen' can be formed)

3. Rise → Represhensible → Can be formed (all the letters are present so, the word 'Rise' can be formed)

4. Ripe → Represhensible → Can be formed (all the letters are present so, the word 'Ripe' can be formed)

Hence, the correct answer is "Repair".

The pattern followed here is:-

Each letter is represented by its positional value in alphabetical series.

FUMIC is coded as 6211393

F = 6, U = 21, M = 13, I = 9, C = 3

STEAM is coded as 19205113

S = 19, T = 20, E = 5, A = 1, M = 13

Similarly,

PROP is coded as 16181516

P = 16, R = 18, O = 15, P = 16

Hence, the correct answer is "16181516".

Given equation → 20 ÷ 12 - 30 + 10 × 10

After replacing the symbols with their meaning, we get:-

New equation → 20 × 12 ÷ 30 - 10 + 10

Now, after applying BODMAS Rule, we get:-

20 × 12 ÷ 30 - 10 + 10

20 × 0.4 - 10 + 10

8 - 10 + 10

18 - 10 = 8

Hence, the correct answer is "8".

Given equation → 32 ÷ 16 - 5 × 8 + 2 = 13

Checking options one by one by interchanging signs

1. • and ÷

After interchanging, new equation → 32 + 16 - 5 × 8 ÷ 2 = 13

By solving the equation using BODMAS Rule, we get:-

32 + 16 - 5 × 8 ÷ 2 = 13

32 + 16 - 5 × 4 = 13

32 + 16 - 20 = 13

48 - 20 = 13

28 ≠ 13

Left hand side is not equal to right hand side

2. • and ×

After interchanging, new equation → 32 ÷ 16 - 5 + 8 × 2 = 13

By solving the equation using BODMAS Rule, we get:-

32 ÷ 16 - 5 + 8 × 2 - 13

2 - 5 + 8 × 2 = 13

2 - 5 + 16 = 13

18 - 5 = 13

13 = 13

Left hand side is equal to right hand side

3. • and + 

After interchanging, new equation → 32 ÷ 16 + 5 × 8 - 2 = 13

By solving the equation using BODMAS Rule, we get:-

32 ÷ 16 + 5 × 8 - 2 = 13

2 + 5 × 8 - 2  = 13

2 + 40 - 2 = 13

42 - 2 = 13

40 ≠ 13

Left hand side is not equal to right hand side

4. ÷ and ×

After interchanging, new equation → 32 × 16 - 5 ÷ 8 + 2 = 13

By solving the equation using BODMAS Rule, we get:-

32 × 16 - 5 ÷ 8 + 2 = 13

32 × 16 - 0.625 + 2 = 13

512 - 0.625 + 2 = 13

514 - 0.625 = 13

513.375 ≠ 13

Left hand side is not equal to right hand side

Hence, the correct answer is "+ and ×".

The logic followed here is:-

(First number + Second number) ÷ 2 = Result

In 6@16 = 11

(6 + 16) ÷ 2 = 11

In 2@14 = 8

(2 + 14) ÷ 2 = 8

In 8@8 = 8

(8 + 8) ÷ 2 = 8

In 10@18 = ?

(10 + 18) ÷ 2 = 14

Hence, the correct answer is "14".

The pattern followed here is:-

In the given list is that the position of the second B is changing to preceded position.

BAAAAABA → BAAAABAA → BAAABAAA → BAABAAAA → BABAAAAA → BBAAAAAA

Hence, the correct answer is "BBAAAAAA".

Given → An old man starts his daily walking routine.

1) He walks 2 km East.

2. Then turns North and walks 1 km.

3. Then turns West and walks 2 km.

4. Then turns to his right and walks 1.5 km.

5. Distance and Direction of the old man with respect to the starting point.

As can be seen clearly from the above that the old man is 2.5 km away in the North direction with respect to the starting point.

Hence, the correct answer is "2.5 km North".

The least possible Venn diagram from the given statements is as follows:-

Conclusions:

I) All nozzles are valves → Doesn't follow (as no direct relationship is given between nozzles and valves so it is not definite that all nozzles are valves)

II) All valves are nozzles → Doesn't follow (as no direct relationship is given between valves and nozzles so it is not definite that all valves are nozzles)

Hence, the correct answer is "Neither conclusion I nor conclusion II follows".

Given:-

Rectangle represents Hairstylists, Circle represents Racers, Triangle represents Divers and Square represents Fathers.

Letters in Rectangle that represents Hairstylists are → D E

Letters in Circle that represents Racers are  → A B C I

Letters in Triangle that represents Divers are → A C G H

Letters in Square that represents Fathers are → A B E F G 

Set of letters that represents fathers who are Divers are → Common letters present in both Square that represents Fathers and Triangle that represents Divers i.e. G and A (as shown below by the shaded portion)

As can be seen clearly from the above that the Set of letters that represents Fathers who are Divers are G and A.

Hence, the correct answer is "GA".

The pattern followed here is:-

Hence, the correct answer is "NXH".

The pattern followed in the given series is:-

Hence, the correct answer is "20".

The logic followed here is:-

(First number × 3) + 1 = Second number

First number × 5 = Third number

Checking options one by one:-

1. In (6, 19, 30)

(6 × 3) + 1 → 18 + 1 = 19

6 × 5 = 30

2. In (9, 29, 45)

(9 × 3) + 1 → 27 + 1 = 28 not 29

9 × 5 = 45

3. In (11, 34, 55)

(11 × 3) + 1 → 33 + 1 = 34

11 × 5 = 55

4. In (13, 40, 65)

(13 × 3) + 1 → 39 + 1 = 40

13 × 5 = 65

As can be established from above that  (9, 29, 45) is the odd one out as it does't follow the logic.

Hence, the correct answer is "(9, 29, 45)".

The correct mirror image of the given figure when a mirror is placed on the line MN is as shown below:-

Hence, the correct answer is "Option 4".

Additional Information

• The mirror always forms the laterally inverted images, i.e. left changes to right and vice-versa.
• The reflection of an object in the water is called its water image.
• The water image of an object in the water is always vertically inverted, i.e. upside changes to downside and vice-versa.
• The water image is the mirror image in case if the mirror is placed horizontally below the object.

Given:-

Unfolded cube

When the unfolded cube is folded, Opposite faces of the cube will be:- 

1) 

 will be opposite to 

2) 

 will be opposite to 

3) 

 will be opposite to 

Now, checking Options one by one:-

1. Cube given in Option Figure (1) can be formed as no two opposite faces of the cube the present adjacent to each other.

2. Cube given in Option Figure (2) CANNOT be formed as two opposite faces i.e.

 and  

 are present adjacent to each other.

3)  Cube given in Option Figure (3) can be formed as no two opposite faces of the cube the present adjacent to each other.

4)  Cube given in Option Figure (4) can be formed as no two opposite faces of the cube the present adjacent to each other.

Hence, the correct answer is "Option 2".

The pattern followed here is:-

A letter is represented first by its row and then by its column.

Checking options one by one for the set of numbers for the word 'DUNG'.

1. 31 → A, 76 → V, 24 → F, 96 → X (so, the letter cluster formed is 'AVFX')

2. 20 → F, 59 → S, 41 → L, 88 → T (so, the letter cluster formed is 'FSLT')

3. 33 → J, 68 → O, 31 → A, 75 → N (so, the letter cluster formed is 'JOAN')

4. 42 → D, 57 → U, 75 → N, 11 → G (so, the word formed is 'DUNG')

Hence, the correct answer is "42, 57, 75, 11".

Calculation:

${\left( {159} \right)^{144}} + {\left( {114} \right)^{123}} - {\left( {110} \right)^{510}} + {\left( {213} \right)^{25}}$

We will consider the unit digit of each number

$\Rightarrow {\left( 9 \right)^{144}} + {\left( 4 \right)^{123}} - {\left( 0 \right)^{510}} + {\left( 3 \right)^{25}}$

⇒ 1 + 4 – 0 + 3                        (consider only unit place digit of each sum)

⇒ 8

∴ The unit place digit in the expression is 8

Calculation:

$\frac{{256}}{{0.256}} = \frac{{25.6}}{x}$

⇒ 256 × x = 25.6 × 0.256

⇒ x = (25.6 × 0.256) /256

∴ x = 0.0256

Given:

x = $\sqrt {15\sqrt {15\sqrt {15\sqrt {15\sqrt {15} } } } } \ldots .\infty$

Concept used:

if x = $\sqrt {n\sqrt {n\sqrt {n\sqrt {n\sqrt n } } } } \ldots .\infty = n$ , then x  = n

Calculation:

So,here

n = 15

∴ x² + 4 = (15)² + 4 = 225 + 4 = 229

Given:

x – 4y = 0     ---- (i)

4x + 3y = 19     ---- (ii)

Calculation:

Multiplying eq 1 by 4 and rewriting both equations we get

4x – 16y = 0

4x + 3y = 19

On subtracting

⇒ -19y = -19

⇒ y = 1

Putting y = 1 in eq(i) we get

⇒ 4x - 16 = 0

⇒ x = 4

So the solution will be x = a = 4, y = b = 1 i.e. (4, 1)

∴ value of ab/ (a + 4b) = (4 × 1) / (4 + 4 × 1) = 4/8 = 1/2

Calculation:

By the definition of the congruent triangle,

Two triangles are congruent if they are equal in all respect with each other

In simple sense one should overlap other completely and if this is the rule then their area will be same and they are always similar to each other

But,

Two similar triangles may or may not be congruent

∴ All options are correct regarding a triangle.

Here

Since, (13)² < (12)² + (6)²

Hence this is an acute angle triangle by triangle inequality concept

Given:

Ratio of weight of Ayush and Abhishek = 6 : 11

Increment in Abhishek's weight = 25%

Total increment in Ayush and Abhishek's weight = 40%

Total weight after increment = 119kg

Calculation:

Let the weights of Ayush and Abhishek be 60 and 110

Abhishek’s weight after increment = 110 × 125/100 = 137.5

Total Weight after increment = 170 × 140/100 = 238 units

⇒ 238 units = 119kg

⇒ 1 units = 1/2 kg

So, Weights of Ayush = 60/2 = 30 kg 

Weights of Abhishek = 110/2 = 55kg

Abhishek’s weight after increment = 55 × 125/100 = 68.75 kg 

Ayush's weight after increment =  119 - 68.75 = 50.25

Given

Total coins = 112

Value of 5, 2 and 1 rupee coins = 15 : 4 : 2

Formula used:

Total value = No. of coins × denomination

Calculation:

Let Rs. 15x be value of 5 rupees coins, Rs. 4x be the value of 2 rupees coins and 2x be the value of 1 rupee coins

According to the question,

15x/5 + 4x/2 + 2x/1 = 112

⇒ 3x + 2x + 2x = 112

⇒ 7x = 112

⇒ x = 16

∴ 2 rupees coins are there in the box = 4x/2 = 2x = 2 × 16 = 32

Shortcut Trick

Since only Liquid B is added, the quantity of Liquid A remains constant.

Initial ratio A : B = 5 : 4 | Final ratio A : B = 7 : 6

Multiply initial ratio by 7 and final ratio by 5 to equate A:

New Initial ratio = 35 : 28 | New Final ratio = 35 : 30

Increase in B = 30 − 28 = 2 units ⇒ Given as 2 litres, so 1 unit = 1 litre.

∴ The correct answer is 35 litres.

Alternate Method

Given: Initial ratio of Liquid A and Liquid B is 5 : 4. After adding 2 litres of Liquid B, the ratio becomes 7 : 6.

Formula Used: Ratio and Proportion ⇒ Amount of substance = Ratio part × common factor.

Let the initial quantity of Liquid A be 5x and Liquid B be 4x.

⇒ According to the question: 5x / (4x + 2) = 7 / 6

⇒ 6 × 5x = 7 × (4x + 2)

⇒ 30x = 28x + 14

⇒ 30x − 28x = 14

⇒ 2x = 14

⇒ x = 7

⇒ Quantity of Liquid A = 5x = 5 × 7 = 35 litres.

∴ The correct answer is 35 litres.

Additional Information

Constant Quantity Rule

In mixture problems, if only one component is added or removed, the quantity of the other component remains unchanged in terms of its actual volume.

Ratio Normalization

To solve ratio problems quickly, multiply the ratios by appropriate integers so that the part representing the constant component becomes the same in both ratios.

Alligation Method

Ratio of quantities = (Value of second component − Mean Value) / (Mean Value − Value of first component).

Shortcut TrickAverage of 10 numbers = 14

If each number is multiplied with a constant then the whole Average gets multiplied with the same constant.

∴ New Avg = 14 × 6 = 84

Shortcut Trick

Let the Principal be 9 units, then Simple Interest (SI) = 5 units.

Time (T) = 25 years.

Rate (R) = (SI × 100) ÷ (P × T)

R = (5 × 100) ÷ (9 × 25) = 500 ÷ 225

R = 20/9 %

∴ The correct answer is 20/9 %.

Alternate Method

Given:

Simple Interest (SI) = 5/9 of Principal (P)

Time (T) = 25 years

Formula Used:

SI = (P × R × T) ÷ 100

Year 0 Sum = P

Year 25 SI = 5/9 P

Time = 25 years Rate = R%

R = (SI × 100) ÷ (P × T)

Calculations:

⇒ (5/9)P = (P × R × 25) ÷ 100

⇒ 5/9 = (25 × R) ÷ 100

⇒ 5/9 = R ÷ 4

⇒ R = (5 × 4) ÷ 9

⇒ R = 20/9 %

∴ The correct answer is 20/9 %.

Additional Information

Simple Interest (SI)

It is the interest calculated only on the initial principal sum for the entire duration of the loan. Formula: SI = (P × R × T) ÷ 100.

Amount (A)

The total accumulated sum at the end of the time period consisting of the principal and simple interest combined. Formula: A = P + SI = P[1 + (R × T) ÷ 100].

Rate of Interest

The percentage of the principal charged or earned per unit time. Computed directly by R = (SI × 100) ÷ (P × T).

Given:

S.P = 684.25

C.P = 595

Formula used:

Profit = S.P. - C.P.

Profit% = (Profit/C.P) × 100%

Calculation:

∴ Profit % = (684.25 – 595)/595 × 100 = 15%

Given:

M.P. = Rs.4200

Successive discount = 25% and y%

S.P. = Rs 2898

Formula used:

S.P. = M.P.( 1 - D₁/100)(1 - D₂/100)

where D₁ and D₂ are two successive discounts

Calculation:

According to the question

2898 = M.P × 75/100 × (1 – y/100)

⇒ 2898 = 4200 × 75/100 × (1 – y/100)

⇒ 2898/ (42 × 75) = (1 – y/100)

⇒ 2898/3150 – 1 = (-y/100)

⇒ (-252)/3150 = - y/100

∴ y = (252 × 100)/3150 = 8%

Shortcut TrickEffective successive discount = x + y -xy/100

By hit and trial method,

Let y = 8%

then 25% + 8% - 25 × 8/100 = 33 - 2 = 31%

Now, 69% of 4200 = Rs. 2898 Satisfied

Calculation:

[(√529) + (√5.29) + (√0.0529)]

⇒ [(√529) + (√529/100) + (√529/10000)]

⇒ (23 + 23/10 + 23/100)

⇒ (23 + 2.3 + 0.23) = 25.53

∴ The correct answer is 25.53

Given:

Total wages = Rs.7200

No. of days P takes to do a work = 20 days

No. of days Q takes to do a work = 12 days

No. of days P + Q + R takes to do a work = 5 days

Concept used:

Total work = Efficiency × Time

Wages ∝ Work and Work ∝ Efficiency

Calculation:

Let the total work = 60 units

Efficiency of P = 60/20 = 3 units/day

Efficiency of Q = 60/12 = 5 units/day

Total efficiency of P + Q + R = 60/5 = 12 units/day

Efficiency of R = 12 – (3 + 5) = 4 units/day

The share will be divided on the basis of work done

∴ Share of R = 4/12 × 7200 = Rs. 2400

Given:

Distance covered = 143 km

Time taken to travel upstream = 13 hours

Time taken to travel downstream = 11 hours

Formula used:

If b is speed of boat and s is the speed of the stream, then

upstream speed = b - s

Downstream speed = b + s

Speed = Distance ÷ Time

Calculation:

Let the speed of the boat and speed of the stream be x km/hr and y km/hr respectively

According to the question,

143/(x – y) = 13 ---- (i)

143/(x + y) = 11 ---- (ii)

On comparing both eq

11(x + y) = 13 (x – y)

⇒ 11x + 11y = 13x – 13y

⇒ 24y = 2x

⇒ x ∶ y = 12 : 1

∴ Speed of the boat in still water is 12 km/hr

Calculation:

From the options

As we can see in the diagram in 2013 the production was 30 and in its previous year i.e in 2012 it is 90

Hence, the answer will be 2013.

Rest in all options the production was maximum or not as per the question.

Calculation:

Production of steel in 2011 = 35

Production of steel in 2015 = 25

∴ Difference = 35 – 25 = 10

Calculation:

Production of steel in 2012 = 90

Production of steel in 2015 = 25

∴ Required % = (90 – 25)/25 × 100 = 260%

Calculation:

We know,  1 Billion = 1000 Million

The cost of 1 ton of steel = Rs. 30000

production of steel in 2017 = 80 Million tonnes

So, 

cost of production in 2017

= 80 Million × 30000

= 80 Million ×  100 × 300

= 8000 Million * 300

= 8B * 300

= 2400 Billion

Hence, Rs. 2400 (in billion) is the correct answer.

Given:

The perimeter of a square = 26 cm

Formula used:

Perimeter of square = 4a

Area of a square = a²

Where a → side of the square

Calculation:

⇒ 4a = 26

⇒ a = 26/4 = 6.5 cm

∴ area of square = a² = 6.5 × 6.5 = 42.25 cm sq

Given:

Area of circle = 616cm²

Formula used:

Area of circle = πr²

where r → radius of a circle

Calculation:

⇒ πr² = 616

⇒ 22/7 × r² = 616

⇒ r² = 196

∴ r = 14 cm

Given:

Diameter = 14 cm,

So, r = 14/2 = 7 cm

Formula used:

Surface area of sphere = 4πr²

where r → radius of a sphere

Calculation:

r = 14/2 = 7 cm

∴ Surface area of sphere = 4 × 22/7 × 7 × 7 = 616 sq.cm

Calculation:

(1/√3 – sin 45°)

⇒ 1/(√3) – 1/(√2)

⇒ (√2 – √3)/(√6)

Given:

In ΔPQR measure of angle Q is 90°

cotP = 8/15 and PQ = 4 cm

Formula used:

Cot θ  = Base/Perpendicular

Calculation:

Cot P = PQ/QR

⇒ PQ/QR = 8/15

⇒ 4/QR = 8/15

⇒ QR = 7.5

By Pythagoras Theorem,

PR² = PQ² + QR²

⇒ PR² = 4² + 7.5²

⇒ PR² = 16 + 56.25 = 72.25

∴ PR = 8.5 cm

• The International Monetary Fund (IMF) is an international organization consisting of 189 countries working to foster global monetary cooperation, secure financial stability, facilitate international trade, promote high employment and sustainable economic growth and also to reduce poverty around the world.
• Voting power in the IMF is purely based on a quota system.
• So, voting rights in the IMF are distributed on the basis of proportion to quota allotted to countries from time to time.

• Land reform involves the changing of laws, regulations or customs regarding the land ownership.
• The main purpose of land reforms in India are:
• Rational use of Resources
• Raising Production level
• Removal of Exploitation
• Social Welfare
• Planned Development
• Raising the Standard of living

Key Points

• Land reforms are the reforms that involve change of laws, regulations or customs with respect to the ownership of the land.
• According to the great economist Prof. According to Gunnar Myrdal, “the land reforms are the planning and institutional restructuring of the relations between the man and the land".
• At the time of independence, in most of the agricultural sector of the country, the role of mediators existed between the tenant and the owner of the land.
• There was no guarantee of this landholding and certainty in rent. Therefore, after independence, the cultivator was given the real rights of the land.
• To do this, the process of land reform was adopted, which was considered a progressive process.

Additional Information

Following were the objectives of the Land Reforms:

• To remove the existing institutional anomalies in the agriculture sector and to rationalize and modernize the sector by steps such as land ownership, land rights, paying attention to tenant safety ,etc.
• To eliminate economic inequality and to achieve social equality.
• To obtain and establish a public welfare state.
• Eradicating poverty and imparting common beliefs among the people.
• To end the old land relations and establish a new system in which the cultivators of the land are its actual owner.
• Ending social injustice, strengthening the position of tenants and, granting equal rights for all sections of the rural population

The correct answer is Hum.

Key Points

• ​A hummock is a little mound or knoll that is above ground.
• They often exist in groups or fields and are typically not taller than 15 meters.
• Hummocks are created by large landslide avalanches, which often happen in volcanic regions.
• A boss or rounded knoll of ice rising above the overall level of an ice field is known as an ice hummock.

Additional Information

• Monadnock:
• A rock hill, knob, ridge, or tiny mountain that abruptly rises from a gently sloping or almost level surrounding plain is known as an inselberg or a monadnock.
• Pediplain:
• An expansive plain created by the coalescence of pediments is known as a pediplain.

• Narmada river is one of the three major rivers in peninsular India that run from east to west along with Tapti River and the Mahi River.
• It is one of the rivers in India that flows in the rift valley, flowing west between the Satpura and Vindhya ranges.
• So, Narmada river of peninsular India is distinct from the remaining three in the above rivers

The correct answer is Lothal.

Key Points

• Couple burial was found from Lothal at the Harappan sites.
• Lothal was one of the southernmost city of the ancient Indus valley civilisation located in the Bhal region of Gujarat.
• Burial or interment is the ritual act of placing a dead person or animals, sometimes with objects, into the ground.

• The Indian Councils Act 1892 was an Act of Parliament of the United Kingdom that authorized an increase in the size of the various legislative councils in British India.
• Viceroy Lord Dufferin setup a committee and it had a responsibility to draw a plan for the enlargement of provincial councils and enhancement of their status.
• So, The Indian Council of 1892 Act was based on Dufferin Plain.

The correct answer is Painting.

Key Points

• Nandalal Bose (1882-1966):
• He was the disciple of Abanindranath Tagore.
• His paintings mainly revolve around Indian history and Hindu mythology.
• The poster of the famous Haripura Congress of 1938 was drawn by him.
• He illustrated the Constitution of India by applying gold leaf and stone color.
• He was born in 1882 and died in 1966 in Kolkata.
• He was known for his work in the beautification of the original manuscript of the Indian Constitution.
• He was awarded Padma Vibushan in the year 1954.

• Saudi Arabia is the country which announced to allow women into three sports stadium for the first time since 2018 in October 2017.
• Because the Kingdom appears to be relaxing some norms as a part of their “Vision 2030” for economic and social reforms.

• Master of None is an American comedy-drama web television series which was created by Aziz Ansari and Alan Yang.
• Golden Globe award was awarded for “Excellence in film and television” by the United States.
• In January 2018, Aziz Ansari became the first Indian-American and first Asian to win a Golden Globe award for “Master of None” comedy series.

• Ananda Samarakoon was a Sri Lankan composer and musician.
• He composed the Sri Lankan national anthem “Sri Lanka Matha” and is considered as the father of artistic Sinhala music.

Johan Newlands an English chemist has classified 56 elements into 11 groups based on the physical properties and proposed the Law of Octaves which states that every eight elements repeated its physical and chemical properties.

Newlands periodic table:

• In a periodic table, each row of elements consists of total seven elements and the eighth element falls under the first element.
• In the first column lithium (Li) is the first element and sodium (Na) is the eighth element.

A compound is a substance that formed when two or more chemical elements are chemically bonded together.

Ammonia is a compound of nitrogen and hydrogen with formula NH₃which is colorless gas.

• The 11^th Schedule of Indian Constitution was added in 1992 by 73^rd Constitution Amendment Act. This schedule contains 29 subjects.
• This schedule covers important topics such as Panchayat’s powers, rural development, poverty alleviation, market, roads,and drinking water.
• It is in Part 9th.
• How to remember all the schedules: Code for 12 schedules is >TEARS OF OLD PM

1st Schedule: T- Territory, 2nd Schedule: E- Emoluments/salary, 3rd Schedule: A- Affirmation/Oath, 4th Schedule: R- Rajya Sabha, 5th Schedule: S- Scheduled Tribes, 6th Schedule: O- Other Tribes, 7th Schedule: F- Federal (Division Of Powers), 8th Schedule: O- ;Official Regional Languages, 9th Schedule: L- Land Reform, 10th Schedule: D- Defection (Anti-Defection Law), 11th Schedule: P- Panchayati Raj, 12th Schedule: M- Municipal Corporation

Solution:

• List of Provisions amended by Special Majority of Parliament and Consent of States
• Election of President and its manner.
• The extent of the executive power of the Union and the states
• Supreme court and High courts
• Distribution of legislative powers between Union and States.
• Any of the list in the seventh schedule
• Representation of states in Parliament
• Power of Parliament to amend the Constitution and its procedure (Article 368).

• Blood is called a liquid connective tissue because it connects various body tissues and organs together by oxygen, hormones and various nutrients.
• The intercellular fluid bathes and surrounds the cells of the body, and provides a means of delivering materials to the cells, intercellular communication, and removal of metabolic waste.
• Blood is a connective tissue embedded in a fluid type of intercellular matrix.

• A Lichen is a composite organism that arises from algae or cyanobacteria living among filaments in a symbiotic relationship.
• Symbiosis is any type of a close and long-term biological interaction between two different biological organisms.
• Slow-growing large colored patches on the bark of trees are the examples of symbiotic life forms called lichen.

• On 17 October 2017, Maneka Sanjay Gandhi launched the online Campaign ‘women for women:#IAmThatWomen’ to end gender bias.
• Maneka Sanjay Gandhi is an Indian Union Cabinet Minister for Women and Child Development.

• India was declared free from Trachoma infective eye disorder on 9 December 2017 by Union Health Minister J.P.Nadda.
• Trachoma is a chronic infective disease of the eye and is leading cause of infective blindness globally.

• On 25 October 2017, the government announced a recapitalization plan for state-owned banks. Rs 2.11 lakh crore was announced for Banks’ recapitalization by Arun Jaitley.
• The recapitalization is described as a strategy for enhancing the financial base of the entity to overcome a rough financial health.

• On 22 November 2017, the cabinet approved the expansion of "Beti Bacho Beti Padhao" for greater Pan India coverage.
• PAN is a widely used business term. PAN stands for “Presence Across Nation”.
• It means:
• Spreading Across India OR
• Spreading All over India OR
• Presence in All parts of India.
• Beti Bachao, Beti Padhao is a personal campaign of the Government of India which aims to generate awareness and improve the efficiency of welfare services intended for girls.

Given:

Resistance, R = 800 Ω

Current, I = 0.2 A

Time, t = 40 seconds

To find:

Heat

Formula:

The Heat in joules is given by H = I²Rt

Calculation:

H = I²Rt

H = (0.2)²(800)(40)

H = 1280 (J)