SSC CHSL Previous Paper 19 (Held On: 12 March 2018 Shift 2) (Previous Year Paper)

The correct answer is 'Impenetrable'

Key Points

• The correct spelling is 'Impenetrable' and the meaning of this word is- 'Impossible to pass through or enter.'
• Let's see an example-
• His books are notoriously impenetrable.

The correct answer is 'CAB'

Key Points

• In the fixed sentence, the last word is 'to' which is a preposition and we know that it is going to make an infinitive phrase so we need a verb after this. The verb is written in part C.
• At the last of sentence C, the word given is 'has' that makes the perfect tense or a modal verb 'has to' as it cannot make a perfect tense because there no third form of the verb given. Hence, the second part is 'A'

So the correct sentence is- If a country wants to prove it is business-friendly, it has to listen to the World Bank, the custodian of big business.

The correct answer is 'No improvement'

Key Points

• In the given sentence, 'has' is used for the subject 'course' which is a singular noun. 'been' is the third form of the verb 'be'.
• 'With more than a thousand students joining it' is a phrase that tells that the action is still continuing and in-process. This action was started in the past hence, we need to use the perfect tense which is correctly used in the sentence.

So the correct sentence is- The course has been a success with more than a thousand students joining it.

The correct answer is 'was interrupted'

Key Points

• The given bracketed part is to be replaced with 'was interrupted' because the subject of the sentence is 'game' which is a singular noun hence use the singular verb with it.
• We cannot use the present tense here, because the subordinate clause 'when the rains stopped' is in the past tense. Hence use the past tense in the main clause too.

So the correct sentence is- That game was interrupted by the rains; it resumed an hour after, when the rains stopped.

The correct answer is 'Rancorous'

Key Points

• Let's see the meaning of the given words-
• Piety→ means 'the quality of being pious or reverent'
• Amity→ means 'friendly relations'
• Rancorous→ means 'bitterness and resentment'
• Fidelity→ means 'continuing loyalty to a person'
• Hence, according to the meaning of the given words, the correct answer is 'Rancorous'

The correct answer is 'Edify'

Key Points

• Let's see the meaning of the given words-
• Hoodwink→ means 'deceive or trick'
• Allude→ means 'hint at'
• Beguile→ means 'trick into doing something'
• Edify→ means 'instruct or improve morally; intellectually'
• So according to the meaning of the given words, the correct answer is 'Edify'

The correct answer is 'Children should not speak in the presence of adults'

Key Points

• The meaning of the given idiom 'children should be seen and not heard' means 'you think children should behave well and be quiet'
• ​Example: "When the adults gathered for an important discussion, the children were reminded that 'children should be seen and not heard,' and they quietly played in the corner while the grown-ups talked.
• So according to the meaning the nearest meaning is 'Option 3'

The correct answer is 'Be in the air'

Key Points

• The meaning of the given idiom 'Be in the air' is 'to be going to happen very soon' Or 'if a feeling is in the air, a lot of people feel it at the same time'
• Let's see an example-
• Here was a sense of excitement in the air.

The correct answer is 'every'

Key Points

• In the given blank, we need a determiner because before the blank the preposition 'in' is given and we know that with the preposition we usually use the prepositional object which can be a noun/pronoun/gerund here the prepositional object is 'sentence' for this noun we need a determiner
• In the given options-
• All- is a pronoun
• While- is conjunction.
• Every- is a determiner.
• As- is an adverb.
• hence, the correct answer is 'every'

The correct answer is 'Pronunciation'

Key Points

• In the given blank, we need a noun because before the blank there is a definite article. Hence, in the option, there is only one singular noun which is 'pronunciation.'
• The meaning of this word is-  the way in which the word is pronounced.
• 'Pronounced' is a past participle and 'pronounce' is a verb also, 'pronounces' is a plural noun.

So the correct answer is 'Option 4'

The correct answer is 'on'

Key Points

• The meaning of the word 'Stress'→ pressure; gives particular emphasis or importance.
• With this word, we usually use the preposition 'on' that means 'about or concerning something.'

So the correct answer is 'on'

The correct answer is 'best'

Key Points

Reading the above sentence we find that: 

• The sentence is talking about English and how to master it.
• In the given blank we find that the verb 'be mastered' is written.
• But this verb in itself has little meaning and it should be accompanied by an adverb.
• And the adverb should convey the degree to which the action of mastering can be done.

Important Points

Looking at the options we find that: 

• The word best also acts as an adverb which means to the highest degree.
• This gives complete meaning to the sentence i.e to master English to the highest degree.

Thus the sentence will be: 'and can best be mastered by...'

Therefore we can conclude that the correct answer is best.

The correct answer is 'So'

Key Points

• 'So' is an adverb that is used to show the meaning 'to such a great extent.'
• 'So that' in this phrase 'that' is used to give the result.
• In the given sentence, The English Language is So complex in character that it can scarcely be learned by rule. (Scarcely be learned by rule is the result of the statement given before it.)

So the correct answer is 'Option 4'

The correct answer is 'Occurrence'

Key Points

• The correct spelling is 'Occurrence'
• The meaning of the given word is- An occurrence is something that happens.
• Let's see an example-
• 'The food queues have become a daily occurrence across the country.'

The correct answer is 'The teacher applauded him saying that he had done well.'

Key Points

The given sentence is in 'Direct speech' we need to follow the following steps while changing Direct speech.

• #The first person of reported speech is changed according to the pronoun of the reporting verb.
• Let's see an example-
• She said, "I will go to London." (Direct speech)
• She said that she would go to London. (Indirect speech)
• #The first-person pronoun of reported speech is not changed if the pronoun of the reporting verb is also the first person.
• Let's see an example-
• I said, "I had applied for a job." (Direct speech.)
• I said I had applied for a job. (Indirect speech.)
• #The second person pronoun of the reported speech is changed according to the 'object' of the reporting verb.
• Let's see an example-
• She said to me, "You are a brilliant student." (Direct Speech)
• She told me that I was a brilliant student. (Indirect Speech)
• She said to them, "You are brilliant students" (Direct speech)
• She told them that they are brilliant students. (Indirect speech)
• #The third person pronoun of the reported speech will not be changed in indirect speech.
• Let's see an example-
• He said, "She will buy a pen." (Direct speech.)
• He said that she would buy a pen. (Indirect speech.)
• The given sentence is an exclamatory sentence follow the table for exclamatory sentences-

• The given sentence speech can be changed in two ways- the first one is 'applauded' and the second one 'exclaimed with wonder' as the second one is not given in the options then choose the first one as your answer.

The correct answer is 'It will be conquered by me.'

Key Points

• The following things to be remembered while changing the active voice into the passive voice-
• Firstly, check the tense of the sentence because it is not going to be changed in the passive voice.
• Secondly, check whether the sentence has an object in it. If it doesn't then go for the infinitive phrase.
• The structure of the passive voice is- Subject + Verb (be) + V₃ (past participle) + by + Object.
• So according to the steps, the correct passive voice of the given sentence is- it will be conquered by me.

The correct answer is 'PRQ'

Key Points

• In the fixed sentence, the last word is 'step' is the subject of the sentence and we need the verb for this singular subject which is written in sentence 'R' but it is not going to be the first part because it makes the whole sentence contextually incorrect.
• So, the first sentence will be 'P' i.e. 'in the expansion of'
• 'of' is a preposition and after the preposition, we need a prepositional object which is going to be a noun/pronoun/gerund/, and the noun is written in 'R' i.e. Europe overseas.

So the correct sentence is- The first and decisive step in the expansion of Europe overseas was the conquest of the Atlantic Ocean.

The correct answer is 'Harmony'

Key Points

• Let's see the meaning of the given words-
• Antithesis→ means 'a person or thing that is the direct opposite of another'
• Opposite→ means 'situated on the other or further side; facing'
• Reverse→ means 'move backward'
• Harmony→ means 'agreement or concord'
• Conflict→ means 'a serious disagreement or argument'
• So according to the meaning of the given words, the correct answer is 'harmony'

The correct answer is 'known'

Key Points

• Let's see the meaning of the given words-
• Unprecedented→ means 'never done or known before'
• Exceptional→ means 'unusual; not typical or unusually good.'
• Bizarre→ means 'very strange or unusual'
• Fantastic→ means 'imaginative or fanciful; remote from reality.'
• Known→ means 'recognized, familiar, or within the scope of knowledge.'
• So according to the meaning of the given words, the correct answer is 'Known'

The correct answer is 'Erotic'

Key Points

• Let's see the meaning of the given words-
• Amorous→showing or feeling lustful desire.
• Detest→ means 'dislike'
• Correct→ means 'free from error; true or right'
• Erotic→ means 'relating to or tending to arouse excitement'
• Appreciate→ means 'recognize the value or significance of.'
• ​So according to the meaning of the given words, the correct answer is 'Erotic'

The correct answer is 'charming'

Key Points

• Let's see the meaning of the given words-
• Winsome→ means 'attractive or appealing'
• Repulsive→ means 'intense distaste or disgust'
• Charming→ means 'delightful and attractive or very polite.'
• Ugly→ means 'unpleasant or repulsive'
• Repellent→ means 'able to repel a particular thing; impervious to'
• So according to the meaning of the given words the correct answer is 'charmng'

The correct answer is 'Every'

Key Points

In the given blank, we need to use 'every' in the blank

• According to grammar, 'every' is a determiner that is used to show 'for more than two people or group' and 'each' is a determiner or a distributive pronoun that is used for 'for two or more than two'
• In the given sentence, the subject is 'citizen' hence for this we need a determiner we cannot use 'each' as it is a determiner but contextually it would be incorrect. hence, use 'every' to convey the meaning of 'nearly, almost, approximately, roughly'
• Let's see an example-
• They have revised every concept.
• They would go to that temple every Sunday.

So the correct sentence is- Every citizen of India must know about our country's history, struggle, culture, and other important things.

The correct answer is 'Can't'

Key Points

• In the given blank, we need to use 'can't'
• According to grammar, 'can' is a modal verb and it is used to express ability or to say that something is possible.
• Let's see an example-
• Can you speak Japanese?
• Hence, in the given sentence, 'Can' is used to show the possibility.

So the correct sentence is- What is it? Can't it wait?

The correct answer is 'Option 2' i.e**. '2'.**

Key Points

• The relative clause in part 2, "which from his teachings inherited almost its entire lexicon," contains an error in the placement of phrases.
• The phrase "from his teachings" is misplaced, making the sentence awkward and difficult to understand.
• "Its" refers to "Western Philosophy," and indicates that the lexicon of Western Philosophy is almost entirely derived from Aristotle's teachings.
• The correct structure is "which inherited almost its entire lexicon from his teachings" to maintain clarity and grammatical correctness.

Therefore, the correct answer is: 2.

Additional Information

• Option 1: Along with Plato, Aristotle is considered the father of Western
• This part of the sentence is correct, setting the context without any grammatical errors.
• Option 3: lexicon, including problems and methods of inquiry.
• This part is also correct, as it properly lists the components included in the lexicon that Western Philosophy inherited.

The correct answer is '2' i.e. error lies in the second part of the sentence.

Key Points

In the second part of the sentence, the usage of 'stayed' is incorrect Instead, use 'stay'

• According to grammar, whenever an infinitive phrase is used we have to use the base form of the verb with the preposition 'to'.
• Let's see an example-
• He asked me not to be late.

So the correct sentence is- She chose to stay there for a while.

The elephant is a Mammal.

Similarly, the Rabbit is also a Mammal.

Hence, Rabbit: Mammal is the correct answer.

The pattern followed here is:

5 × 6 = 30

Similarly,

3 × 4 = 12

Hence, 12 is the correct answer.

→ T - 5 = O, O - 4 = K

→ U - 4 = Q, Q - 3 = N

→ R - 3 = O, O - 3 = L

By following the same pattern,

→ S - 2 = Q, Q - 2 = O

Hence, SQO is the correct answer.

Cone, Cylinder, and Prism are 3-dimensional figures, but Rectangle is a 2-dimensional figure.

Hence, the correct answer is "Rectangle".

The logic followed here is,

Logic: First number + 4 = second number

1. 15 + 4 = 19

2. 17 + 4 = 21

3. 19 + 4 = 23

4. 11 + 4 = 15

Clearly, 11 - 13 does not follow the same pattern.

Hence, the correct answer is "11 - 13".

The pattern followed here is:-

1. HFDB

2. KIGD

3. VTRP

4. NLJH

As can be seen clearly from the above that KIGD does not follow the same pattern and thus, is the odd one out.

Hence, the correct answer is "KIGD".

The correct order of the given word as they would appear in an English dictionary is as shown below:-

1. Salted
2. Sand
3. Serious
4. Sickle
5. Single

As can be seen clearly from the above that the word 'Serious' will come at THIRD position. 

Hence, the correct answer is "Serious".

The pattern followed here is:-

Hence, the correct answer is "31".

The pattern followed here is:-

As can be seen clearly from the above that the next term in the given series is 'MR'

Hence, the correct answer is "MR".

Given → Raja, Komal, Rupal, Sneha and Tarun are sitting in a line facing south.

1. Rupal is sitting at west end and Sneha is sitting at east end.

2. Tarun is neighbor of Komal and Rupal.

3. Raja and komal are sitting together.

As can be seen clearly from the above that Komal is sitting in the middle.

Hence, the correct answer is "Komal".

Given word → VISITORS

1. VISS → VISITORS (As all the letters are present so, the word can be formed)

2. VISIT → VISITORS (As all the letters are present so, the word can be formed)

3. SITOR → VISITORS (As all the letters are present so, the word can be formed)

4. SITE → VISITORS (As the letter 'E' is missing so, the word 'SITE' CANNOT be formed)

Hence, the correct answer is "SITE".

The pattern followed here is:-

POWER is written as RMYCT

Similarly,

TABLE is written as VYDJG

Hence, the correct answer is "VYDJG".

Given → 17 × 18 ÷ 30 - 20 + 14

After replacing the symbols with their code,

New Equation → 17 + 18 × 30 ÷ 20 - 14

Now, after applying BODMAS Rule and solving the equation, we get:-

17 + 18 × 30 ÷ 20 - 14

17 + 18 × 1.5 - 14

17 + 27 - 14

44 - 14 = 30

Hence, the correct answer is "30".

a

Given Equation → 14 + 16 ÷ 40 × 8 - 48 = 46

Checking options one by one by interchanging the signs

1) ÷ and × 

After interchanging ÷ and × we get

New Equation → 14 + 16 ×  40 ÷  8 - 48 = 46

Now, after solving the equation using BODMAS Rule, we get:-

14 + 16 ×  40 ÷  8 - 48 = 46

14 + 16 × 5 - 48 = 46

14 + 80 - 48 = 46

94 - 48 = 46

46 = 46

Left hand side is equal to right hand side.

2) × and -

After interchanging × and - we get

New Equation → 14 + 16 ÷ 40 - 8 ×  48 = 46

Now, after solving the equation using BODMAS Rule, we get:-

14 + 16 ÷ 40 - 8 ×  48 = 46

14 + 0.4 - 8 × 48 = 46

14 + 0.4 - 384 = 46

14.4 - 384 = 46

-369.6 ≠ 46

Left hand side is not equal to right hand side.

3) ÷ and -

After interchanging ÷ and - we get

New Equation →  14 + 16 - 40 × 8 ÷ 48 = 46

Now, after solving the equation using BODMAS Rule, we get:-

14 + 16 - 40 × 8 ÷ 48 = 46

14 + 16 - 40 × 0.16 = 46

14 + 16 - 6.4 = 46

30 - 6.4 = 46

23.6 ≠ 46

Left hand side is not equal to right hand side.

4) - and +

After interchanging - and + we get

New Equation → 14 - 16 ÷ 40 × 8 + 48 = 46

Now, after solving the equation using BODMAS Rule, we get:-

14 - 16 ÷ 40 × 8 + 48 = 46

14 - 0.16 × 8 + 48 = 46

14 - 1.28 + 48 = 46

14 + 48 - 1.28 = 46

62 - 1.28 = 46

60.72 ≠ 46

Left hand side is not equal to right hand side.

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

The logic followed here is :-

40 @ 8 → (40 ÷ 8) × 10 = 50

30 @ 3 → (30 ÷ 3) × 10 = 100

10 @ 2 → (10 ÷ 2) × 10 = 50

Similarly,

20 @ 5 → (20 ÷ 5) × 10 = 40

Hence, the correct answer is "40".

The pattern followed here is:-

Hence, the correct answer is "PQPQPQRPQ".

Given:-

1. An eagle starts from its nest and flies 1 km East.

2. Then turns North and flies 2 km.

3. Then turns West and flies 7 km.

4. Finally turns to its left and flies 2 km.

5. Distance and direction of an eagle with respect to its nest.

As can be seen clearly from the above that the Eagle is 6 km to the west of its nest.

Hence, the correct answer is "6 km West".

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

Conclusions:

I. All raincoats are Jackets → Doesn't follow (As no direct relationship is given between raincoats and Jackets so, it is not definite that all raincoats are Jackets)

II. All jackets are raincoats → Doesn't follow (As no direct relationship is given between raincoats and Jackets so, it is not definite that all jackets are raincoats)

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

Given:-

Rectangle represents lawyers, Circle represents Bakers, Triangle represents Singers and Square represents Golfers.

Letters in Rectangle that represents lawyers are → D H I J

Letters in Circle that represents Bakers are → A B F G H I

Letters in Triangle that represents Singers are → E F G K

Letters in Square that represents Golfers are → B C F I J K

Common letters that represents both Circle that represents Bakers and Square that represents Golfers are → B F I

The set of letters shown by the shaded portion in the figure represents Golfer who is not Bakers i.e.  → The letters that are present in Square that represents Golfer but not in Circle that represents Bakers i.e. CJK.

Hence, the correct answer is "CJK".

The pattern followed here is:-

Hence the correct answer is "RUK".

The pattern followed here is:-

Hence the correct answer is "167".

The logic followed here is:-

(First number)² = Second number

First number × (First number)² = Third number

1. In (2, 4, 8)

(2)² = 4

2 × (2)² = 2 × 4 = 8

2. In (3, 9, 27)

(3)² = 9

3 × (3)² = 3 × 9 = 27

3. In (4, 16, 32)

(4)² = 16

4 × (4)² = 4 × 16 = 64 not 32

4. In (5, 25, 125)

(5)² = 25

5 × (5)² = 5 × 25 = 125

As can be seen clearly from the above that (4, 16, 32) doesn't follow the logic and is the odd one out from the given alternatives.

Hence, the correct answer is "(4, 16, 32)".

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 1".

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:-

An unfolded cube.

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

Checking options one by one to see the figure cube that cannot be formed:-

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

2. Cube in Option figure (2) can be formed as no two opposite faces of the cube are present adjacent to each other.

3. Cube in Option figure (3) CANNOT be formed as two opposite faces i.e. 

and

 of the cube are present adjacent to each other

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

Hence, the correct answer is "Option 3".

The logic followed here is:-

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

1) 32 → K ; 76→ N ; 40→ I ; 87 → T (so, the word formed is 'KNIT')

2) 34 → H ; 67 → Q ; 21 → J ; 85 → Z (so, the letter cluster formed is HQJZ)

3) 21 → J ; 69 → R ; 40 → J ; 68 → X (so, the letter cluster formed is JRJX)

4) 22 → J ; 59 → X ; 14 → F ; 68 → X (so, the letter cluster formed is JXFX)

Hence, the correct answer is "32, 76, 40, 87".

Calculation:

324 meters covered by Ankit = 1 day

1 meter covered by Ankit = 1/324 day

1 km covered by Ankit = 1/324 × 1000

8.1 km covered by Ankit = 1/324 × 8.1 × 1000

= 25 days

∴ 8.1 km covered by Ankit is 25 days.

Calculation:

(13)² - (14)² + (17)² - 250 = √?

⇒ 169 - 196 + 289 - 250 = √?

⇒ -27 + 289 - 250 = √?

⇒ -277 + 289 = √?

⇒ √? = 12

∴ ? = 144

Given:

$\frac{{{{\rm{a}}^2}{\rm{;}} + {\rm{;}}{{\rm{b}}^2}}}{{{{\rm{a}}^3}{\rm{;}} + {\rm{;}}{{\rm{b}}^3}}}$

Calculation:

When a = 2 + √3 and b = 2 - √3

Putting the value of a & b

$\frac{{{{(2{\rm{;}} + {\rm{;}}\sqrt 3 )}^2}{\rm{;}} + {\rm{;}}{{(2{\rm{;}} - {\rm{;}}\sqrt 3 )}^2}}}{{{{(2{\rm{;}} + {\rm{;}}\sqrt 3 )}^3}{\rm{;}} + {\rm{;}}{{(2{\rm{;}} - {\rm{;}}\sqrt 3 )}^3}}}$

$\Rightarrow {\rm{}}\frac{{{\rm{;}}4{\rm{;}} + {\rm{;}}3{\rm{;}} + {\rm{;}}4{\rm{;}}\sqrt {3{\rm{;}}} {\rm{;}} + {\rm{;}}4{\rm{;}} + {\rm{;}}3 - 4{\rm{;}}\sqrt {3{\rm{;}}} }}{{8{\rm{;}} + {\rm{;}}3\sqrt 3 {\rm{;}} + {\rm{;}}6\sqrt 3 \left( {{\rm{;}}2{\rm{;}} + {\rm{;}}\sqrt 3 } \right){\rm{;}} + {\rm{;}}8 - 3\sqrt 3 - {\rm{;}}6\sqrt 3 \left( {2 - {\rm{;}}\sqrt 3 } \right)}}$

$\Rightarrow {\rm{}}\frac{{14{\rm{;}}}}{{8{\rm{;}} + {\rm{;}}15{\rm{;}}\sqrt 3 {\rm{;}} + {\rm{;}}18{\rm{;}} + {\rm{;}}8 - 15{\rm{;}}\sqrt 3 {\rm{;}} + {\rm{;}}18}}$

⇒ 14/52 = 0.27 (Approx.)

Calculation:

Let X₁ = 4, X₂ = 6, Y₁ = 2 & Y₂ = 3

Equation of line

⇒ (Y - Y₁) = (Y₂ - Y₁)/(X₂ - X₁₎) × (X - X₁)

⇒ (Y - 2) = (3 - 2) /(6 - 4) × (X - 4)

⇒ 2Y - 4 = X - 4

⇒ X - 2Y = 0

⇒ X = 2Y

At X intercept, Y = 0

∴ X = 0

Calculation:

In equilateral triangle has all three medians of equal length.

Calculation:

By Interior Angle Bisector Theorem

$\Rightarrow {\rm{}}\frac{{{\rm{AB}}}}{{{\rm{AC}}}}{\rm{}} = {\rm{}}\frac{{{\rm{BD}}}}{{{\rm{DC}}}}{\rm{}} = {\rm{}}\frac{3}{2}$

Calculation:

80% of 800 = 800 × 80/100

= 640

So, 30% less than 640 = 640 × 70/100

= 448

Shortcut Trick

Since the number of coins of each type is equal, consider one set containing one of each coin.

Value of one set = ₹1 + ₹2 + ₹5 = ₹8.

Number of coins of each type = Total Amount ÷ Value of one set.

Number of coins = 184 ÷ 8 = 23.

∴ The correct answer is 23.

Alternate Method

Given:

Total amount in the box = ₹184

Denominations of coins = ₹1, ₹2, and ₹5

Condition: Equal number of each coin type.

Formula Used:

Total Value = ∑ (Number of coins × Face value of each coin)

Calculations:

⇒ Let the number of coins of each type be x.

⇒ Value of ₹1 coins = 1 × x = x

⇒ Value of ₹2 coins = 2 × x = 2x

⇒ Value of ₹5 coins = 5 × x = 5x

⇒ Total Amount = x + 2x + 5x = 8x

⇒ 8x = 184

⇒ x = 184 ÷ 8

⇒ x = 23

∴ The correct answer is 23.

Additional Information

Total Value Calculation

Total Value = (n₁ × v₁) + (n₂ × v₂) + ... where n is the number of coins and v is the face value.

Ratio of Coins

If the ratio of the number of coins is a : b : c, the ratio of their values is (a × v₁) : (b × v₂) : (c × v₃).

Unitary Method for Coins

When the quantity is equal, find the total value of one set and divide the total amount by this value to find the count of each type.

Calculation:

Alcohol quantity in 50 liter mixture = 50 × 10/100 = 5 Litre

Let the quantity of alcohol added = x liters

According to question

⇒ (5 + x)/(50 + x) = 40%

⇒ (5 + x)/(50 + x) = 40/100

⇒ x = 25 liter

Calculation:

Let the average age of 25 members be = x

Sum of ages of new members = Y 

Sum of 25 members Age = 25x

Age of replaced two member = 64 + 40 = 104

According to the question

⇒ 25x - 104 + Y = (x - 2) 25

⇒ 25x - 104 + Y + 25x - 50

⇒  Y = 54

So, the Average of new members = 54/2

 = 27

Calculation:

Given, P = 3300, SI = 1980 and T = 5 years

⇒ SI = (p × r × t)/100

⇒ 1980 = (3300 × 5 × r)/100

∴ r = 12%

Calculation:

Let SP of 1 cap = 1

So, SP of 30 caps = 30

We know that,

SP - CP = Profit

⇒ 30 -CP = 3

⇒ CP = 27

Profit % = (SP - CP)/CP × 100

= (30 - 27)/27 × 100

= 3/27 × 100

= 11.11%

Calculation:

SP of the article = 2397

Discount offered on the article = 15%

Marked price × (1 - Discount/100) = Selling Price

∴ Marked price = 2397 × 100/85 = 2820

Given: 

3√2 + √18 + √50 = 15.55

Calculation:

⇒ 3√2 + 3√2 + 5√2 = 15.55

⇒ 11√2 = 15.55

⇒ √2 = 15.55/11

Now, √32 + √72

⇒ 4√2 + 6√2

⇒ 10√2

Putting the value of √2

So, 10 × 15.55/11 = 14.13

Calculation:

X and Y together can complete a work = 12 days

Y alone can complete the same work = 30

Let X alone can complete the same work = x days

⇒ 1/x + 1/30 = 1/12

⇒ 1/x = 1/12 - 1/30

⇒ 1/x = (30 - 12)/(30 × 12)

∴ x = 20 days

Calculation:

Speed of the train = 81 km/hr

Length of the train = 600 m

Let the length of the platform = x m

The train crossed the platform = at 40 sec

⇒ Speed = (Distance)/(time )

⇒ 81 × 5/18 = (600 + x)/40

⇒ x = 300 m

∴ Length of the platform = 300 meters

Partner E has made the second highest investment = 60 Lakh

∴ total investment = 20 + 50 + 10 + 40 + 60 + 20 + 100 = 300 lakhs

E invest in business = 60

∴ measure of central angle of the sector representing of partner E = 60/300 × 360 = 72°

Total investment = A + B + C + D + E + F + G = 20 + 50 + 10 + 40 + 60 + 20 + 100 = 300

And, Investment of C = 10 lacks

Total investment : investment of C = 300 : 10 = 30 : 1

∴ C’s share = 1 × 45/30 = 1.5 lakhs

Calculation:

The lengths of the first diagonal (d₁) = 7

The length of the second diagonal (d₂) = 24 cm

⇒ a² = (d₁/2)² + (d₂/2)²  (as diagonals of rhombus bisect at 90°)

⇒ a² = (7/2)² + (24/2)²

⇒ a² = 49/4 + 144

⇒ a² = √(625/4)

⇒ a = 25/2

∴ Perimeter of rhombus = 4 × a  = 4 × 25/2 = 50 cm

Calculation:

Perimeter of semicircle = πr + 2r

⇒ 36 = πr + 2r

⇒ 36 = (22/7 + 2) × r

⇒ 36 = 36/7 × r

⇒ r = 7 cm

Area of semicircle = 1/2 × πr²

= 1/2 × 22/7 × 7 × 7

= 77 cm²

Calculation:

Volume of hemisphere = 2/3 × πr³

⇒ 19404 = 2/3 × 22/7 × r³

⇒ r³ = 9261

⇒ r³ = 21 × 21 × 21

⇒ r = 21

The radius of hemisphere (r) = 21 cm

∴ Diameter of hemisphere = 21 × 2 = 42 cm

Calculation:

(tan60° - 1/3)

= √3 - 1/3

= (3√3 - 1)/3

Calculation:

Given, sin U = 24/25

Sin U = (Perpendicular)/hypotenuse = VW/UW = 24/25

Let VW = 24k and UW = 25k

By Pythagoras' theorem

UV² = UW² - VW²

⇒ 0.7² = (25k)² - (24)²

⇒ 0.7² = 625k - 576k

⇒ 0.49 = 49k²

⇒ k² = 0.49/49 = 0.01

⇒ k = 0.1

Thus, length of side VW = 24k = 24 × 0.1 = 2.4 cm

The Bretton Woods Agreement is the landmark system for monetary and exchange rate management established in 1944. It was developed at the United Nations Monetary and Financial Conference held in Bretton Woods, New Hampshire, from July 1 to July 22, 1944. Under the agreement, currencies were pegged to the price of gold, and the U.S. dollar was seen as a reserve currency linked to the price of gold.

The correct answer is April, 1957.

Key Points

• India change the decimal system of coinage in April 1957.
• In 1957, India shifted to the decimal system, but for a short period, both decimal and non-decimal coins were in circulation.
• To distinguish between the two, the coins minted between 1957 and 1964 have the legend “Naya Paisa” (“new” paisa).
• The denominations in circulation were 1, 2, 5, 10, 20, 25, 50 paise, and 1 rupee.

The correct answer is Satpath Brahmana.

Key Points

• A commentary on the sukla (white) Yajurveda is found in the Satpath Brahmana.
• It is credited to Yajnavalkya, a Vedic guru.
• It is said to be the most comprehensive, organized, and significant of the Brahmanas.
• It includes thorough explanations of Vedic mythology, symbolism, and sacrifice procedures.
• As the source of various Puranic stories and the incarnations of the RigVedic god Vishnu, the Shatapatha Brahmana is also seen as important in establishing Vaishnavism.
• This Vedic texts mentioned the eastern and western seas for the first time.

Additional Information

• Tandya Brahmana:
• It is a Samaveda Brahmana that is a part of both the Kauthuma and Ranayaniya shakhas.
• Gopath Brahmana:
• ​The only Brahmana related with the Atharvaveda is the Gopatha Brahmana, a category of prose books outlining Vedic ceremonies.
• Kaustiki Brahmana:
• ​An old Sanskrit work called the Kaushitaki Upanishad is part of the Rigveda.

Syed Mir Hassan was a scholar of the Qur'an, Hadith, Sufism, and the Arabic language in the court of Alauddin Khilji.

Alauddin Khilji was one of the most powerful rulers of the Khalji dynasty that ruled the Delhi Sultanate in the Indian subcontinent.

• Jupiter is the fifth planet from the Sun and the largest in the Solar System.
• It is a giant planet with a mass one-thousandth that of the Sun, but two-and-a-half times that of all the other planets in the Solar System combined.
• Jupiter is the fastest spinning planet about its axis.
• It completes one rotation about its axis in about 10 hrs whereas Earth takes about 24 hours.

Bangladesh and India share a 4,156 km long international border. India shares its longest international border with Bangladesh. Indian State West Bengal with 2217 Km shares longest border with Bangladesh amongst all the states.

Ramananda was a 14^th century Vaishnava devotional poet saint, in the Ganga river region of Northern India.

The Hindu tradition recognizes him as the founder of the Ramanandi Sampradaya, the largest monastic Hindu renunciant community in modern times.

In response to the humanitarian crisis being faced on account of the large influx of refugees into Bangladesh, Government of India has decided to extend assistance to Bangladesh.

The relief material consists of items required urgently by the affected people, namely rice, pulses, sugar, salt, cooking oil, tea, ready to eat noodles, biscuits, mosquito nets etc.

The Dronacharya Award, officially known as Dronacharya Award for Outstanding Coaches in Sports and Games, is sports coaching honour of the Republic of India. The award is named after Drona, often referred as "Dronacharya" a character from the Sanskrit epic Mahabharata of ancient India.

Roshan Lal is the latest recipient of Dronacharya award. He was awarded in 2017.

The correct answer is Bhutan.

Key Points

• The national flag of Bhutan has a dragon on it.
• The current flag is divided diagonally from the lower hoist-side corner, with the upper triangle yellow and the lower triangle orange.
• Centered along the dividing line is a large black and white dragon facing away from the hoist side.
• The flag features a dragon from Bhutanese mythology.
• It was adopted in 1969.

Additional Information

• Prime Minister of Bhutan - Lotay Tshering
• The population of Bhutan - 7.63 lakhs
• The religion of Bhutan - Tibetan Buddhis

A thermoplastic, or thermos softening plastic, is a plastic material, a polymer that becomes pliable or mouldable above a specific temperature and solidifies upon cooling.

Polyvinyl chloride (PVC) is a tough, lightweight material that is resistant to acids and bases. Much of it is used by the construction industry, such as for vinyl siding, drain pipes, gutters and roofing sheets.

The correct answer is Chlorine.

Key Points

• The element with the highest electron affinity among halogens is Chlorine (Cl).
• Chlorine the group 17th element has the highest electron affinity, also called as halogen represented by X.
• Chlorine is an electronegative element with one electron less than noble gas configuration and a bigger size enough to gain an electron more easily.
• The outermost orbital of Chlorine is a 3p orbital, there is more space, and the electrons in this orbital are inclined to share this space with an extra electron. Therefore, chlorine has a higher electron affinity.
• Hence, Chlorine has the highest electron affinity in the periodic table.

Option 4 is correct, i.e. High Court of State.

• Under Article 226, a writ petition can be filed in a High court for issuing one of the five writs as per the case.
• The Supreme Court is considered as the protector and guarantor of the fundamental rights(Article 32).

Municipal Corporations are the governing bodies present in the cities with population more than a million.

The Mayor is the head of the municipal corporation, but the role is largely ceremonial as executive powers are vested in the City Corporations commissioner. The tenure of the Mayor is 5 years.

The correct answer is Cilia.

Explanation:

Paramecium is a genus of unicellular ciliates, commonly studied as a representative of the ciliate group.

A paramecium has thousands of cilia that rhythmically move, providing a way for the food to move around and transfer the food in the oral cavity.

Additional InformationThere are different types of protozoans: ameboid, ciliated, flagellated, and sporozoan.

• Ameboid protozoans
• They are found in moist soil and freshwater/ seawater.
• They capture their prey by putting out pseudopodia also called false feet.
• An example is Amoeba.
• Amoeba also has a contractile vacuole, it is an osmoregulatory organ.
• The contractile vacuole controls the intracellular water balance by expelling excess water from the body.
• Flagellated protozoans
• They have flagella as a locomotory organ.
• They can be free-living or parasitic.
• An example is Trypanosoma. It causes sleeping sickness.
• Ciliated protozoans
• They are aquatic and actively moving organisms because of the presence of locomotory organs called cilia.
• The cilia help in the movement of water along with the food inside the body cavity.
• An example is Paramoecium. It has a dimorphic nucleus.
• It has one small nucleus called a micronucleus and one large nucleus called a macronucleus.
• Sporozoans
• They have an infectious spore-like stage in their life cycle.
• An example is Plasmodium. It causes malaria in humans.

The correct answer is Haemoglobin.

Key Points

• The Hemoglobin molecules with the help of external chemical factors take up oxygen molecules in the lungs and then send them to the various tissues of our body.
• Iron is the main constituent of hemoglobin.
• The normal level of hemoglobin is 13 to 17 grams per deciliter in men and 12.0 to 15.5 grams per deciliter in women.

Important Points

• Melanin is a dark biological pigment found in skin, hair, feathers, scales, eyes, and some internal membranes.
• Rhodopsin is called visual purple, a pigment-containing sensory protein that converts light into an electrical signal.
• Bilirubin is a yellowish substance in your blood. It forms after red blood cells break down, and it travels through your liver, gallbladder, and digestive tract before being excreted.

Additional Information

• The biggest regulator of oxygen affinity in Hemoglobin is the oxygen itself.
• If in the lungs, the oxygen levels are high the Hemoglobin shows a greater affinity towards the oxygen molecules, and as it bounds to more oxygen, this property of affinity increases and vice versa.
• When the Oxyhemoglobin binds to the maximum capacity, it becomes saturated but its affinity towards oxygen increases whereas when this binding loose oxygen molecule the affinity decreases.
• This regulation activity is called Cooperativity and is an important function as it allows the maximum amount of Hemoglobin to be carried to the tissues and also allows deoxyhemoglobin which is releasing the oxygen tissue.

The Reserve Bank of India rolled out a Sovereign Golds Bonds Scheme on 9^th October, 2017, under which it issues the bonds on behalf of the Government of India. The bonds are sold at post offices and banks and issued in denomination of gram.

The Beidou-3M/G/I satellites represent the orbital segment of the third phase of the Chinese Beidou navigation system which uses satellites in Medium Earth Orbit and Geosynchronous Orbit and is also known as the Compass Navigation Satellite System

The Long March 3B also known as the CZ-3B and LM-3B, is a Chinese orbital carrier rocket. Introduced in 1996, it is launched from Launch Area 2 and 3 at the Xichang Satellite Launch Centre in Sichuan.

The Wholesale Price Index (WPI) is the price of a representative basket of wholesale goods.

India has adopted new Consumer price Index to measure inflation since it considers the price at which the final consumer purchases essential consumer goods.

The Real Estate (Regulation and Development) Act, 2016 is an Act of the Parliament of India which seeks to protect home-buyers as well as help boost investments in the real estate industry.

The Act establishes Real Estate Regulatory Authority (RERA) in each state for regulation of the real estate sector and also acts as an adjudicating body for speedy dispute redressal.

The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second. The wavelength is the spatial period of a periodic wave which is basically the distance over which the wave's shape repeats. It is thus the inverse of the spatial frequency.

An order of magnitude is an approximate measure of the size of a number, equal to the logarithm rounded to a whole number.

For example, the order of magnitude of 1500 is 3, because 1500 = 1.5 × 10³

• Humidity is the amount of water vapour present in the air. Water vapour is the gaseous state of water and is invisible to the human eye.
• Humidity indicates the likelihood of precipitation, dew, or fog.

An electronic book (or e-book) is a book publication made available in digital form, consisting of text, images, or both, readable on the flat-panel display of computers or other electronic devices.