SSC CHSL Previous Paper 23 (Held On: 14 March 2018 Shift 2) (Previous Year Paper)

The correct answer is 3

Key Points

Reading the given sentence we find that:

• The error lies in part C of the sentence
• In part C of the sentence, the usage of 'biogeography' is incorrect. Instead, we should use 'biogeographically.'
• In the given sentence we need an adverb at the end to give a whole meaning to the sentence.
• Here the adverb gives the proper as to where the evolution took place i.e it happened biogeographically.
• Hence the correct answer is biogeographically which is an adverb.

So the correct sentence is: The evolutionary history of penguins is well-researched and represents a showcase of evolution biogeographically.

The correct answer is 1

Key Points

Reading the above sentence we find that:

• The error lies in the first part of the sentence.
• Here the preposition 'by' is incorrect and should be replaced with 'with'.
• In the above sentence, the manner or attitude in which the person heard something is mentioned.
• The correct preposition that indicates this manner or attitude is 'with'. 
• Example: The people shouted with pleasure.

​Thus the error lies in the first part and therefore, it is the correct answer. 

The correct sentence is: It was with real sorrow that I heard this morning of your great loss. 

Additional Information

• The uses of preposition with
• With means ‘in the same place as someone or something’ or ‘accompanying’:
• For example: She arrived with her boyfriend.
• With often follows adjectives which refer to reactions and feelings:
• For example: Are you happy with your music lessons?
• We use with to refer to what we use to do something:
• For example: They opened the package with a knife.
• We use with to mean ‘having’ or ‘possessing’:
• For example: It’s the house with the really big gates.
• We use with to mean ‘because of’ or ‘as a result of’. This is especially common in speaking:
• For example: With all this work, I’d better stay in tonight.

The correct answer is Terrified. 

Key Points

Let's look at the meaning of the given words. 

• Terrified​: Cause to feel extreme fear.
• Moisturised: Make something less dry.
• Embarrassed: Feeling or showing embarrassment.
• Sweating: Exuding sweat profusely.

Important Points 

From the given meanings only the word terrified fits the sentence contextually. 

• Angela was terrified of that big mansion.
• Which means that she was extremely scared of the big mansion.

Thus the correct answer is Terrified.

The correct answer is Nothing:

Key Points

Reading the above sentence we find that:  

• The sentence aims to say that to achieve something one needs enthusiasm and interest.
• Thus without enthusiasm and interest, nothing can be achieved.
• Hence in the given sentence, we should start it with a negative word as the sentence talks about what can be achieved without enthusiasm and interest.
• Therefore the correct answer is Nothing.

The correct sentence is: Nothing great was achieved by an individual without enthusiasm and interest.

The correct answer is Eject.

Key Points

• Let's look at the meanings of the given word and the correct option:
• Jettison: To drop or get rid of something; to omit or forgo something. 
• Example: The station has jettisoned educational broadcasts.
• Eject: To throw something out; to get rid of something. 
• Example: Small splatters of molten lava were ejected from the crater.
• Thus form the given meanings we find that both the words express similar meanings.
• Hence, the correct answer is Eject.

Additional Information

• Let's look at the meanings of the other given options.
• Keep: Have or retain possession of. 
• Example: Do you want this photograph back or can I keep it?
• Embrace: Hold in one's arm; to accept something.  
• Example: This was an opportunity that he would embrace.
• Retain: Continue to have; or keep possession of. 
• Example: She has lost her battle to retain control of the company.

The correct answer is Productive.

Key Points

Let's look at the meanings of the given word and the correct option.

• Prolific: Present in a large number of quantities.
• Productive: Producing or able to produce a large number of quantities.

Thus from the given meanings, we find that both the words express similar meanings. 

Hence the correct answer is Productive. 

Additional Information

Let's look at the meaning of the other given words.

• Dead: No longer alive; not showing any activity or growth.
• Famous: Known by many people.
• Evidence: The available body of facts or information to support something.

The correct answer is Compensate.

Key Points

Let's look at the meaning of the given word and the correct option. 

• Purloin: To steal something.
• Compensate: To give someone something.

From the above meanings, it is clear that both the words express the opposite meanings. 

Thus the correct answer is Compensate. 

Additional Information

Let's look at the meaning of the other given options. 

• Steal: Take without permission.
• Filch: Pilfer or steal in a casual way.
• Lift: Pick up and move to a different position.

The correct answer is Plain

Key Points

Let's look at the meaning of the given word and the correct option. 

• Florid: Excessively intricate or elaborate.
• Plain: Not decorated or elaborate; simple or basic in character.

Thus from the given meanings, we find that both these words have the opposite meanings. 

Therefore the correct answer is Plain. 

Additional Information

Let's look at the meanings of other words. 

• Flowery: Covered with flowers or having a floral design.
• Pretentious: Attempting to impress by affecting greater importance or merit than is actually possessed.

The correct answer is RPQ

Key Points

Reading the above-given statements we find that: 

• Statement R is the first statement as it gives meaning and carries forward the given phrase The economic.
• That is The economic empowerment of women.
• The next statement to follow R is P. P gives more meaning to the statement R.
• It tells us specifically which women are to be empowered.
• That is 'women of a country...'
• The next statement to follow P is Q. Q gives more meaning to the statement R.
• It tells us what the empowerment of women of a country leads to.
• That is the 'growth of that country'

Thus the correct answer is RPQ

The economic empowerment of women of a country leads to exponential growth of that country.

The correct answer is She was terrified by the commotion. 

Key Points

Reading the above sentence we find that it is in the Active voice.  

• While changing the sentence to Passive voice we have to reverse the subject and the object of the sentence.
• The subject in the given sentence is commotion and the object is her.
• Reversing both the subject and the object we get the sentence:
• Her changes to She and becomes the new subject.

Thus the correct sentence will be: She was terrified by the commotion.

The correct answer is I asked Ajay if he would lend me some money. 

Key Points

 Reading the above sentence it is clear that

• A question is being asked here, thus said to changes to asked.
• 'You' changes to 'he' and 'will' changes to 'would'
• Thus we get the sentence: "I asked Ajay if he would lend me some money"

Thus the correct answer is option 3.

The correct answer is Medieval

Key Points

 Medieval: Relating to the middle ages. 

Apart form the word Medieval all the other words are spelt incorrectly. 

Thus the correct answer is Medieval.

The correct answer is With 

Key Points

Reading the above sentence: 

• We understand that a preposition which conveys the meaning 'a relation to something' is the most appropriate.
• Out of the given options only the preposition with expresses such a meaning.
• With: In relation to (something)
• Example: Wisdom comes with age.
• Therefore the correct sentence will be 'remain in harmony with one another'
• That means to be in harmony with relation to one another.

Thus the correct answer is With

The correct answer is Not.

Key Points

Reading the full sentence we find that: 

• A word expressing a negation should be used here.
• And since the word is following the verb should it should
• "At the very least, they should _______ treat each other as enemies."
• Not is the only adverb here that can give proper contextual and grammatical meaning to the sentence.

Thus the correct answer will be: At the very leas, they should not treat each other as enemies.

The correct answer is By

Key Points

Reading the above statement we find that:  

• By is used to introduce an agent in the sentence.
• Out of the given options by is the most appropriate option as it introduces polarising citizens.
• It gives proper contextual and grammatical meaning to the statement. 
• Example: Malaria can be controlled by attacking the parasite

Thus the correct answer is by.

The correct sentence will be: 'hope to thrive by polarising citizens.

The blank is to be filled by a noun. The only possible choice is 4) Incompatibility ((of two things) so different in nature as to be incapable of coexisting) is the correct answer.

When you say history of, you have already stated that it's in the past. You don't need to use the past tense again. Rule out 3). Clearly, the blank will fill in with a verb => rule out 4). Option 4) Promoting is the correct answer.

The correct answer is An apparent misfortune that eventually has good results. 

Key Points

Let's look at the meaning of the given idiom. 

• Blessing in disguise: an apparent misfortune that eventually has good results.
• Example: Being omitted from the World Cup squad was a blessing in disguise.

Thus from the given meaning, it is clear that the correct answer is option 2.

The correct answer is An image of a subject conveys its meaning more effectively than a description does.

Key Points

Let's look at the meaning of the idiom given. 

A picture paints a thousand words means a picture will be far more descriptive of something than words can ever be. 

From the given meaning it is clear that the correct answer is option 1

The correct answer is Proletariat. 

Key Points

Let's look at the meaning of the given options. 

• Opulent: Ostentatiously costly and luxurious.
• Proletariat: Working-class people regarded collectively.
• Glided: Move with a smooth, quiet continuous motion.
• Affluent: Having a great deal of money.

​From the given meanings we find that the correct answer is Proletariat.

The correct answer is Option 4)

Key Points

Let's look at the meaning of the given options: 

• Obeisance: deferential respect
• Panegyric: a public speech or published text in praise of someone or something
• Homage: special honour or respect shown publicly
• Tirade: a long, angry speech of criticism or accusation

​Thus, the correct answer is Tirade

The correct answer is 'No improvement'.

Key Points

• The sentence is in past tense, and we know this by the phrase 'he saw'.
• Also the pronoun 'he' which is singular is referring to 'The Buddha'.
• 'The Buddha' singular subject, needs a singular verb 'was' and not 'were'.
• Thus, the correct sentence- The Buddha was consumed by the human suffering that he saw all around him.
• Hence, the correct answer is option 4.

Additional Information

• Consumed - to engage fully; engross; someone can be said to be consumed by/with a feeling if that feeling is extremely strong.
• For Example - We were consumed with joy and relief, as well as profound gratitude.

Whenever we use must, all tenses take have. Simple present tense is being used here => hurt. Option 1) Have hurt is the correct answer.

Water = singular. Thus, water stop plunging will be incorrect. A can't be first. Water many people doesn't make sense. B can't be first either. Option 2) CAB is the only possible choice.

Rest assured that water in the Nohkalikai falls will not stop running if there are too many people around.

The correct answer is Scrupulous

Key Points

Out of the given options only Scrupulous is spelt correctly. 

• Scrupulous: (of a person or process) careful, thorough, and extremely attentive to details 
• Example: The research has been carried out with scrupulous attention to detail.

Thus the correct answer is Scrupulous.

As people go to hospital for treatment similarly, people go to school for education.

Hence, the related word pair is ‘School : Education’.

Note: Pair of ‘Place and Work’ is given so option 3 ‘Justice : Court’ will not be the answer as here the pair of ‘Work and Place’ is given.

The pattern followed here is,

13 : 171

→ (13)² + 2 = 171

Similarly,

17 : ?

→ (17)² + 2 = 291.

Hence, the related number is ‘291’.

The pattern followed here is,

PTR : NRP

→ P - 2 = N, T - 2 = R, R - 2 = P

Similarly,

 WTV : ?

→ W - 2 = U, T - 2 = R, V - 2 = T

Hence, the related letters are ‘URT’.

Here, the word ‘Direction’ is odd as except this all other options (West, South, and South - West) are names of different directions.

Hence, the correct answer is "Direction".

The pattern followed here is,

First Number + 1 = Second Number

Applying the above logic to each option, we get

1. 23 - 24 → 23 + 1 = 24

2. 25 - 26 → 25 + 1 = 26

3. 27 - 28 → 27 + 1 = 28

4. 29 - 27 → 29 + 1 = 30 ≠ 27

Thus, 29 - 27 does not follow the logic and it is the odd one out.

Hence, the correct answer is, "29 - 27".

The pattern followed here is,

1. SRQP:

2. JIHG:

3. VUTS:

4. ZYXV:

Thus, ZYXV does not follow the logic and it is the odd one out.

Hence, the correct answer is ‘ZYXV’.

Dictionary order:

1. Dispel
2. Dispute
3. Disrupt
4. Dissent
5. Distinct

So, the correct dictionary order is ‘1, 2, 5, 4, 3’.

Hence, the correct answer is, "12543".

The pattern followed here is,

 Thus, the missing number in the series is 41

Hence, the correct answer is, "41".

Table showing the positional value of the letter in alphabetical series.

The pattern followed here is,

Thus, the missing letters in the series are ‘U, Y’.

Hence, the correct answer is, "U, Y".

The following diagram shows the displacement of Rajnish,

Thus, Rajnish is 20 km away from his starting point.

Hence, the correct answer is, "20".

Checking each option, we get

1. Nine → Nightingales → can be formed.

2. Gales → Nightingales → can be formed.

3. Eight → Nightingales → can be formed.

4. Novel → Nightingales → cannot be formed as there is no 'V' and 'O'.

Thus, ‘Novel’ cannot be formed.

Hence, the correct answer is, "Novel".

Table showing the positional values of letters in alphabetical series,

Given that, ‘TALCS’ is coded as follows,

Similarly, ‘SPARK’ will be coded, 

Thus, ‘SPARK’ will be coded as ‘MTCRU’.

Hence, the correct answer is, "MTCRU".

Given equation: 2 ÷ 12 - 6 + 20 × 4 = ?

On changing symbols, we get,

2 - 12 + 6 × 20 ÷ 4

⇒ 2 - 12 + 6 × 5

⇒ 2 - 12 + 30

⇒ 32 - 12

⇒ 20

Hence, the answer is ‘20’.

Given equation: 18 × 12 - 6 ÷ 5 + 4 = 35

1. on interchanging ‘+ and ×’ we get,

18 + 12 - 6 ÷ 5 × 4 = 35

18 + 12 - 6 ÷ 5 × 4

⇒ 18 + 12 - 4.8

⇒ 30 - 4.8

⇒ 25.2 ≠ 35

2. On interchanging ‘+ and ÷’ we get,

18 × 12 - 6 + 5 ÷ 4 = 35

18 × 12 - 6 + 5 ÷ 4

⇒ 216 - 6 + 1.25

⇒ 217.25 - 6

⇒ 211.25 ≠ 35

3. On interchanging ‘- and +’ we get,

18 × 12 + 6 ÷ 5 - 4 = 35

18 × 12 + 6 ÷ 5 - 4

⇒ 216 + 1.2 - 4

⇒ 213.2 ≠ 35

4. On interchanging ‘÷ and -’ we get,

18 × 12 ÷ 6 - 5 + 4 = 35

18 × 12 ÷ 6 - 5 + 4

⇒ 18 × 2 - 5 + 4

⇒ 36 - 5 + 4

⇒ 40 - 5

⇒ 35 = 35

Thus, ÷ and - satisfies the given equation.

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

The pattern followed here is,

8*9 = 36

⇒ (8 ÷ 2) × 9

⇒ 4 × 9 = 36

 14*6 = 42

⇒  (14 ÷ 2) × 6

 ⇒ 7 × 6 = 42

Similarly,

 18*6 = ?

⇒ (18 ÷ 2) × 6

⇒ 9 × 6 = 54

Hence, the answer is ‘54’.

In the given series position of ‘B’ is two step backwards(i.e. second place towards left)

AABAAAA → BAAAAAA → AAAAABA → AAABAAA → ABAAAAA → AAAAAAB

Hence, the next term in the series will be ‘AAAAAAB’.

The following diagram shows the displacement of that goods carrier,

Distance between the starting point and the ending point:

⇒ 38 - 23 = 15 km

So, the carrier is towards the west and 15 km away from the starting point.

Hence, the correct answer is, "15 km West".

The least possible Venn Diagram for the given statements is as follows,

Conclusion I: All brooms are mops → Does not follow. (As all mops are brooms but all brooms are mop is a possibility)

Conclusion II: All mops are brooms → follows. (As all mops are brushes and all brushes are brooms, thus all mops are broom is definite).

Thus, only conclusion II follows.

Hence, the correct answer is, "Only conclusion II follows".

Designers who are not gardeners are represented by the area bounded by the circle excluding the area bounded by the triangle.

So, the figure representing the required area is shown below,

Thus, ‘D, E, F’ represent Floral designers who are not Gardeners.

Hence, the correct answer is, "D, E, F".

Table showing the positional value of the letters in alphabetical series,

The pattern followed here is,

Thus, the missing terms are ‘XYQ’. 

Hence, the correct answer is, "XYQ".

The pattern followed here is,

So, the missing number in the series is ‘106’.

Hence, the correct answer is, "106".

The logic followed here is,

Second Number = (First Number)²

Third Number = (First Number)³

Checking each option for the above logic, we get

1. (4, 16, 64)

⇒ 4² = 16; (4)³ = 64

2. (5, 25, 125)

⇒ (5)² = 25;  (5)³ = 125

3. (6, 36, 216)

⇒ (6)² = 36; (6)³ = 216

4. (7, 49, 243)

⇒ (7)² = 49; (7)³ = 343 ≠ 243

Thus, the odd pair is ‘(7, 49, 243)’.

Hence, the correct answer is, "(7, 49, 243)".

Image of the object when the mirror is placed horizontally below the object is shown below

Hence, the correct answer is, "Option 1".

The formation of the cube from the unfolded cube is shown below,

And the faces opposite are shown below,

Thus, Option 1, shown below, is not possible as the face with the star and the face with five circles should be opposite to each other.

Hence, the correct answer is "option 1".

Checking each option with reference to the pattern mentioned in the question, we get

1. 42, 79, 23, 57 → B, T, K, V

2. 24, 86, 20, 85 → F, O, E, V

3. 76, 96, 40, 88 → Q, U, I, Z

4. 31, 78, 34, 88 → H, Z, M, Z

Thus, ‘QUIZ’ will be represented by ‘76, 96, 40, 88’.

Hence, the correct answer is, "76, 96, 40, 88".

Given:

The sum of the proper fraction and its reciprocal is 61/30.

Calculation:

Let the proper fraction be x/y and its reciprocal be y/x

According to the Question

x/y + y/x = 61/30

⇒ (x² + y²)/xy = 61/30

Dividing numerators and denominators by y²

⇒ (x²/y² + 1)/(xy/y²) = 61/30

Let x/y = a

⇒ (a² + 1)/a = 61/30

⇒ 30a² + 30 – 61a = 0

Upon solving we get

a = 1.2 = 6/5 or, a = 0.83 = 5/6

a = x/y = 5/6

∴ The correct answer is 5/6.

Alternate MethodCalculation:

We can check the options  

Option 1

1/3 + 3/1 = 10/3

Option 2

5/6 + 6/5 = 61/30

It satisfies the given condition [No need to check other options in exam]

Option 3

3/10 + 10/3 = 109/30

Option 4

3/5 + 5/3 = 34/15

∴ 5/6 is the required fraction

Given:

The sum of four consecutive odd numbers is 208.

Calculation:

Let the consecutive odd numbers be x, x + 2, x + 4, x + 6

According to the question,

x + x + 2 + x + 4 + x + 6 = 208

⇒ 4x + 12 = 208

⇒ 4x = 208 – 12

⇒ 4x = 196

⇒ x = 196/4 = 49

∴ The largest odd number is x + 6 = 49 + 6 = 55

Additional InformationFour consecutive odd number.

x, x + 2, x + 4, x + 6

if we take x value odd number like 

x = 3 

3, (3 + 2), (3 + 4), (3 + 6)

3, 5, 7, 9

Given:

(-5x)/3 + 2 = x – 6

Calculation:

⇒ (-5x + 6)/3 = x – 6

⇒ –5x + 6 = 3x – 18

⇒ –5x –3x = –18 – 6

⇒ –8x = –24

⇒ x = 24/8 = 3

∴ Value of x is 3

Given:

Divya and Kriti have a total of 46 candies.

Calculation:

Let the number of candies with Kriti = x

Number of candies with Divya = 46 – x 

Number of candies with Divya = x + 10

According to the question,

⇒ x + 10 = 46 – x

⇒ 2x = 36

⇒ x = 36/2 = 18 candies

The number of candies with Divya = x + 10 = 28

∴ Divya has 28 candies with her

Given:

XY|| BC

∠XYB = ∠BYC

Calculation:  

BY is an angle bisector. 

∠BYC = ∠XYB   ----- (1)

And as XY is parallel to BC

∠BYX = ∠YBC    [alternate interior angles]     ----- (2)

From equation (1) and (2),

∠BYC = ∠YBC

BC = YC    [sides opposite to equal angles]

∴ The correct option is 2.

Given:

DE ∥ BC

AD = 3 cm; BD = 4 cm; AE = 4.4 cm and DE = 6 cm

Calculation:

In △ ADE and  △ ABC

⇒∠D = ∠B 

∠A is common,

△ ADE ~ △ ABC (Angle - Angle similarity)

Since both triangles are similar, the ratio of their respective sides are equal

AB = AD + BD = 3 + 4 = 7 cm

AD/AB = DE/BC

⇒ 3/7 = 6/BC

⇒ BC = 14 cm

∴ The correct answer is 14 cm.

Shortcut Trick

Let the Third number be 100.

Then, First number = 116.25 and Second number = 155.

Required percentage = (116.25 ÷ 155) × 100

⇒ 11625 ÷ 155 = 75%.

∴ The correct answer is 75%.

Alternate Method

Given:

First number is 16.25% more than the Third number.

Second number is 55% more than the Third number.

Formula Used:

Percentage = (Target Value ÷ Reference Value) × 100

Calculations:

⇒ Let the Third number be 100.

⇒ First number = 100 + 16.25% of 100 = 100 + 16.25 = 116.25

⇒ Second number = 100 + 55% of 100 = 100 + 55 = 155

⇒ Required Percentage = (First number ÷ Second number) × 100

⇒ Required % = (116.25 ÷ 155) × 100

⇒ Required % = (11625 ÷ 155) %

⇒ Required % = 75%

∴ The correct answer is 75%.

Additional Information

Percentage Base Value

The number following 'than' or 'of' is usually taken as the base (denominator) in percentage comparison problems.

Decimal to Percentage

To convert a decimal to a percentage, multiply by 100. For example, 0.75 × 100 = 75%.

Relative Comparison

If A = x% of C and B = y% of C, then A as a percentage of B is (x ÷ y) × 100.

Given:

u : v = v : w

Calculation:

u : v = v : w

⇒ u/v = v/w 

⇒ v ² = uw

⇒ v ⁴ = (uw)² = u²w²

then,

u⁴ : v⁴ = u⁴ : u2w2

⇒ u2 : w2

∴ The correct answer is u2 : w2.

Given:

R's sum = 1,65,000

S's sum = 1,95,000

Calculation:

R : S = 165000 × 12 : 195000 × 12

⇒ 165 : 195 = 33 : 39

Profit Share of R = 11000

Let the total profit is x

Share of R = [33/ (33 + 39)] × x

⇒ x = 11000 × (72/33) = 24000

⇒ x = Rs.24000

∴ Total profit of both R and S is Rs. 24000.

Given:

The average of 12 numbers = 35

Concept used:

Sum of N number = average of N number × N

Calculation:

The average of 12 numbers = 35

The sum of 12 numbers = 12 × 35 = 420

Remaining average = [420 - (20 + 27 + 15 + 29)]/8 = 41.125

∴ Average of the remaining 8 numbers is 41.125

Given:

Principal = Rs.3000

Rate = 20%; Time = 3 years

Formula used:

(C.I - S.I) for 3 years = P × (R/100)2  × (3 + R/100)

We know that,

⇒ (C.I – S.I) = 3000 × (20/100)² (3 + 20/100)

⇒ 3000 × (1/25) × (320/100)

⇒ Rs.384

∴ Difference for 3 years between C.I and S.I is Rs.384

Alternate Method

Formula used: 

S.I = (P × R × T)/100

C.I = P[{1 + (r/100)}ⁿ - 1]

Calculation:

S.I = (3000 × 20 × 3)/100

⇒ S.I = Rs. 1800

C.I = 3000[(1 + 20/100)³ - 1]

⇒ C.I = 3000[(6/5)³ - 1]

⇒ C.I = 3000 × (91/125)

⇒ C.I = 2184

Difference = 2184 - 1800 = Rs.384

∴ Difference for 3 years between C.I and S.I is Rs.384

Calculation:

Original weight of rice = 1 kg = 1000 gm

Let cost of 1 gm is Rs. 1

Cost price of 1000 gm = Rs. 1000

The selling price of 850 gm = Rs. 1000 (∵ giving only 850 gm instead of 1000 gm)

Profit = [error/ (true weight)] × 100

⇒ Profit = [(1000 - 850)/ 850] × 100

⇒ (150/850) × 100 = 17.65%

∴ Profit % on 5 kg is equal to the profit of 1 kg which is 17.65%.

Given:

Marked Price = Rs.7200

Discount = 37.5%

Formula used:

S.P = M.P × {1 - (d/100)}

Calculation:

Selling price = 7200 × [(100 - 37.5)/100]

Selling price = 7200 × (62.5/100) = Rs. 4500

∴ Selling price of the fan is Rs.4500

Calculation:

⇒ $2\sqrt[3]{{243}}; + ;3\sqrt[3]{9}; + ;\sqrt[3]{{1125}}$

$\Rightarrow ;2\sqrt[3]{{27; \times 9;}}; + ;3\sqrt[3]{9}; + ;\sqrt[3]{{125; \times 9}}$

$\Rightarrow ;6\sqrt[3]{{9;}}; + ;3\sqrt[3]{9}; + ;5\sqrt[3]{9}; = ;14\sqrt[3]{{9;}}$

∴ The correct answer is $14\sqrt[3]{{9;}}$ .

Given:

24 men can repair a road in 50 days.

Concept used:

(M1 × D1)/W1 = (M2 × D2)/W2

Calculation:

According to the question

Since the work is the same in both the cases hence it is taken as 1

⇒ (24 × 50)/1 = [(24 + 16) × D2]/1

⇒ D2 = (24 × 50)/40 = 30 days

∴ The road can be repaired in 30 days.

Given:

Speed of first motorcycle = 38 km/h

Speed of second motorcycle = 88 km/h

Distance between two motorcycles = 126 km

Concept used:

Distance = relative speed × time

Calculation:

Relative speed between the two motorcycles = (88 + 38) = 126 km/hr

The motorcycles will be colliding after a time which is given by: 126/126 = 1 hour = 3600 sec.

In m/sec = 126× 5/18 = 35 m/sec

In 3600 sec distance travelled by motorcycle 1 = 38000 meters

In 3600 sec distance travelled by motorcycle 1 = 88000 meters

After 3599 secs, distance covered by motorcycle 1 (d1) = 38000 – 38000/3600

After 3599 secs, distance covered by motorcycle 2 (d2) = 88000 – 88000/3600

So, the distance between 2 motorcycles is

⇒ 126000 – (d1 + d2) = 126000 – 126000 + 126000/3600 = 35 m

∴ The correct answer is 35 m.

Shortcut TrickCalculation:

Relative speed between the two motorcycles = (88 + 38) = 126 km/hr

The motorcycles will be colliding after a time which is given by: 126/126 = 1 hour = 3600 sec.

In m/sec = 126× 5/18 = 35 m/sec

The distance (in metres) between the two motorcycles = 35 meter

(∵ They travel 35 meter in1 second)

∴ The correct answer is 35 meters.

Calculation:

It is clear from the bar graph that the second lowest sales of Television were for brand F.

∴ The correct option is 4.

Calculation:

From the bar graph:

Sales of A = 170000

Sales of E = 340000

Ratio of the sales of E to A is 340000 ∶ 170000 = 2 ∶ 1

∴ The correct answer is 2 : 1.

Calculation:

Sales of brand B = 280000

Sales of brand G = 300000

⇒ Difference = 300000 – 280000 = 20000

Sales of brand B were less than that of brand G by = (20000/300000) × 100 = 6.67%

∴ The correct answer is 6.67%.

Calculation:

Total sales of all seven brands = (170 + 280 + 380 + 340 + 340 + 190 + 300) × 1000 = 2000000

Total tax to be paid = (12/100) × 2000000 = 240000

∴ The correct answer is 240000.

Given:

Area of rhombus = 60 cm²

Length of one diagonal (d1) = 8 cm

Formula used:

Area Of rhombus = (d1 × d2)/2

Calculation:

Area Of rhombus = (d1 × d2)/2

⇒ 60 = (8 × d2)/2

⇒ d2 = 60/4 = 15 cm

∴ Length of another diagonal is 15 cm

Given:

Radius of semi-circle = 7 cm

Formula used:

Area of semi–circle = (πr²)/2

Where r is the radius of the circle

Calculation:

Area of semicircle = (π × 7²)/2

⇒ (22 × 7 × 7)/14 = 77 cm²

∴ Area of semicircle is 77 cm².

Given:

Side of a cube = 3.5 cm

Formula used:

Total surface area of cube = 6a²

Where, a = side of the cube

Calculation:

Total surface area = 6a2

⇒ 6 × 3.5 × 3.5 = 73.5

∴ Total surface are of cube is 73.5 cm².

Concept used:

Calculation:

⇒ (1/√3 + cot60⁰)

⇒ 1/ (√3) + 1/ (√3)

⇒ 2/√3

∴ value is 2/√3.

Given:

∠B = 90° 

Cot C = 24/7 

Calculation:

cot C = 24/7 = Base/ Perpendicular

By Pythagoras Theorem:

H² = P² + B²

⇒ H² = (7)² + (24)²

⇒ H = √[(7)² + (24)²]

⇒ H = √(576 + 49)

⇒ H = √625

⇒ H = 25 cm

So, Cosec C = H/ P = 25/7

∴ The correct answer is 25/7.

Buyer’s market denotes the place where the supply exceeds the demand. In this type of market, the buyers have the advantage of price negotiation. If the demand exceeds the supply then such type of market situation is called Seller’s market.

• Karnataka is the state with a maximum production of coffee in India with approximately 71% share of the total produce.
• Kerala is second with 21% of total share while Tamil Nadu is third with 5% share.
• Country with the maximum production of coffee is Brazil.

Intermontane plateau refers to those plateaus which are surrounded by mountains. They are the highest plateaus of the world. Plateau of Tibet, Columbia Plateau, and Bolivian Plateau are the example of the intermontane plateau.

Tawa River is the tributary of Narmada river. It is the longest tributary of Narmada river. Its origin is in the Satpura range. It meets the Narmada at Hoshangabad district. Its length is 172 km.

The Sanskrit poet Rajshekhar lived in the court of Mahendrapala I. He wrote the Kavyamimamsa. It is a practical guide for poets in which he has explained the elements and composition of a good poem. He is best known for his play ‘Karpuramanjari’.

Akbar started 'Jharokha Darshan'. It was a means to address the public audience at the balcony at forts and palaces. It facilitated face-to-face communication with the public. This practice was abolished by Aurangzeb as he considered it a non-Islamic practice.

Hariprasad Chaurasia is a world-famous flute player.

India has signed an agreement in September 2017 for co-operation in the health sector with Norway. It is done through Norway India Partnership Initiative (NIPI). Both the countries will co-operate to achieve Sustainable Development Goals and will align with development goals of India as outlined in its National Health Policy, 2017. 

Javed Akhtar was honored with the "Hridaynath Mangeshkar Award-2017" in October 2017. He is a veteran writer and lyricist. This award was presented to him at an event in Mumbai. The event marked the 28th anniversary of Hridayesh Arts and the 80th birthday of veteran music composer Hridaynath Mangeshkar.

Pakistan is located in the North-West of India. The capital of Pakistan is Islamabad with Karachi as its largest city. 

Explanation:

We know that,

Atomic Number = Number of Protons/ Electrons

Here, Atomic Number = 10

Thus, No. Of Protons = 10

Mass Number = Number of Protons + Number of Neutrons

Here, Mass Number = 23

Number of Protons + Number of Neutrons = 23

Number of Neutrons = 23 – 10 = 13

∴ Number of Protons = 10 and Number of Neutrons = 13

the correct answer is the fuel is not burning completely.

Key Points

• While cooking, if the bottom of the vessel is getting blackened on the outside, it means that the fuel is not burning completely.
• Sometimes, due to a lack of oxygen, the fuel does not burn completely.
• When the fuel does not burn completely then a sooty flame appears which makes the bottom of the utensil black.
• At the point when fuel doesn't consume appropriately, it starts to form incomplete burning fumes or black fumes that store on the base surface of the pot.

Additional Information

• When a hydrocarbon fuel is fully burned in oxygen, it produces mainly carbon dioxide and water.
• Incomplete combustion:- It is defined as a reaction that does not convert all the carbon and hydrogen into water or carbon dioxide.
• This kind of burning possibly happens when there is deficient oxygen to permit fuel different mixes to separate from carbon monoxide.

The correct answer is Article 370.

Key Points

• Temporary Provisions with respect to the state of Jammu and Kashmir are given in Article 370 of the Indian Constitution.
• On October 17, 1949, Article 370 was added to the Indian Constitution.
• Special provisions provided under Article 370 are

1. The state is allowed to have its own Constitution, flag, and anthem.
2. This article can be amended only upon the recommendation of the State's Constituent Assembly.
3. The citizens enjoyed Fundamental Rights different from the rest of the country.
4. Article 360 i.e financial emergency was not applicable to the state.
5. Article 35A was also a part of it.

Additional Information

• On 5th August 2019, Article 370 was ended.
• All the special provisions provided under it were declared null and void.
• The Jammu and Kashmir Reorganisation Bill 2019 passed by the Parliament divides the state of J&K into two new Union Territories - Jammu & Kashmir and Ladakh.

The correct answer is Habeas Corpus.

Key Points

• Habeas Corpus can be issued against any private individual.
• Habeas Corpus in simple terms means to have a body'.
• It is a type of writ which is issued under Article 32.
• Other writs mentioned in the same article are

1. Mandamus- command to perform a public duty.
2. Prohibition- command to the court to stop proceedings.
3. Certiorari- issued by the court to transfer a case.
4. Quo-warranto- issue to inquire the legality of a claim of a public officer.

• It is issued by the court.

Epithelial tissue forms a lining all over the body of the organism in order to protect the inner lying parts. They act as a barrier that keep the different body systems separate. Cuboidal epithelial tissue forms the lining of kidney tubules and ducts of salivary glands, where it provides mechanical support.

The correct answer is Chitin.

Key Points

• Chitin is a naturally occurring biopolymer, which is a polymer created by an organism.
• Chitin is the second most abundant natural biopolymer in the world, behind only cellulose.
• Chitin is found in the exoskeletons of insects, the cell walls of fungi.
• Chitin is also found in the cell walls of certain fungi and algae.
• Chitin forms a rigid cell wall between cells, which help the organisms retain their shape.
• Chitin is not a protein but is similar to protein.
• Chitin behaves similarly to keratin.
• Chitin is made up of amino sugars.
• Chitin is a biodegradable molecule that dissolves over time.
• Chitin is a large, structural polysaccharide made from chains of modified glucose.
• Structure of Chitin:

​

Additional Information

Piyush Goyal launched the ‘Grahak Sadak Koyla Vitaran App’, in November 2017. It aims to benefit customers of Coal India Limited (CIL) by lifting coal through road. It will enhance transparency in the system of loading programme and despatch. Piyush Goyal is the Union Minister of Railways & Coal.

3200 Phaethon is the name of the asteroid that causes Geminid meteor shower display around 15 December of every year. 3200 Phaethon is an Apollo Asteroid and it is believed that it might have undergone a collision with another object in the distant past to produce the stream of particles that Earth, which we call the meteor shower. When it approaches Sun, it sheds a huge amount of rock and dust in its path and Earth happens to pass that path every year during December 4-16.

RBI planned to make Legal Entity Identifier (LEI) compulsory for companies having aggregate exposure over Rs. 5 crore in October 2017. LEI is a unique 20 digit alphanumeric code used for global reference. It uniquely identifies every legal entity or structure that is party to a financial transaction, in any jurisdiction.

On January 16, 2018, the Supreme Court ruled the attacks and interference on adults opting for inter-caste marriage as ‘absolutely illegal’ in the petition filed by Shakti Vahini NGO in 2010. The court was hearing a 2010 petition by NGO Shakti Vahini against khap panchayats seeking directions to the centre and state governments for preventing honour crimes.

The correct answer is 4.

Key Points

We know that,

Force = mass × acceleration

8 = 2 × acceleration

Acceleration = 4 m/s²

An object having a capability to do work is said to possess energy. The SI unit of energy is joule (J). There are various forms of energy like Kinetic energy, Potential energy, Chemical energy, Mechanical energy, Heat energy etc.. And according to the law of Conservation of Energy, energy can neither be created nor destroyed, it can only be converted from one form to another.

The ozone layer protects us from harmful Ultraviolet rays of the sun. It is present in Earth’s Stratosphere. It absorbs 97 to 99 percent of the Sun's medium-frequency UV light. It is being depleted continuously by chlorofluorocarbons (CFCs). 16 September is celebrated as the International Day for the Preservation of the Ozone Layer.

• In 2017, Michael Carrick captained the Premier League team Manchester United. Thus, statement A is correct.
• Ryu So-Yeon (South Korea) won the Golf 2017 ANA Inspiration. Thus, statement B is wrong.
• In 2018 IPL auctions, Kings XI Punjab retained Axar Patel. Thus, statement C is wrong.