SSC CHSL Previous Paper 43 (Held On: 22 March 2018 Shift 3) (Previous Year Paper)

The correct answer is- 'Constitute'

Key Points

• 'Constitute' is a 'verb' and it means 'to be one of the parts that form something.'
• Example: Women constitute a high proportion of part-time workers.

Here, the correct spelling is- Constitute

The correct answer is- 'BCA'

Key Points

• In the started sentence 'The smoke rises and' it is ended with the verb 'rises' and the conjunction is using 'and' so that 'verb' will come but in the sentence, C- 'tree-tops and' is not started with the verb so it can be easily eliminated here.
• And B part 'gets trapped in the' is suitable according to the context of the paragraph.
• The paragraph does not end with an article 'the' or conjunction 'and'. So, options 1, 2 & 4 are eliminated.

Thus, option 3 is the correct answer.

The correct answer is- 'will be surprised'

Key Points

• Using 'will be surprised' in place of 'will being surprised' to make the sentence correct.
• We know that 'will' is a helping verb that takes the first form of the verb(V₁) after it.
• 'Be' is the base form of the verb and when the verb 'be' is used it is followed by V₃

The correct sentence is- You will be surprised to learn that some leading philosophers have supported immoral views.

The correct answer is- 'No improvement'

Key Points

• There is no improvement is required in the given sentence in the question.
• In the first option, we know that 'has' never be used with 'I', we use 'have' with it.
• In the second option, 'am' is a helping verb of continuous tense so that need to put V₁+ing after it.
• In the third option, 'had' is a helping verb of the perfect tense so that need to put V₃ after it.
• Clearly, we can say there is no need for improvement in this sentence.

The correct sentence is- I had been a unique case of slow learning.

The correct answer is- 'Epitome'

Key Points

• 'Epitome' is a noun and it means 'a perfect example of something.'
• Example: Her clothes are the epitome of good taste.

Hence the option 1 is the most appropriate answer here.

The correct answer is- 'Felonious'

Key Points

• 'Felonious' is an adjective and it means 'relating to or involved in crime.'
• Example: They turned their felonious talents to the smuggling trade

Hence option 4 is the most appropriate answer here.

The correct answer is- 'Slightly unwell or in low spirits.'

Key Points

• 'Under the weather' is an idiom and it means 'If someone is or feels under the weather, they feel ill.'
• Example: She was sufficiently under the weather to have to pull out of the competition.

Hence option 2 is the most appropriate answer here.

The correct answer is- 'To gradually accept a sad situation.'

Key Points

• 'Come to terms with something' is an idiom and it means 'to learn to understand and accept something.'
• Example: He made little effort to come to terms with his critics.

Hence option 4 is the most appropriate answer here.

The correct answer is- 'reflect'

`

Key Points

• Here, verbs should be used, and do/does takes Verb in verb 1st form.

Hence, reflect is the most appropriate answer.

The correct answer is- 'leads'

Key Points

• 'disparity' is a singular noun and it means 'a great difference' So, according to subject-verb agreement, a singular verb should come with a singular subject.

Thus, leads is the most appropriate answer here.

Additional Information

• We don't use 'led' because the passage is in the present tense.

The correct answer is- 'these'

Key Points

• Here, the correct determiner is to be used. 'Pieces of news' is a plural noun, hence plural determiner 'these' should be used.

Thus, option 4 is the most appropriate here.

Additional Information

• We do not use the article 'the' here because already subject news is defined earlier in the passage, so we need to point this further.

The correct answer is- 'with'

Key Points

• The context explains that news articles are creating violence and they do not show the reality which is wrong with the people around the world.
• Let's find out the uses of the following prepositions:- 
• At- to show age, exact time, temporary mood.
• To- for the destination.
• With- in relation to.
• Into- when there is a change in form or motion.
• Clearly, the preposition 'with' gives an appropriate meaning.

Thus, option 3 is the most appropriate answer here.

The correct answer is- 'or' 

Key Points

• On looking at the above-given passage, we observe that it is based on how articles or news are shown to create violence in society and does not show what is actually going on around the world.
• The first blank is related to the paired conjunction (either...........or). Since 'either' is already given, thus it should be followed by 'or'.

Thus, option 2 is the correct answer.

The correct answer is- 'Maintenance'

Key Points

• 'Maintenance' is a noun and it means 'keeping something in good condition.'
• Example: This house needs a lot of maintenance.

Here, the correct spelling is- Maintenance

Additional Information

• The synonyms of Maintenance are- 'fix, reparation, upkeep, service'.
• The antonyms of Maintenance are- 'unchain, unwire, unstable, unpin'.

The correct answer is- 'The Queen was deeply affected and asked the old woman what she could do for her.'

Key Points

• In the question, direct speech is given and we need to change into indirect speech. Since a question is asked in inverted commas that too is in the present form of the modal verb.
• So, change 'can' into a past form that is 'could'.
• When a question is represented with wh-word, so conjunction 'if/whether' is not used.

Hence, option 2 is the most appropriate answer here.

Additional Information

• Word 'majesty' is not given in direct speech. So, there is no need of adding it in indirect speech.

The correct answer is- 'A bag was handed to him by her.'

Key Points

• In the given question the sentence 'She handed him a bag.' is in 'Active voice' which is in the past indefinite and we know that after converted this sentence into 'Passive voice' the tense will same which also should in past indefinite.
• Past indefinite:
• Sub + V2 + object (Active)
• Object + was/were + V3 + by + subject (Passive)
• Example:
• Reema cleaned the floor (Active)
• ​The floor was cleaned by Reema (Passive)

Hence the correct answer is- A bag was handed to him by her.

The correct answer is- 'PRQ'

Key Points

• Clearly, In the started sentence 'The orbital motion' ends with a noun, and 'Q' starts with the noun too so the answer can't be started from 'Q'.
• So that, options 1 & 2 are eliminated and option 3 shows that there are uncertain rates of earth, but the rate of something is related to some object/person activity, not to itself. Hence, option 3 is also incorrect.

Thus, option 4 is the correct sequence here.

The correct answer is- 'Honest'

Key Points

• 'Cozen' is a verb and it means 'trick or deceives.' and the opposite word of 'Cozen' is 'Honest'.
• Example: he was able to cozen a profit

Hence the correct opposite word is Honest.

The correct answer is- 'Unite'

Key Points

• 'Secede' is a verb and it means 'withdraw formally from membership of a federal union, an alliance, or a political or religious organization.' and the opposite word of 'Secede' is 'Unite'.
• Example: The kingdom of Belgium seceded from the Netherlands in 1830.

Hence the correct opposite word is Unite.

The correct answer is- 'Happy'

Key Points

• 'Jubilant' is an adjective and it means 'feeling or expressing great happiness and triumph' so that the similar word of 'Jubilant' is 'Happy'.
• Example: a large number of jubilant fans ran on to the pitch

Hence the correct similar word is Happy.

The correct answer is- 'Scold'

Key Points

• 'Reprove' is a verb and it means 'to criticize somebody or not approve of something that somebody has done' so the similar word of 'Reprove' is 'Scold'.
• Example: He was reproved for obscenity.

Hence the correct similar word is Scold.

The correct answer is- 'of'

Key Points

• Using the preposition 'of' in the black space of the given sentence will make a meaningful sentence.
• We know that importance will take the preposition 'of' (of - expressing the relationship between a part and a whole.) after it. It is a kind of a fixed proposition here.
• Example: I always dreamed of being famous.

Hence the correct sentence is- We can never compare the importance of money with the importance of love.

Additional Information

• Let's find the uses of the following prepositions:-   
• For- period of something; related to a reason.
• With- indicating responsibility.
• About- on the subject of; concerning.

The correct answer is- 'has run off'

Key Points

• Using 'has run-off' in the blank space of the sentence will make a meaningful sentence.
• 'run-off' is a phrasal verb here and it means 'leave a place or situation suddenly.'
• Example: He ran off to join Napoleon's army and never returned.

Hence option 3 is the most appropriate answer here.

The correct answer is- 'error lies in the part-A'

Key Points

• Using 'predicted' in place of 'predict' to make the sentence correct.
• We know that 'have, has, had' are the helping verbs of perfect tense and they always take the third form of the verb(V₃).
• Structure of Present Perfect: Sub + has/have + V₃ + object
• Example: Ram has gone to market.

The correct sentence is- Experts have predicted that within ten years ethanol will emerge as the primary automatic fuel in the world.

The correct answer is- 'error lies in the part-1'

Key Points

• Remove the article 'a' from the first part to make the sentence correct.
• We know that articles are used to define a noun. But, kind is an adjective here so we can't use an article before it.

The correct sentence is- She has kind eyes with a beautiful face.

The logic used here,

River: Krishna → Krishna is a river.

Let's check each option,

1. Planet: Sun → Sun is not a planet.

2) Mountain: K2 → K2 is a mountain.

3. Moon: Satellite → Satellite is not a moon.

4. Earth: Grass → Grass is not an Earth.

Here, we can see that Option 2 satisfy the logic.

Hence, the correct answer is " Mountain: K2 ".

The logic followed here is:

Similarly,

Hence, the correct answer is " CSN: DTO ".

The logic used here,

→ ‘Boxing Gloves’ is used in Boxing. No specification about the type of gloves is given and Gloves (normal gloves) are not used in Boxing.

Hence, the correct answer is " Gloves - Boxing ".

The logic followed here,

→ Second Number = (First Number + 1)

Let's check each option as per the logic,

1) (13 - 14)

→ 14 = (13 + 1)

2) (15 - 16)  

→ 16 = (15 + 1)

3) (24 - 25)

→ 25 = (24 + 1)

4) (19 - 21)

→ 21 ≠ (19 + 1)  

Here, we can see that Only option 4 doesn't satisfy the logic.

Hence, the correct answer is " 19 - 21 ".

The pattern followed here is:-

As can be seen clearly, ‘NTY’ does not follows the same pattern as other three options.

Hence, the correct answer is "NTY".

Given:

1. Throttle  2. Tight  3. Time 4. Tier 5. Thrust

According to the sequence in the English dictionary:

The correct order of the given words is:

1. Throttle
2. Thrust
3. Tier
4. Tight
5. Time

Hence, the correct answer is " 15423 ".

The logic followed here is:

→ The terms are divided by 2 to get the next term of the series.

Hence, the correct answer is " 482 ".

The pattern followed here is:-

Hence, the correct answer is "X".

Distance = $\sqrt {{{10}^2} + {{16}^2}}$ km → $2\sqrt {89;}$ km

Hence, answer is 2√89, North-West.

Main cannot be formed using ‘Countermand’ because there is no ‘i’ in it.

Hence, the answer is ‘Main’.

The logic/rule followed here is:

Alphabets are replaced by their respective positional values.

Therefore, LOFTS is written as ‘121562019’ in that code language.

Given equation: 18 x 12 ÷ 5 - 10 + 10 =?

On replacing the symbols:

18 + 12 × 5 ÷ 10 - 10 =?

→ 18 + 6 - 10

→ 24 - 10

→ 14

Hence, the answer is " 14 ".

Given equation:

10 + 14 × 20 - 7 ÷ 10 = 40

Let's check each option,

1. + and ×

→ 10 × 14 + 20 - 7 ÷ 10 = 40

→ 160 - 7 ÷ 10 = 40

→ 159.3 ≠ 40

→ LHS ≠ RHS.

2. + and ÷

→ 10 ÷ 14 × 20 - 7 + 10 = 40.

→ 100 ÷ 7 - 7 + 10 = 40.

→ 100 ÷ 7 + 3 = 40.

→ 17.2 ≠ 40

→ LHS ≠ RHS.

3) ÷ and -

→ 10 + 14 × 20 ÷ 7 - 10 = 40.

→ 10 + 40 - 10 = 40.

→ 40 = 40.

→ LHS = RHS.

4. - and +

→ 10 - 14 × 20 + 7 ÷ 10 = 40

→ 10 - 280 + 7 ÷ 10 = 40

→ - 270 + 7 ÷ 10 = 40

→ - 269.3 ≠ 40.

→ LHS ≠ RHS.

Here, we can see that Only option 3 satisfy the equation.

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

The logic/rule followed here is:

12@18 = -3 → (12 - 18) ÷ 2 = -3

18@6 = 6 → (18 - 6) ÷ 2 = 6

16@8 = 4 → (16 - 8) ÷ 2 = 4

Similarly,

6@10 → (6 - 10) ÷ 2 = -2

Hence, the correct answer is " -2 ".

The logic used here,

→ The pair of Z is moving one place to its left in the subsequent terms.

Hence, the answer is " XZZYXYXY ".

According to the given information,

1. A cycles 3.5 km west.

2. Then turns to her right and cycles 7 km.

3. B cycles 1 km East.

4. Then turns North and cycles 7 km, then turns to her left and cycles 2 km.

Combining the distance and turns of both cyclists A and B, we get:

Here, we can see that B is 2.5 km in the East direction of A.

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

Conclusion I: Some towels are rags → True (As All napkins are towels and All rags are napkins)

Conclusion II: All rags are towels → True (As All napkins are towels and All rags are napkins)

Hence, the correct answer is " Both conclusions I and II follow ".

In the given figure, 

rectangle represents Pharmacists i.e. C, D, E and F

circle represents Lyricists i.e. A and H

triangle represents Cooks i.e. B, C, I and E

square represents Fathers i.e., E, F, G, H and I

So, CEF letters represents Pharmacists who are either Fathers or Cooks.

Hence, the correct answer is " CEF ".

The pattern followed here is:-

Hence, the correct answer is "NOG".

The pattern followed here is:-

Hence, the correct answer is "9".

The logic followed here is:

Second Number = (First Number + 3).

Third Number = (Second Number + 3).

Let's check each option as per the logic,

1. (31, 34, 37)

→ 34 = (31 + 3)

→ 37 = (34 + 3)

2. (43, 45, 48)

→ 45 ≠ (43 + 3) → Doesn't satisfy the logic.

→ 48 = (45 + 3)

3. (39, 42, 45)

→ 42 = (39 + 3)

→ 45 = (42 + 3)

4. (7, 10, 13)

→ 10 = (7 + 3)

→ 13 = (10 + 3)

Here, we can see that only Option 2 doesn't satisfy the logic.

Hence, the correct answer is " (43, 45, 48) ".

The correct answer is Constitutional institution.

Key Points

• The Finance Commission is constituted as a constitutional body under "Article 280".
• It is constituted by the President of India. The Finance Commission in India is constituted under the Finance Commission Act 1951.
• It is a quasi-judicial institution and has a term of 5 years.
• The central government appointed N.K. Singh, a former member of the Planning Commission, as the chairman of the 15th Finance Commission on 27 November 2017.
• The Finance Commission sets the rules for grant money to the states from the Center.
• In Article 243 (I) and 243 (Y) of the Constitution of India, the State Finance Commissions are constituted every five years according to the constitution.

Additional Information

• The first was the Finance Commission chaired by K. C. Niyogi (1952–1957).
• 13th Finance Commission headed by Dr. Vijay L. Kelkar (2010–2015).
• The 14th Finance Commission was headed by the former Governor of Reserve Bank of India Mr. Y.V. Reddy did.​

Hence, the correct answer is " Option 3 ".

When the unfolded cube is folded, the pair of opposite sides are,

 ⇔ 

 ⇔ 

 ⇔ 

Now, let's check each option,

1) 

 → Can be made.

2) 

 → Cannot be made because 

 and 

 should be the opposite sides.

3) 

 → Can be made.

4) 

 → Can be made.

Here, we can see that Only Cube in option 2 cannot be formed.

Hence, the correct answer is " Option 2 ".

The pattern followed here is:-

A letter is represented first by its row number of the matrix then by its column number of the matrix.

1. In 21,99,31,85

21 → F; 99 → P; 31 → A; 85 → U (So, the word formed is 'FPAU')

2. In 12,87,11,78

12 → B; 87 → X; 11 → F; 78 → V (So, the word formed is 'BXFV')

3. In 31,65,14,76

31 → A; 65 → R; 14 → F; 76 → S (So, the word formed is 'ARFS')

4. In 76,10,68,23

76 → S; 10 → I; 68 → N; 23 → E (So, the word formed is 'SINE')

Hence, the correct answer is "76,10,68,23".

Calculation:

Here we use elimination method for finding the square root of 1471369

The unit digit of no. 1471369 is 9

We have 4 options 1213, 1223, 1203 and 1233

We get unit digit 9 when we square a no. that is end with 3 or 7

Now we take the square of 1210 that is > 1203 and < 1213

⇒ (1210)² = 1464100

This value 1464100 < 1471369 so 1203 is eliminated

Now we take the square of 1220 that is > 1213 and < 1223

 ⇒ (1220)² = 1488400

∴ This value 1488400 > 1471369 so we can say that 1471369 is square of 1213

Concept used:

Total number of prime factors of  (x)^a × (Y)^b × (Z)^c is (a + b + c) where X, Y, Z are prime numbers

Calculation:

(9)¹¹ × (5)⁷ × (7)⁵ × (3)² × (17)²

⇒ (3²)¹¹ × (5)⁷ × (7)⁵ × (3)² × (17)²

⇒ (3)^{(22 + 2)} × (5)⁷ × (7)⁵ × (17)² = (3)²⁴ × (5)⁷ × (7)⁵ × (17)²

∴ Total number of prime factors = sum of the powers of the expression = 24 + 7 + 5 + 2 = 38

Concept used:

• If Y intercepts then X = 0 [ equation of Y axis is X = 0 ]

• The equation of the line joining the two points (X₁, Y₁) and (X2, Y₂) is $\frac{Y - Y_1}{Y_2 - Y_1} = \frac{X - X_1}{X_2 - X_1}$

Calculation:

Points given (X₁, Y₁) and (X₂, Y₂) = (1, 3) and (3, 5)

$⇒ {\rm{;Y - }}{Y_1}{\rm{; = ;}}\frac{{{Y_2} - {Y_1}}}{{{X_2} - {X_1}}}\left( {{\rm{X}} - {X_1}} \right)$

⇒ Y - 3 = (5 - 3) / (3 - 1) × (0 - 1)

⇒ Y - 3 = - 1

⇒ Y = 3 - 1 

⇒ Y = 2

∴ The correct answer is 2

Concept used:

If two lines a1x + b1y + c1 = 0 and a2x + b2y + c2 = 0 are parallel then $\frac{a_1}{a_2} = \frac{b_1}{b_2} \ne \frac{c_1}{c_2}$

Calculation:

Equation of 1^st line 4x + 4ky - 6 = 0

Compare the eq. with a₁x + b₁y + c₁ = 0

⇒ a₁ = 4, b₁ = 4k, c₁ = - 6

${m_1} = - \frac{{{a_1}}}{{{b_1}}} = - \frac{4}{{4k}} = - \frac{1}{k}$

Equation of 2^nd line x + 6y - 12 = 0

Compare the eq. with a₂x + b₂y + c₂ = 0

⇒ a₂ = 1, b₂ = 6, c₂ = - 12

${m_2} = - \frac{{{a_2}}}{{{b_2}}} = - \frac{1}{6}$

Condition for parallel lines is m₁ = m₂

$⇒ - \frac{1}{k} = - \frac{1}{6}$

⇒ k = 6

∴ The value of k is 6

In ΔPAB,

PB² = AB² + AP²

PB² = 8² + 6² = 64 + 36 = 100

⇒ PB = 10 cm

ΔPAB and ΔBQC are similar triangle.

So, AB/BC = AP/QC

⇒ 8/BC = 6/3

⇒ BC = 4 cm

In ΔBQC,

BQ² = BC² + QC²

⇒ BQ² = 4² + 3² = 25

⇒ BQ = 5 cm

∴ PQ = PB + BQ = 10 + 5 = 15 cm

Concept used:

According to Pythagoras theorem, 

Hypotenuse² = Perpendicular² + Base²

Calculation:

In triangle POR, PR² = OP² + OR²

⇒ PR² = 24² + 7² = 576 + 49 = 625

∴ PR = 25 cm

Calculation:

Valid votes of winning candidate = 70%

Valid votes of losing candidate = 30%

Difference of valid votes of winning and losing candidates = 70% - 30% = 40%

⇒ 40% = 9000

⇒ 10% = 2250

⇒ 100% = 22500 = total valid votes

∴ Total no. of votes polled = 22500 × 100/90 = 25000

Given:

(3/2) X = (5/7) Y = (6/5) Z

Calculation:

Divide the above eq. by the Lcm of their numerators

Lcm of their numerators = Lcm of (3, 5, 6) = 30

Divide the eq. by 30.

$\Rightarrow \frac{3}{{2; \times ;30}}X = \frac{5}{{7; \times ;30}}Y = \frac{6}{{5; \times ;30}}Z$

⇒ X/20 = Y/42 = Z/25

∴ X : Y : Z = 20 : 42 : 25

Calculation:

Quantity of water in the mixture = 30% of 7 litres = 2.1 litre

Quantity of milk in the mixture = 7 - 2.1 = 4.9 litres

New quantity of milk in the mixture after adding 3.5 litres of milk = 4.9 + 3.5 = 8.4 litres

Quantity of New mixture = 8.4 + 2.1 = 10.5 litres

∴ Percentage of water in new mixture = 2.1/10.5 × 100 = 20%

Concept used:

Average = (Sum of the no.) / (Quantity of no.)

Calculation:

⇒ 58.5 = (31 + x + 42 + 39 + 56 + 78 + 83 + 91) /8

⇒ 58.5 × 8 = 420 + x

⇒ 468 = 420 + x

∴ x = 468 - 420 = 48

Concept used:

Simple Interest. = (P × R × (T₂ - T₁))/100

Where, P = principal, R = rate and T₁, T₂ are time

Calculation:

S.I. = (P × R × (T2 - T1))/100

⇒ 25.8 = (P × 6 × (6 - 5))/100

⇒ 25.8 = (P × 6 × 1)/100

∴ P = (25.8 × 100)/6 = 430

Ratio of cost price and selling price = 32 : 37

∴ Profit % = (37 - 32) /32 × 100 = 5/32 × 100 = 15.625 = 15.63%

Solution:

Let the market price of the article is Rs. 100

Case I: Discount % = 10 + 10 - (10 × 10) /100 = 20 - 1 = 19%

Case II: Discount % = (Free item / total item )× 100

= 1/8 × 100 =12.5%

Case III: Discount % = (Free item / total item )× 100

= 1/10 × 100 = 10%

Hence, Case III scheme has the lowest discount percentage

Given:

x = (√2 + 1)/(√2 – 1)

y = (√2 – 1)/(√2 + 1)

Formula Used:

(x + y)2 = x2 + 2xy + y2,

(x – y)2 = x2 – 2xy + y2

(x + y) × (x – y) = x² – y²

Calculation:

x + y = [(√2 + 1)/(√2 – 1)] + [(√2 – 1)/(√2 + 1)]

⇒ [(√2 + 1)² + (√2 – 1)²]/(√2 – 1) × (√2 + 1)   

⇒ [2 + 1 + 2√2 + 2 + 1 – 2√2]/(2 – 1)

⇒ 6

∴ The value of x + y is 6.

Given:

X can complete 5/7 part of a work in 10 days.

Y can complete 3/4 part of the same work in 9 days.

Concept:-

Basic time and work concept.

Calculation:-

Time taken by X to complete 5/7 part of a work = 10 days

Time taken by X to complete the whole work = 10 × 7/5

⇒ 14 days

Time taken by Y to complete 3/4 part of a work = 9 days

Time taken by Y to complete the whole work = 9 × 4/3

⇒ 12 days

Total work = LCM of (12 and 14)

⇒ 84 units

Efficiency of X = 84/12

⇒ 7 units/day

Efficiency of Y = 84/14

⇒ 6 units/day

Efficiency of X + Y together = 7 + 6

⇒ 13 units/day

Total time taken by X + Y together to complete 13/21 part of the work = 84 × 13/21 × 1/13

⇒ 4 days

∴ In 4 days will both complete 13/21 part of the total work.

Calculation:

Time taken by train to reach B from A $= 5\frac{1}{2} = \frac{{11}}{2}$ hours

Distance travelled by the train = Speed × Time

∴ Distance travelled by the train = 30 × 11/2 = 165 km

As shown in the pie chart, the value of E is 60 lakhs which is least

∴ Answer is E

Total number of employees = Employees of states (A + B + C + D + E + F + G)

Total number of employees = 180 + 150 + 180 + 240 + 60 + 120 + 150

∴ Total number of employees = 1080

Total employees = 1080

Employees from state B = 150

∴ The central angle of the sector representing state B = 150/1080 × 360 = 50°

The average monthly salary = Rs 25000

Total salary = Average monthly salary × Total no. of employees

∴ Total salary = 25000 × 180 = 4500000 = 45 lakhs

Given:

The side of an equilateral triangle is 10 cm

Concept used:

Area of equilateral triangle is √3/4 × a², where a is the sides of the triangle

Calculation:

The area of the equilateral triangle is

⇒ √3/4 × 10² 

⇒ √3/4 × 100

⇒ 25√3 cm²

∴ The correct answer is 25√3 cm2

Concept used:

Let number of sides are N

Interior angle = 180° - (360°)/N

Calculation:

According to the question,

⇒ 108° = 180° - (360°)/N

⇒ (360°)/N = 180° - 108° = 72°

⇒ (360°)/(72°) = N

∴ N = 5

Given:

Diameter of cylinder = 21 cm

Radius of cylinder = 21/2 cm

Concept used:

The curved Surface area of cylinder = 2πrh,

Where r = radius, h = height

Calculation:

According to the question

⇒ 660 = 2 × 22/7 × 21/2 × h

⇒ 660 = 66 × h

∴ h = 10 cm

Concept used:

• cos60° = 1/2

Calculation:

1/√3 + cos60°

⇒ 1/√3 + 1/2

⇒ (2 + √3)/(2√3)

∴ The correct answer is (2 + √3)/(2√3)

Concept used:

• cos θ = base/hypotenuse

Calculation:

Cos A = 8/17 = AB/AC

⇒ Cot C = BC/AB =

⇒ Cot C = √(AC² - AB²)/AB

⇒ Cot C = √(17² - 8²)/8

⇒ Cot C = √(289 - 64)/8

⇒ Cot C = √225/8 

⇒ Cot C = 15/8

∴ The correct answer is 15/8

With everything else remaining equal, a greater money supply lowers market interest rates. Conversely, less money supply tends to raise market interest rates.

• This is because if money lenders keep the interest rates high, the debtors would go to other money lenders with lower interest rates as there is a large supply of money.
• So, to attract debtors, the money lenders reduce the interest rates.

• is a city in the Kongu Nadu region of the Indian state of Tamil Nadu
• is the fifth largest urban agglomeration and fourth largest city by area in Tamil Nadu.
• is a major textile and knitwear hub contributing to 90% of total cotton knitwear exports from India
• This textile industry provides employment to over six lakh people and contributed to exports worth ₹200 billion (US$3.0 billion) in 2014-15

Nephometer:

• An instrument designed to measure the amount of cloudiness
• It consists of a convex hemispherical mirror mapped into six parts.
• the amount of cloud coverage on the mirror is noted by the observer and then cloudiness is measured

• Loktak Lake is the largest freshwater lake in Northeast India.
• It is famous for the phumdis (heterogeneous mass of vegetation, soil, and organic matter at various stages of decomposition) floating over it.
• It is located near Moirang town in Manipur, India.

The correct answer is Nasiruddin Mahmud Shah.

Key Points

• Timur invaded India in the year 1398.
• Under the reign of 'Tughlaq Sultan Nasiruddin Mahmud Shah'.
• He invaded India to destroy and plunder the massive wealth of India.
• He attacked India to fight a "Holy war" against the infidels.
• To destroy the temples and the idols and make people believe in Islam.

The correct answer is Rampa Movement.

Key Points

• The Rampa movement was led by an outsider Alluri Sitarama Raju who is now a folk hero in Andhra Pradesh.
• Rampa is the region in the north of Godavari, which witnessed various uprisings during the nineteenth century.
• In 1916, it saw a revolt which introduced several guerrilla warfare in the region between August 1922 to May 1924.
• They were against the moneylenders and forest laws.
• The immediate spark came when a tahsildar was trying to construct a forest road with unpaid labour.
• Alluri Sitarama Raju was inspired by the Non-cooperation movement and admire Gandhi but he considered violence necessary to win the tribal goals.
• He was captured and killed in May 1924.

Additional Information Other important revolts and their leaders:

The correct answer is Kochi.

Key Points

• India's oldest European church is in Kochi.
• The name of the church is St. Francis Church.
• It was built in 1503.
• It has great historical significance as a mute witness to the European colonial struggle in the subcontinent.
• Vasco da Gama's body was originally buried in this church.

Additional Information

• The Portuguese explorer Vasco da Gama died in Kochi in 1524 when he was on his third visit to India.
• His body was originally buried in Saint Francis Church.
• After 14 years his remains were moved to Lisbon and are now located at Jeronimos Monastery.
• Saint Francis Church, in Fort Kochi (Fort Cochin), Kochi, originally built in 1503, is one of the oldest European churches in India.

World's First Carbon Capture Plant:

• Country - Iceland; Year-2017 (October)
• Nominated - "Direct air capture"
• There are machines that work like a tree, absorb carbon dioxide (CO2) out of the air
• Turning thousands of times more carbon and carbon dioxide into stone at the same time

The correct answer is Shyam Benegal.

Key Points

• Mumbai International Film Festival (MIFF) committee has decided to bestow V. Shantaram lifetime achievement Award to veteran film producer and director Shyam Benegal.
• He will be awarded a trophy, a cash price of 10 lakh rupees, a certificate and a shawl by Governor of Maharashtra C. Vidyasagar Rao.
• Benegal has been selected for his contribution to the promotion of the documentary movement.

The correct answer is Dhakeshwari Temple, Dhaka.

Key Points

• The National Temple of Bangladesh is Dhakeshwari Temple.
• It is located in the capital of Bangladesh, Dhaka.
• Dhakeshwari means "Goddess of Dhaka"
• It was built in the 12^th century by Ballal Sen, a king of the Sena dynasty.

Additional Information

• Bangladesh
• Capital: Dhaka
• Currency: Taka
• Prime Minister: Sheikh Hasina
• President: Abdul Hamid

Dobereiner triads:

• The atomic weight of the middle element is nearly the same as the average of the atomic weights of other two elements
• The atomic weight of:

Nitrogen (N) = 14 u

Phosphorus (P) = 30 u

Gold (Au) = 196 u

Hence, (N, P, Au ) is not a Dobereiner triad as the atomic weight of Phosphorus (P) is not the average of the atomic weight of Nitrogen (N) and Gold (Au)

The correct answer is No option is correct.

Key Points

• Metal:
• It is a type of solid substance that is usually hard and shiny through which electricity and heat can travel.
• It is a material that when freshly prepared polished or fractured shows a stressful appearance.
• Metal is typically ductile and malleable.
• In metal one molecular strongly associated with another molecule
• Non-Metal:
• A nonmetal is a chemical element that mostly lacks the characteristics of a metal. Those are the elements that form negative ions by accepting or gaining electrons.
• They are not conducting heat and electricity, they are good insulators of heat and electricity.
• They are not ductile.
• All non-metals are placed right side of the periodic table.
• In the extended modern periodic table total of 22 elements are non-metal.
• Graphite is an allotrope of carbon but a good conductor and hence an expectation among non-metals.
• Sulphur, Nitrogen and Oxygen are non metalls.

Additional Information

• Metalloids
• Most of their other physical properties and chemical properties are intermediate in nature.
• Typical metalloids have a metallic appearance.
• They are brittle and only fair conductors of electricity.
• Chemically, they behave mostly as nonmetals.
• They can form alloys with metals.
• They are lustrous in appearance.
• Their oxides are amphoteric or weakly acidic.​​

The correct answer is Tenth Schedule.

Key Points

• The 52nd Amendment of the Indian Constitution relates to Anti-defection Law.
• The 52nd Amendment Act of 1985 provided for the disqualification of the members of Parliament and the state legislature on the ground of the Deflection of one political party to another.
• The 10th Schedule of the Indian Constitution is designed to prevent political defections prompted by the lure of office, material benefits, or other considerations.
• The Anti-defection law was passed by Parliament in 1985 and was reinforced in 2002.
• The 10th Schedule of the Indian Constitution popularly referred to as the ‘Anti-Defection Law’ was inserted by the 52nd Amendment (1985) to the Constitution.
• ‘Defection’ has been defined as per the constitution as, “To abandon a position or association, often to join an opposing group”.
• The anti-defection law was enacted to ensure that a party member does not violate the mandate of the party or else on doing so he will lose his membership in the House.
• The law applies to both Parliament and state assemblies.
• The aim of the Anti-Defection Law is to prevent MPs from switching political parties for any personal motive.

The correct answer is Special Majority of Parliament and consent of States.

Key PointsThe election of the President of India and its manner can be amended by:

• Special Majority of Parliament
• It is not a simple majority as it includes a “Single Transferable Vote System”.
• Consent of States
• Because there is uniformity in the scale of representation of different states at the election of the president.
• One needs to get more than half of the valid votes to be elected as the president.

The correct answer is Fungi.

Explanation;

• Fungi are not capable of producing their own food, so they get their nourishment from other sources and appear like plants but are closely related to animals.
• They live everywhere. In water, on land, in the soil, and on or in plants and animals.
• The organisms in the kingdom fungi include mushrooms, yeasts, moulds, rusts, smuts, puffballs, truffles, morels, moulds etc.

SAATHI:

• Launched by “Ministries of Power and Textiles”
• Under this initiative, Energy Efficiency Services Limited (EESL), a public sector entity under the administrative control of Ministry of Power, would procure energy efficient Powerlooms, motors and Rapier kits in bulk and provide them to the small and medium Powerloom units at no upfront cost
• use of these efficient equipments would result in energy savings and cost savings to the unit owner
• a unit owner does not have to allocate additional expenditure for repayment as the repayments to EESL are made from the savings that come as a result of higher efficiency equipments and cost savings.

The correct answer is Geminid Meteor display.

Key Points

• 3200 Phaethon is the name of the asteroid that causes the 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 between December 4-16.
• The Geminid Meteor display is an annual meteor shower, with peak rates of about 120 per hour caused by the “3200 Phaethon asteroid” around 15 December of every year.
• It is named after the constellation Gemini, the point from which the meteors seem to radiate which was first noted as a minor meteor shower back in 1862.