SSC CHSL 2017 PYQs

Question 1

Improve the bracketed part of the sentence.The passengers (were waited) for the flight at the  emigration lobby, for long

Accepted Answer

The phrase "for long" indicates an action that started in the past and continues up to the present, requiring the present perfect continuous tense. Thus, "have been waiting" is correct.

Question 2

Select the synonym of inscription

Accepted Answer

An 'inscription' is writing carved into a surface. To 'engrave' means to carve words or designs onto a hard surface. Thus, 'engrave' is the closest synonym.

Question 3

If(8x−4)=(3x+6), then the numerical value of(x+1)3is

Accepted Answer

First, solve the linear equation 8x - 4 = 3x + 6 to find x. This gives 5x = 10, so x = 2. Then substitute x = 2 into (x+1)³ to get (2+1)³ = 3³ = 27.

Question 4

To travel 780 km, an Express train takes 8 hours more  than Rajdhani. If however, the speed of the Express train is doubled, it takes 6 hours less than Rajdhani. The  speed (in km/hr) of Rajdhani is

Accepted Answer

The error is in the phrase '8 hours more than Rajdhani'. When comparing time, 'more' should be followed by 'than' for a correct comparison. The sentence structure implies a comparison of time taken.

Question 5

To cover a distance of 333 km in 2 hours by a car, what should be the average speed of the car (in meter/second)?

Accepted Answer

First, calculate speed in km/hr: 333 km / 2 hr = 166.5 km/hr. Then convert to m/s by multiplying by 5/18: 166.5 * (5/18) = 46.25 m/s.

Question 6

Select the antonym of deep-seated

Accepted Answer

Deep-seated means firmly established or ingrained. The opposite is something that is not permanent or lasting, which is 'temporary'.

Question 7

If the amount received at the end of 2nd and 3rd year at compound interest on a certain Principal is Rs 30250, and Rs 33275 respectively, what is the rate of interest?

Accepted Answer

The difference between the amounts at the end of the 3rd and 2nd year is the interest for the 3rd year on the 2nd year's amount. Calculate this difference and divide by the 2nd year's amount to find the rate.

Question 8

cot−11π∕6is equals to

Accepted Answer

The value of cot(π/6) is √3. Therefore, cot⁻¹(√3) is π/6. The question asks for cot⁻¹(1/(π/6)), which simplifies to cot⁻¹(6/π). This is not a standard value, but if the question intended cot⁻¹(cot(π/6)), the answer would be π/6. Assuming a typo and it meant cot(π/6), the answer is √3.

Question 9

10% discount is offered on an item. By applying a promo code the customer wins 20% cash back. What is the effective discount?

Accepted Answer

Assume item price is 100. After 10% discount, price is 90. 20% cashback on 90 is 18. Total discount is 10 + 18 = 28. Effective discount is 28%.

Question 10

Select the synonym of deprive

Accepted Answer

To 'deprive' means to prevent someone from having something. 'Dispossess' means to deprive someone of land, property, or other possessions. Thus, they are synonyms.

Question 11

When a discount of 20% is given on an African safari ticket, the profit is 43%. If the discount is 28%, then the profit is

Accepted Answer

Assume CP=100. With 43% profit, SP=143. Since 20% discount is given, MP = SP / (1-0.20) = 143 / 0.8 = 178.75. If discount is 28%, new SP = 178.75 * (1-0.28) = 178.75 * 0.72 = 128.7. New profit = 128.7 - 100 = 28.7%.

Question 12

If 5x + 2 > 3x + 1 and 4(x - 4) - 2 ≤ 3x - 1, then x can take which of the following values?

Accepted Answer

Solve the first inequality: 5x + 2 > 3x + 1 gives 2x > -1, so x > -0.5. Solve the second: 4x - 16 - 2 ≤ 3x - 1 gives x ≤ 17. Combining these, -0.5 < x ≤ 17. Only 16 satisfies this range.

Question 13

Δ ABC and Δ DEF are similar triangles. Length of AB is 10 cm and length of the corresponding side DE is 6 cm. What is the ratio of Perimeter of ΔABC to ΔDEF?

Accepted Answer

For similar triangles, the ratio of their perimeters is equal to the ratio of their corresponding sides. So, Perimeter(ABC) : Perimeter(DEF) = AB : DE = 10 : 6 = 5 : 3.

Question 14

Rearrange the parts of the sentence in correct order.Do not be anxious aboutP-thanksgiving, present your requests to GodQ-and petition, withR-anything, but in every situation, by prayer

Accepted Answer

The sentence starts with 'Do not be anxious about'. 'anything' (R) logically follows this. Then, 'but in every situation, by prayer' (R) sets up the next action. 'and petition, with' (Q) connects to 'thanksgiving, present your requests to God' (P). Thus, RQP forms a coherent sentence.

Question 15

the following question, out of the four alternatives, select   the alternative which best expresses the meaning of the idiom/phrase.graveyard shift

Accepted Answer

The idiom 'graveyard shift' refers to a work period that typically runs through the late night and early morning hours, often from midnight to 8 AM.

Question 16

Select the antonym of horrify

Accepted Answer

Horrify means to cause great fear or shock. Soothe means to gently calm a person or their feelings. Thus, 'soothe' is the direct antonym.

Question 17

A missile travels at 1440 km/h. How many metres does it travel in one second?

Accepted Answer

To convert km/h to m/s, multiply by 5/18. So, 1440 * (5/18) = 80 * 5 = 400 metres. Thus, the missile travels 400 metres in one second.

Question 18

The value of x for which the expressions 5x + 3 and 7x - 3 become equal is

Accepted Answer

Set the two expressions equal: 5x + 3 = 7x - 3. Subtract 5x from both sides to get 3 = 2x - 3. Add 3 to both sides: 6 = 2x. Divide by 2 to find x = 3.

Question 19

A bank offers 20% compound interest per half year. A customer deposits Rs 7600 each on 1st January and 1st July of a year. At the end of the year, the amount he  would have gained from interest is

Accepted Answer

The first deposit earns interest for two half-years: 7600 * (1.2)^2 = 10944. The second deposit earns interest for one half-year: 7600 * 1.2 = 9120. Total amount is 10944 + 9120 = 20064. Total principal is 7600 + 7600 = 15200. Interest gained is 20064 - 15200 = 4864.

Question 20

Select the synonym of gaudy

Accepted Answer

Gaudy means extravagantly bright or showy, typically so as to be tasteless. Therefore, 'showy' is the closest synonym.