SSC CGL Undated PYQs

Question 1

If 9@3=12; 15@4=22; 16@14=4; then what is the value of 6@2=?

Accepted Answer

The pattern is (A - B) × 2. For 9@3, (9-3)×2 = 12. Similarly, for 6@2, (6-2)×2 = 4×2 = 8.

Question 2

Which of the following device is used to measure humidity?

Accepted Answer

A hygrometer is a scientific instrument specifically designed to measure the amount of water vapor or humidity in the air. Meanwhile, a hydrometer measures the specific gravity of liquids.

Question 3

Select the related number from the given alternatives. 0.02 : 0.002 :: 1/3 : ?

Accepted Answer

The pattern is dividing the first number by 10 to get the second. 0.02 / 10 = 0.002. Similarly, dividing 1/3 by 10 gives 1/30.

Question 4

In the following question, select the related number from the given alternatives. ACOUSTIC : 91 : : RENOUNCE : ?

Accepted Answer

The number represents the sum of the alphabetical positions of the letters. For RENOUNCE: R(18) + E(5) + N(14) + O(15) + U(21) + N(14) + C(3) + E(5) = 95.

Question 5

Δ ABC is right angled at B. If m∠A = 60°, then what is the value of 2 Sec C x 1/2 Sin A?

Accepted Answer

Since ∠B = 90° and ∠A = 60°, ∠C = 30°. The expression becomes 2 sec(30°) × 1/2 sin(60°) = 2(2/√3) × 1/2(√3/2) = 1.

Question 6

What will be the net discount (in %) of two successive discounts of 15% and 35%?

Accepted Answer

Use the successive discount formula: x + y - (xy/100). Here, 15 + 35 - (15 × 35)/100 = 50 - 5.25 = 44.75%.

Question 7

What is the sum of the first 12 terms of an arithmetic progression if the 3rd term is -13 and the 6th term is -4?

Accepted Answer

Given a+2d=-13 and a+5d=-4. Solving these gives d=3 and a=-19. The sum of the first 12 terms is 6[2(-19) + 11(3)] = 6[-38+33] = -30.

Question 8

Select the odd word from the given alternatives. SSC CGL 2017 TIER I AUGUST 20, 2017 SHIFT 2 QUESTION PAPER

Accepted Answer

Hills, valleys, and mountains are natural geographical landforms of the earth. Trees are living plants that grow on these landforms, making 'Trees' the odd one out.

Question 9

The ﬁnal boundary between the Earth and the outer space is called _____.

Accepted Answer

The magnetopause is the abrupt boundary between a planet's magnetic field (magnetosphere) and the solar wind. It acts as the final frontier separating Earth from deep outer space.

Question 10

A few organisms can tolerate and thrive in a wide range of temperatures. Such organisms are called ___________.

Accepted Answer

Eurythermal organisms can survive and thrive across a broad range of temperatures. In contrast, stenothermal organisms are restricted to a very narrow temperature range.

Question 11

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice. The class is required to watch a video tutorial every day.

Accepted Answer

The original sentence uses 'is required to watch', indicating a passive structure with an infinitive. The correct passive conversion maintains this structure: 'is required to be watched'.

Question 12

What is the compound interest (in Rs) for 1 year on a sum of Rs 20000 at the rate of 40% per annum compounding half yearly?

Accepted Answer

Half-yearly rate is 20% and time is 2 cycles. Effective rate = 20 + 20 + (20*20)/100 = 44%. Compound interest = 44% of 20000 = Rs 8800.

Question 13

Accepted Answer