SSC CGL Undated PYQs

Question 1

Which one of the following is also regarded as Disguised unemployment? ?

Accepted Answer

Disguised unemployment occurs when more people are employed than actually needed, making their marginal productivity zero. It is essentially a form of underemployment, commonly seen in Indian agriculture.

Question 2

In the following question, select the missing number from the given series. 6, 9 , 15, 24, 39, 63, ? 6, 9 , 15, 24, 39, 63, ?

Accepted Answer

Each number in the series is the sum of the two preceding numbers: 6+9=15, 9+15=24, 15+24=39, 24+39=63. Thus, the next number is 39+63=102.

Question 3

Which of the following gases is heavier than oxygen?

Accepted Answer

Oxygen (O2) has a molar mass of 32 g/mol. Carbon dioxide (CO2) has a molar mass of 44 g/mol, making it heavier. The others are lighter (NH3=17, CH4=16, He=4).

Question 4

A can do a work in 36 days and B in 12 days. If they work on it together, then in how many days will they be able to do the work?

Accepted Answer

Total work = LCM(36, 12) = 36 units. A's efficiency = 1 unit/day, B's efficiency = 3 units/day. Combined efficiency = 4 units/day. Time taken = 36 / 4 = 9 days.

Question 5

What is the SI unit of pressure?

Accepted Answer

The SI unit of pressure is Pascal (Pa), defined as one Newton per square meter. Newton is for force, Weber for magnetic flux, and Henry for inductance.

Question 6

Select the related word from the given alternatives. Father : Parent :: Sister : ?

Accepted Answer

A father belongs to the broader category of a parent. Similarly, a sister belongs to the broader category of a sibling. Therefore, sibling is the correct related word.

Question 7

The simple and compound interest that can be earned in two years at the same rate is Rs 4000 and Rs 4180 respectively. What is the rate (percent per annum) of interest?

Accepted Answer

SI for 1 year is Rs 2000. The difference between CI and SI for 2 years is Rs 180, which is the interest on the first year's SI. Rate = (180/2000) × 100 = 9%.

Question 8

What is the angular measure (in degrees) of the sector representing Country A?

Accepted Answer

To find the central angle, multiply Country A's fractional share from the pie chart by 360°. Based on the given data, this calculation yields exactly 100 degrees.

Question 9

Which of the following represents the most complex trophic level?

Accepted Answer

An ecosystem is the most complex level among the options because it includes all living organisms (communities) interacting with each other and their non-living physical environment.

Question 10

How many times the keys of a typewriter have to be pressed in order to write numbers from 121 to 1346?

Accepted Answer

From 121 to 999, there are 879 3-digit numbers, requiring 879 × 3 = 2637 keystrokes. From 1000 to 1346, there are 347 4-digit numbers, requiring 347 × 4 = 1388 keystrokes. Total = 4025.

Question 11

Who invented Space Pen?

Accepted Answer

Paul C. Fisher invented the Space Pen in 1965. It uses pressurized ink cartridges, allowing it to write in zero gravity, underwater, and at extreme temperatures, making it ideal for astronauts.

Question 12

Which of the following pairs is INCORRECT? I. Haematite : Iron II. Pitchblende : Copper III. Monazite : Thorium

Accepted Answer

Haematite is an ore of iron, and Monazite is an ore of thorium. However, Pitchblende is an ore of uranium, not copper. Thus, only pair II is incorrect.

Question 13

In the following question, select the odd word from the given alternatives.

Accepted Answer

"Beneath", "On top", and "Above" are words indicating position or location. "Huge" is an adjective describing size, making it the odd one out.

Question 14

In which of the following part of the cell does the pyruvic acid is broken down into carbon dioxide, water and energy?

Accepted Answer

During aerobic respiration, pyruvic acid enters the mitochondria where it is completely broken down into carbon dioxide, water, and ATP (energy) via the Krebs cycle.

Question 15

In which of the following case, law of demand fails?

Accepted Answer

The law of demand fails for Giffen goods. As their price increases, demand also increases because they are essential inferior goods with no close substitutes, violating the inverse price-demand relationship.

Question 16

Company 1 sold 20000 bikes each year from 2011 to 2016 and company 2 sold 10000 bikes each year from 2011 to 2016. What is the difference (in units) in average yearly production of company 1 and 2?

Accepted Answer

Calculate the average yearly production for both companies using the given data (from the associated graph/table). Subtracting Company 2's average from Company 1's yields 9333.33 units.

Question 17

In the English alphabet, which letter is 13th from right end?

Accepted Answer

The 13th letter from the right end is the same as the (27 - 13) = 14th letter from the left end. The 14th letter is N.

Question 18

If 2 T-shirts are offered free on purchase of 5 T-shirts, what is the effective discount (in %) on each T-shirt?

Accepted Answer

Here, the total number of T-shirts is considered as 5. The discount is given on the total items. Discount % = (Free items / Total items) × 100 = (2 / 5) × 100 = 40%.

Question 19

Of the 3 numbers whose average is 40, the first is 1/3 rd the sum of other 2. What is the first number?

Accepted Answer

The sum of the 3 numbers is 40 × 3 = 120. If the first is x, the sum of the others is 3x. So, 4x = 120, giving x = 30.

Question 20

In the following question, select the related word from the given alternatives. Banana : Fruit : : Ginger : ?

Accepted Answer

Just as a banana is classified as a fruit, ginger is botanically classified as an underground stem (rhizome).