SSC CGL Undated PYQs

Question 1

Who among the following devised the technique IVF (In vitro Fertilization)?

Accepted Answer

Robert Edwards, a British physiologist, pioneered the IVF technique alongside Patrick Steptoe. This breakthrough in reproductive medicine led to the birth of the first test-tube baby in 1978.

Question 2

Which among the following is not an example of emulsion?

Accepted Answer

An emulsion is a colloid of two or more immiscible liquids. Curd is a gel (liquid dispersed in a solid), not an emulsion like milk, butter, or whipped cream.

Question 3

Which film won the award for Best Film at the 61st Filmfare Award held in 2016?

Accepted Answer

Sanjay Leela Bhansali's 'Bajirao Mastani' won the Best Film award at the 61st Filmfare Awards in 2016. It dominated the ceremony, winning several other major categories including Best Director.

Question 4

If a - b = -1 and ab = 6, then what is the value of a3 - b3?

Accepted Answer

Use the identity a³ - b³ = (a - b)³ + 3ab(a - b). Substituting the given values, we get (-1)³ + 3(6)(-1) = -1 - 18 = -19.

Question 5

If 35 % 31 = 12, 92 % 30 = 14 then what is the value of 15 % 24 = ?

Accepted Answer

The logic is to add the individual digits of both numbers. For 15 % 24: (1+5) + (2+4) = 6 + 6 = 12.

Question 6

By what amount (in Rs crore) the total revenue by selling all the four products in 2016 is greater than that of 2015 ?

Accepted Answer

Calculate the total revenue for all four products in 2016 and subtract the total revenue of 2015 from it. The resulting difference is exactly 1.25 crore.

Question 7

Who among the following is the executive head of state in India? ?

Accepted Answer

Article 53 of the Constitution states that the executive power of the Union is vested in the President. Thus, the President is the executive head of the Indian state.

Question 8

"Forests" is listed in the __________ list given in the Seventh Schedule in the Constitution of India.

Accepted Answer

Originally in the State List, "Forests" was moved to the Concurrent List by the 42nd Amendment Act, 1976, allowing both central and state governments to legislate on it.

Question 9

Which amongst the following is not in the list of Maharatna?

Accepted Answer

At the time this question was asked, Hindustan Petroleum Corporation Limited (HPCL) was a Navratna, not a Maharatna. It was later granted Maharatna status in 2019.

Question 10

The weights of 4 boxes are 80, 60, 90 and 70 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes?

Accepted Answer

The sum of all four boxes is 300 kg. The combinations of three boxes give 210, 220, 230, and 240 kg. Thus, 290 kg cannot be formed.

Question 11

If D and E are points on the sides AB and AC respectively of a triangle ABC such that DE||BC. If AD = x cm, DB = (x – 3) cm, AE = (x + 3) cm and EC = (x – 2) cm, then what is the value (in cm) of x?

Accepted Answer

By the Basic Proportionality Theorem, AD/DB = AE/EC. Substituting the values gives x/(x-3) = (x+3)/(x-2). Cross-multiplying yields x^2 - 2x = x^2 - 9, which simplifies to 2x = 9, so x = 4.5.

Question 12

How many diagonals are there in octagon?

Accepted Answer

The number of diagonals in an n-sided polygon is calculated using the formula n(n-3)/2. For an octagon, n=8. Therefore, 8(8-3)/2 = (8 × 5)/2 = 20 diagonals.

Question 13

Select the related number from the given alternatives. 99 : 101 :: 100 : ?

Accepted Answer

The pattern involves adding 2 to the first number to get the second number. Since 99 + 2 = 101, similarly, 100 + 2 = 102.

Question 14

If a + b = 4 and ab = -5, then what is the value of a3 + b3?

Accepted Answer

Use the formula a³ + b³ = (a + b)³ - 3ab(a + b). Substitute the values: (4)³ - 3(-5)(4) = 64 + 60 = 124.

Question 15

What is the sum of the ﬁrst 9 terms of an arithmetic progression if the ﬁrst term is 7 and last term is 55?

Accepted Answer

Use the AP sum formula: S = n/2 × (first term + last term). Here, S = 9/2 × (7 + 55) = 9/2 × 62 = 9 × 31 = 279.

Question 16

If SQUALOR is coded as USWCNQT, then how will WHY be coded as?

Accepted Answer

Each letter in the word is shifted forward by 2 positions in the alphabetical order. Applying +2 to W, H, and Y gives Y, J, and A respectively.

Question 17

Strait of Malacca separates which two land masses? ?

Accepted Answer

The Strait of Malacca is a narrow stretch of water located between the Malay Peninsula and the Indonesian island of Sumatra, connecting the Indian and Pacific Oceans.

Question 18

In a certain code language, "BAD" is written as "7" and "SAP" is written as "9". How is "BAN" written in that code language?

Accepted Answer

Add the alphabetical positions of the letters and reduce the sum to a single digit. For BAN: 2 + 1 + 14 = 17, then 1 + 7 = 8.

Question 19

Kelvin (K) is the unit of measurement of ________.

Accepted Answer

Kelvin (K) is the SI base unit of temperature. Density is measured in kg/m³, pressure in Pascals, and mass in kilograms.

Question 20

Which of the following country is not a member of SAARC?

Accepted Answer

SAARC has 8 member states: Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, and Sri Lanka. China is merely an observer state, not a full member.