SSC CGL Undated PYQs

Question 1

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 2

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 3

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 4

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 5

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 6

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 7

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 8

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 9

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).

Question 10

What is the average of all numbers between 8 and 74 which are divisible by 7?

Accepted Answer

The numbers divisible by 7 between 8 and 74 form an arithmetic progression from 14 to 70. The average is (first term + last term) / 2 = (14 + 70) / 2 = 42.

Question 11

In the following question, select the missing number from the given series. 19, 26, 45, 71, 116, ?

Accepted Answer

The series follows a Fibonacci-like pattern where each term is the sum of the previous two terms. 19+26=45, 26+45=71, 45+71=116. Thus, the next term is 71+116=187.

Question 12

Which country is headed towards a confrontation over Gibraltar with Spain?

Accepted Answer

Gibraltar is a British Overseas Territory located at the southern tip of the Iberian Peninsula. Spain claims sovereignty over it, leading to ongoing diplomatic tensions and confrontations with the United Kingdom.

Question 13

A can do a work in 8 days, B can do the same work in 10 days and C can do the same work in 12 days. If all three of them do the same work together and they are paid Rs 7400, then what is the share (in Rs) of B?

Accepted Answer

Efficiencies are inversely proportional to time. Ratio of efficiencies = 1/8 : 1/10 : 1/12 = 15:12:10. Total parts = 37. B's share = (12/37) × 7400 = Rs 2400.

Question 14

Which of the following Country doesn't have a written Constitution?

Accepted Answer

The United Kingdom does not have a single, codified written constitution. Instead, its constitution is unwritten, formed by acts of Parliament, court judgments, and conventions over centuries.

Question 15

If (x – 2) and (x + 3) are the factors of the equation x2 + k1x + k2 = 0, then what are the values of k1 and k2?

Accepted Answer

Expand the factors: (x - 2)(x + 3) = x^2 + x - 6. Comparing this with x^2 + k1x + k2 = 0, we get k1 = 1 and k2 = -6.

Question 16

Which of the following is the largest gland in human body? ?

Accepted Answer

The liver is the largest gland and the largest internal organ in the human body. It secretes bile and performs numerous vital metabolic functions.

Question 17

Arrange the given words in the sequence in which they occur in the dictionary. 1. Flinching 2. Flintlock 3. Flinpites 4. Flintlocks 5. Flinchers 1. Flinching 2. Flintlock 3. Flinpites 4. Flintlocks 5. Flinchers

Accepted Answer

Compare letter by letter. 'Flinch' is common in 1 and 5; 'e' comes before 'i', so 5 then 1. Next is 'p' (3). Finally, 'Flintlock' (2) precedes 'Flintlocks' (4). Order: 5, 1, 3, 2, 4.

Question 18

The market structure called monopoly exists where there is exactly ______ seller in any market.

Accepted Answer

A monopoly is a market structure characterized by a single seller dominating the entire market, offering a unique product with no close substitutes.

Question 19

What is the simplified value of cosec6 A – cot6 A – 3 cosec2 A cot2 A?

Accepted Answer

Use the algebraic identity (a - b)³ = a³ - b³ - 3ab(a - b). Let a = cosec² A and b = cot² A. Since cosec² A - cot² A = 1, the expression simplifies to 1³ = 1.

Question 20

A farmer buys a goat and a sheep for Rs 3500. He sold the sheep at a profit of 20 percent and the goat at a loss of 10 percent. If he sold both the animals at the same price, then the cost price (in Rs) of the cheaper animal was?

Accepted Answer

Let CP of sheep be S and goat be G. S + G = 3500. Selling prices are equal: 1.2S = 0.9G, so S/G = 3/4. The cheaper animal costs (3/7) × 3500 = Rs 1500.