SSC CGL Undated PYQs

Question 1

Bryophytes are also called ____________ of the plant kingdom.

Accepted Answer

Bryophytes are called amphibians of the plant kingdom because they live in soil but strictly require water for sexual reproduction, similar to animal amphibians.

Question 2

To travel 720 km, a Express train takes 6 hours more than Duronto. If however, the speed of the Express train is doubled, it takes 2 hours less than Duronto. The speed of Duronto (in km/hr) is?

Accepted Answer

Let Express time be T. T - Duronto time = 6. Doubling speed halves time: Duronto time - T/2 = 2. Solving gives T = 16 hrs. Duronto time = 10 hrs. Speed = 720/10 = 72 km/hr.

Question 3

If tan θ + cot θ = x, then what is the value of tan4 θ + cot4 θ?

Accepted Answer

Square tan θ + cot θ = x to get tan² θ + cot² θ = x² - 2. Square again: tan⁴ θ + cot⁴ θ = (x² - 2)² - 2 = x⁴ - 4x² + 2.

Question 4

Who created the first mechanical computer, which proved to be the prototype for future computers?

Accepted Answer

Charles Babbage designed the Analytical Engine in the 1830s, the first general-purpose mechanical computer. This pioneering work earned him the title 'Father of the Computer.'

Question 5

A] The author of the novel 'The Grapes of Wrath' is Ayn Rand. B] The author of the novel 'The Fountainhead' is John Steinbeck. C] The author of the novel 'Ancillary Justice' is Ann Leckie. Which of the statements given above are not correct?

Accepted Answer

'The Grapes of Wrath' was written by John Steinbeck, and 'The Fountainhead' by Ayn Rand. Thus, statements A and B are incorrect. Statement C is correct.

Question 6

What is the full form of JPEG?

Accepted Answer

JPEG stands for Joint Photographic Experts Group. It is a widely used standard image format for compressing photographic images to reduce file size while maintaining acceptable quality.

Question 7

Punit said to a lady, "The sister of your father's wife is my aunt". How is the lady related to Punit?

Accepted Answer

The lady's father's wife is her mother. Her mother's sister is her aunt. Since this same woman is also Punit's aunt, Punit and the lady are cousins. Thus, she is his cousin sister.

Question 8

What is the simplified value of [(tan2 θ – sin2 θ)/tan2 θ sin2 θ]?

Accepted Answer

Convert tan2 θ to sin2 θ/cos2 θ in the numerator. It becomes sin2 θ(1/cos2 θ - 1) = sin2 θ tan2 θ. Dividing by the denominator gives 1.

Question 9

The sum of a non-zero number and 4 times its reciprocal is 17/2. What is the number?

Accepted Answer

Let the number be x. The equation is x + 4/x = 17/2. Checking the options, if x = 8, then 8 + 4/8 = 8 + 1/2 = 17/2. So, 8 is correct.

Question 10

Improve the bracketed part of the sentence. Neha was (surprised by) her result.

Accepted Answer

The correct preposition to use after 'surprised' when referring to a result or event is 'at'. So, 'surprised at' is the appropriate phrase.

Question 11

Rs 3200 is divided among A, B and C in the ratio of 3 : 5 : 8 respectively. What is the difference (in Rs) between the share of B and C?

Accepted Answer

Total ratio parts = 3+5+8 = 16, which equals Rs 3200. So, 1 part = Rs 200. The difference between B and C's share is (8-5) = 3 parts, which is 3 × 200 = Rs 600.

Question 12

Who was the son of Chandragupta Maurya?

Accepted Answer

Bindusara was the son of the Mauryan Empire's founder, Chandragupta Maurya, and the father of its most famous ruler, Ashoka. He ruled from around 297 BC to 273 BC.

Question 13

If 5/2 - (6/5)(x - 15/2) = -x/5, then what is the value of x?

Accepted Answer

Expand the bracket: 5/2 - 6x/5 + 9 = -x/5. Combine constants: 23/2 = 6x/5 - x/5. This simplifies to x = 23/2.

Question 14

Karan remembers that his sister's birthday is not after 18th August. Karan's mother remembers that Karan's sister birthday is before 20th August but after 17th August. On which date of August is Karan's sister birthday? ?

Accepted Answer

Karan says the date is 18th or earlier. His mother says it is 18th or 19th. The only common date satisfying both conditions is 18th August.

Question 15

What is the sum of all prime numbers between 60 and 80?

Accepted Answer

The prime numbers between 60 and 80 are 61, 67, 71, 73, and 79. Adding them together: 61 + 67 + 71 + 73 + 79 = 351.

Question 16

What is the percentage increase in number of mobile sold by Brand 2 from 2014 to 2015?

Accepted Answer

Using the provided data, find the difference in Brand 2's sales between 2015 and 2014. Divide this difference by the 2014 base value and multiply by 100 to get 11.11%.

Question 17

Which among the following has segmented body?

Accepted Answer

Phylum Annelida (like earthworms) features true metameric segmentation, where the body is divided into distinct segments both externally and internally.

Question 18

Who is the author of the book titled 'Numbers Do Lie'? ?

Accepted Answer

'Numbers Do Lie' is a cricket-centric book written by former Indian cricketer and commentator Aakash Chopra. It analyzes cricket statistics and their real impact on the game.

Question 19

In a certain code language, "SPICEY" is written as "ELOUAY" and "PONDER" is written as "JKLNAZ". How is "HOUSED" written in that code language?

Accepted Answer

By analyzing the position of letters in the given words and their codes, a specific complex shifting pattern is applied to each letter to get the correct code QKDZAO.

Question 20

A can do 75% of a job in 9 days and B can do half of the job in 8 days. If they work on it together, then in how many days can they do half of the job?

Accepted Answer

A completes the full job in 12 days (9×4/3) and B in 16 days (8×2). Total work = LCM(12,16) = 48 units. Combined efficiency = 7. Time for half work (24 units) = 24/7 days.