SSC CGL Undated PYQs

Question 1

Fog, clouds, mist are examples of _______.

Accepted Answer

Fog, clouds, and mist are liquid aerosols. They consist of fine liquid droplets (dispersed phase) suspended in a gas like air (dispersion medium).

Question 2

What is the role of Pneumatophores? 07/09/2017 Staﬀ Selection Commision http://thepracticetest.in/cs_cglet1_17/response_questions.php?t_id=MTEwODIwMTc=&appid=1368062d74107fc05177712c90… 14/27

Accepted Answer

Pneumatophores are specialized aerial roots found in mangrove plants. They grow upward out of waterlogged mud to absorb oxygen directly from the air for respiration.

Question 3

Select the correct option: Convert binary 1101111 to decimal.

Accepted Answer

Multiply each bit by its corresponding power of 2: 64 + 32 + 0 + 8 + 4 + 2 + 1. Summing these values gives 111 in decimal.

Question 4

In the following question, select the related number from the given alternatives. 4 : 17 : : 7 : ? 4 : 17 : : 7 : ?

Accepted Answer

The pattern follows the rule x : x² + 1. Here, 4² + 1 = 17. Applying the same logic to 7, we get 7² + 1 = 49 + 1 = 50.

Question 5

Improve the bracketed part of the sentence. He has painted that picture so often that he can do it with his (eyes closed). 9/7/2017 Staff Selection Commision http://thepracticetest.in/cs_cglet1_17/response_questions.php?t_id=MTAwODIwMTc=&appid=1368062d74107fc05177712c90c3885c 25/27

Accepted Answer

The phrase 'with his eyes closed' is a correct idiom meaning to do something effortlessly due to extensive practice. No improvement is needed.

Question 6

What is the area (in sq cm) of a circle whose circumference is 22 cm?

Accepted Answer

Circumference = 2πr = 22, so r = 22 × (7/44) = 3.5 cm. Area = πr² = (22/7) × 3.5 × 3.5 = 38.5 sq cm.

Question 7

PQR is a right angled triangle in which ∠R = 90°. If RS ⊥ PQ, PR = 3 cm and RQ = 4 cm, then what is the value of RS (in cm)?

Accepted Answer

Calculate hypotenuse PQ = √(3² + 4²) = 5 cm. Using the area formula, PR × RQ = PQ × RS. So, 3 × 4 = 5 × RS, giving RS = 12/5 cm.

Question 8

Which of the following trees shed their leaves once in a year?

Accepted Answer

Deciduous trees shed their leaves annually, usually in autumn, to conserve water and energy during harsh weather conditions. Evergreen trees keep their leaves year-round.

Question 9

Who was the winner of 2015 Men's Cricket World Cup?

Accepted Answer

Australia won the 2015 Men's Cricket World Cup by defeating New Zealand in the final at the MCG. This victory marked their fifth Cricket World Cup title.

Question 10

Which of the following does not hold true for Animal belonging to Phylum Chordate?

Accepted Answer

Chordates have a ventral heart, not a dorsal one. Non-chordates typically have a dorsal heart. The other options (notochord, pharyngeal gill slits, post-anal tail) are defining characteristics of chordates.

Question 11

Which of the statements given below are correct? 1. The author of 'A Foreign Policy For India' is L.K Advani. 2. 'Wings of Fire' is a book written by A.P.J Abdul kalaam. 3. 'Open' is an Autobiography of   Andre Agassi.

Accepted Answer

Statement 1 is incorrect because 'A Foreign Policy For India' was authored by I.K. Gujral, not L.K. Advani. Statements 2 and 3 correctly match the books with their respective authors.

Question 12

Who is the author of the book titled 'Citizen and Society'?

Accepted Answer

'Citizen and Society' was written by the former Vice President of India, Mohammad Hamid Ansari. The book was released in 2016 by the then President Pranab Mukherjee.

Question 13

Who has won the 2016 Men's Single title at US Open?

Accepted Answer

Stan Wawrinka won the 2016 US Open Men's Singles title by defeating defending champion Novak Djokovic in four sets in the final.

Question 14

"Betting and gambling" is listed in the __________ list given in the Seventh Schedule in the Constitution of India.

Accepted Answer

Betting and gambling fall under the State List (Entry 34) of the Seventh Schedule. This gives state governments exclusive power to make laws regarding these activities.

Question 15

Sum of a fraction and thrice its reciprocal is 31/6. What is the fraction?

Accepted Answer

Let the fraction be x. The equation is x + 3/x = 31/6. Testing option 3: 9/2 + 3(2/9) = 9/2 + 2/3 = (27+4)/6 = 31/6.

Question 16

__________ is the number of individuals of the population who left the habitat and gone elsewhere during the time period under consideration.

Accepted Answer

Emigration refers to the outward movement of individuals leaving a population's habitat. Immigration is entering, natality is birth rate, and mortality is death rate.

Question 17

When [x + (1/x)] = 5, then what is the value of [x – (1/x)]? ?

Accepted Answer

Use the identity (x - 1/x)² = (x + 1/x)² - 4. Substituting 5 gives 25 - 4 = 21. Taking the square root yields ±√21.

Question 18

Select the related letters from the given alternatives. GIK : PRT :: DFH : ? GIK : PRT :: DFH : ?

Accepted Answer

Each letter in the first term is shifted forward by 9 positions (G+9=P, I+9=R, K+9=T). Applying the same to DFH (+9), we get MOQ.

Question 19

Mohit buys an old bicycle for Rs 2700 and spends Rs 500 on its repairs. If he sells the bicycle for Rs 3520, then what is his profit percentage? ?

Accepted Answer

Total cost price = 2700 + 500 = Rs 3200. Selling price = Rs 3520. Profit = 3520 - 3200 = Rs 320. Profit % = (320 / 3200) × 100 = 10%.

Question 20

Improve the bracketed part of the sentence. The people of Japan are (wiser than America.)

Accepted Answer

To compare 'people' (plural) in Japan with 'people' in America, we must use 'those of America' to refer to the people, ensuring a correct plural comparison.