SSC CGL Undated PYQs

Question 1

The later (second) formed primary xylem elements are called _____________.

Accepted Answer

Primary xylem consists of protoxylem and metaxylem. The first formed elements are called protoxylem, while the later formed primary xylem elements are known as metaxylem.

Question 2

A shopkeeper sells a table at a discount of 20% and earns a profit of 60%. If he sells the same table at 40% discount, then what will be his new profit percent?

Accepted Answer

Let CP = 100. With 60% profit, SP = 160. Since discount is 20%, MP = 160 / 0.8 = 200. At 40% discount, new SP = 120. Profit = 20%.

Question 3

Convex mirror is generally used in _____.

Accepted Answer

Convex mirrors diverge light and provide a wider field of view, making them ideal for rear-view mirrors in vehicles to safely monitor traffic behind.

Question 4

If Sin θ = 20/29 , then what is the value of Sec Sin θ ?

Accepted Answer

Given Sin θ = Perpendicular/Hypotenuse = 20/29. Base = √(29² - 20²) = √441 = 21. Therefore, Sec θ = Hypotenuse/Base = 29/21.

Question 5

If the radius of the cylinder is increased by 25%, then by how much percent the height must be reduced, so that the volume of the cylinder remains same?

Accepted Answer

Volume is proportional to r²h. A 25% increase in radius makes r² become 25/16. To keep volume constant, height must become 16/25, which is a reduction of 9/25 or 36%.

Question 6

50% of others who have filled the form are B. Arch. and 45% of others who were present in the exam are B. Arch. How many B. Arch. candidates did not gave the exam?

Accepted Answer

Calculate the total B.Arch candidates who filled the form using the 50% data, then subtract the 45% of present B.Arch candidates to find those who missed the exam.

Question 7

What is the slope of the line perpendicular to the line passing through the points (3 , -2) and (4 , 2)?

Accepted Answer

The slope of the line through (3, -2) and (4, 2) is (2 - (-2))/(4 - 3) = 4. The perpendicular line's slope is the negative reciprocal, -1/4.

Question 8

The average of 5 members of a family is 24 years. If the youngest member is 8 years old, then what was the average age (in years) of the family at the time of the birth of the youngest member?

Accepted Answer

Current total age = 5 × 24 = 120. Total age 8 years ago = 120 - (5 × 8) = 80. Average of the 4 members then = 80 / 4 = 20 years.

Question 9

In the following question, select the missing number from the given series. 19, 11, 13, 16, 15, 17, 13, 19, 21, ? 19, 11, 13, 16, 15, 17, 13, 19, 21, ?

Accepted Answer

The sequence consists of three interleaved series. The first series (1st, 4th, 7th terms) is 19, 16, 13, decreasing by 3. The next term is 13 - 3 = 10.

Question 10

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement". I would love to come to your party! Thank you for (invites) me.

Accepted Answer

The preposition 'for' must be followed by a gerund (verb + -ing) when it acts as the object of the preposition. Thus, 'inviting' is the correct form.

Question 11

Improve the bracketed part of the sentence. He jumped off the train while it (had been running).

Accepted Answer

The action of jumping happened while the train was in continuous motion. Past continuous tense ('was running') correctly describes an ongoing action in the past.

Question 12

Doldrums pressure belts lies in between which of the following latitudes? 9/8/2017 Staff Selection Commision http://thepracticetest.in/cs_cglet1_17/response_questions.php?t_id=MTIwODIwMTc=&appid=1368062d74107fc05177712c90c3885c# 15/32

Accepted Answer

The Doldrums, or equatorial low-pressure belt, lies between 5° North and 5° South latitudes. It is characterized by calm, light winds due to intense heating at the equator.

Question 13

Who among the following devised the technique IVF (In vitro Fertilization)? 9/8/2017 Staff Selection Commision

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 14

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 15

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 16

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 17

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 18

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 19

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 20

"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.