SSC CGL Undated PYQs

Question 1

If "x" denotes "added to", "÷" denotes "subtracted from", "+" denotes "divided by" and "–" denotes "multiplied by", then 14 x 12 – 16 ÷ 18 = ?

Accepted Answer

Substitute the signs to get 14 + 12 * 16 - 18. Using BODMAS, first multiply (12 * 16 = 192), then add 14 (206), and finally subtract 18 to get 188.

Question 2

Which of the following is an Indian military decoration awarded for valour, courageous action or self-sacrifice away from the battlefield?

Accepted Answer

The Ashok Chakra is India's highest peacetime military decoration awarded for valour, courageous action, or self-sacrifice away from the battlefield. The other options are civilian, sports, or film awards.

Question 3

∆ABC is right angled at B. BD is an altitude. AD = 4 cm and DC = 9 cm. What is the value of BD (in cm)?

Accepted Answer

In a right-angled triangle, the square of the altitude to the hypotenuse equals the product of the hypotenuse segments. BD² = AD × DC = 4 × 9 = 36. Thus, BD = 6 cm.

Question 4

Which Fundamental Right in the Indian Constitution includes equal access to shops, bathing, ghats, hotels etc?

Accepted Answer

Article 15(2) under the Right to Equality prohibits discrimination on grounds of religion, race, caste, sex, or place of birth regarding access to shops, hotels, and public bathing ghats.

Question 5

What is the sum of the first 11 terms of an arithmetic progression if the first term is -31 and last term is 29?

Accepted Answer

Use the sum formula for an AP: S = n/2 × (a + l). Here, S = 11/2 × (-31 + 29) = 11/2 × (-2) = -11.

Question 6

Which colour is formed when Blue and Green are mixed?

Accepted Answer

In the RGB color model, mixing the primary colors blue and green produces the secondary color cyan. This is a fundamental principle of additive color mixing used in screens.

Question 7

The 7th and 12th term of an arithmetic progression are -15 and 5 respectively. What is the 16th term?

Accepted Answer

Using a+6d = -15 and a+11d = 5, we get 5d = 20, so d = 4. Then a = -39. The 16th term is a+15d = -39 + 60 = 21.

Question 8

Kyoto Protocol's (an international treaty to reduce greenhouse gas emissions) first meeting was held at which country?

Accepted Answer

The Kyoto Protocol was adopted in Kyoto, Japan, on December 11, 1997. Therefore, its first major meeting and adoption took place in Japan to combat global warming.

Question 9

How many players are there in a water polo team?

Accepted Answer

A standard water polo team consists of 7 players in the water at any one time: six field players and one goalkeeper.

Question 10

Land covers about ______ of the earth's surface.

Accepted Answer

Earth's surface is covered by approximately 71% water and 29% land. Therefore, 30% is the closest and most accurate approximation among the given options.

Question 11

If 9@7=4; 6@1=10; 7@4=6; then what is the value of 8@2=?

Accepted Answer

The pattern is (First number - Second number) × 2. So, (9-7)×2 = 4 and (6-1)×2 = 10. Applying this, (8-2)×2 = 12.

Question 12

The production of company 1 in year 2014 is 18000 and sales of company 2 in year 2012 is 15000. What is the ratio of difference in sales and production of company 1 in year 2014 and company 2 in year 2012?

Accepted Answer

Extract the sales and production values for both companies from the given data. Calculate the difference for Company 1 in 2014 and Company 2 in 2012, then find their ratio to get 8:15.

Question 13

A sum amounts to Rs 7727.104 at the rate of 12% per annum compounded annually after three years. What is the value of principal (in Rs)? ?

Accepted Answer

Use the formula A = P(1 + R/100)^n. Here, 7727.104 = P(1.12)^3. Since 1.12^3 = 1.404928, dividing 7727.104 by 1.404928 gives the principal P = 5500.

Question 14

What is the full form of RNA?

Accepted Answer

RNA stands for Ribonucleic Acid. It is a vital molecule present in all living cells, primarily responsible for carrying instructions from DNA to control the synthesis of proteins.

Question 15

What is the area (in sq cm) of a rhombus if the lengths of its diagonals are 25 cm and 20 cm?

Accepted Answer

The area of a rhombus is half the product of its diagonals. Area = (1/2) × d1 × d2 = (1/2) × 25 × 20 = 250 sq cm.

Question 16

Improve the bracketed part of the sentence. When I first saw Ankit, he (was playing) cricket.

Accepted Answer

The past continuous tense 'was playing' correctly describes an ongoing action in the past when another action (seeing Ankit) occurred. No improvement is needed.

Question 17

What is the area (in sq cm) of a rectangle if its diagonal is 26 cm and one of its sides is 10 cm?

Accepted Answer

Using Pythagoras theorem, the other side is √(26² - 10²) = √576 = 24 cm. The area of the rectangle is length × width = 10 × 24 = 240 sq cm.

Question 18

Even if memory of model D was halved it would be greater (in %) than that of model B by?

Accepted Answer

Assuming Model B's memory is 1 unit, the halved Model D memory is 4 units. The difference is 3 units. Percentage greater = (3/1) × 100 = 300%.

Question 19

A man starts running from point P at 11:00 a.m. with a speed of 10 km/hr. He runs for 2 hours and then takes a 1 hour rest. He continues this till he is caught by another man who starts at 2:00 p.m. from point P and runs non-stop at a speed of 15 km/hr towards the first man. At what time (in p.m.) will the first man be caught?

Accepted Answer

By 4:00 p.m., the first man covers 40 km and starts resting. The second man covers 30 km. The second man covers the remaining 10 km in 40 minutes, catching him at 4:40 p.m.

Question 20

If I walk at 7/6 of my usual speed, then I reach my ofﬁce 15 minutes early. What is the usual time taken (in minutes) by me to reach the ofﬁce?

Accepted Answer

Speed and time are inversely proportional. The speed ratio is 7:6, so the time ratio is 6:7. The difference of 1 unit equals 15 minutes. Usual time (7 units) is 7 × 15 = 105 minutes.