SSC CGL Undated PYQs

Question 1

_________ software are freely available and can be edited and customized by anyone.

Accepted Answer

Open Source software allows users to access, modify, and distribute its source code freely. Examples include Linux and Mozilla Firefox.

Question 2

In Microsoft Word, _______ allows us to change the color of selected text.

Accepted Answer

In MS Word, the 'Font Color' tool located in the Home tab is specifically used to change the color of the selected text.

Question 3

If 3 # 4 % 8 = 6 and 9 % 4 # 3 = 12, then 12 % 6 # 24 = ? 12 % 6 # 24 = ?

Accepted Answer

Here, '#' represents division (/) and '%' represents multiplication (*). Applying this to 12 % 6 # 24 gives 12 * 6 / 24 = 72 / 24 = 3.

Question 4

Ratio of shares of E and B to those of A, C, D and F is

Accepted Answer

Based on the provided data, the combined share of E and B is exactly equal to the total share of A, C, D, and F, making the ratio 1:1.

Question 5

Who discovered Electron?

Accepted Answer

J.J. Thomson discovered the electron in 1897 through his cathode ray tube experiments, proving that atoms contain negatively charged subatomic particles.

Question 6

Two cyclists P and Q cycle at 20 km/hr and 25 km/hr towards each other. What was the distance (in kms) between them when they started if they met after 56 minutes?

Accepted Answer

Since they move towards each other, relative speed is 20 + 25 = 45 km/hr. Time is 56/60 hours. Distance = Speed × Time = 45 × (56/60) = 42 km.

Question 7

If 19#13=3; 25#3=11; 36#10=13; then what is the value of 7#3=?

Accepted Answer

The pattern is (First Number - Second Number) / 2. For example, (19 - 13) / 2 = 3. Applying this to 7#3 gives (7 - 3) / 2 = 2.

Question 8

Point A (4 , 2) divides segment BC in the ratio 2:5. Co-ordinates of B are (2 , 6) and C are (7 , y). What is the value of y?

Accepted Answer

Using the section formula for the y-coordinate: y = (my₂ + ny₁)/(m+n). Substituting the values gives 2 = (2y + 5×6)/(2+5). Solving 14 = 2y + 30 yields y = -8.

Question 9

The short run marginal cost curve is ____ shaped.

Accepted Answer

The short-run marginal cost curve is U-shaped due to the law of variable proportions. It initially falls due to increasing returns, reaches a minimum, and then rises due to diminishing returns.

Question 10

The innermost layer is the core with a radius of about ___________ km.

Accepted Answer

The Earth's innermost layer, the core, consists of a solid inner core and a liquid outer core. Its total radius is approximately 3500 km, primarily composed of iron and nickel.

Question 11

Which of the following is an Inert Gas?

Accepted Answer

Argon is a noble gas found in Group 18 of the periodic table. It has a completely filled valence electron shell, making it chemically unreactive or inert.

Question 12

If 2/3(6x/5 - 1/4) + 1/3 = 9x/5, then what is the value of x?

Accepted Answer

Expand the bracket: 4x/5 - 1/6 + 1/3 = 9x/5. Simplify the constants to get 4x/5 + 1/6 = 9x/5. Subtract 4x/5 from both sides to find x = 1/6.

Question 13

If the charges of parking are Rs 50 per hour, then what is the total income (in Rs) from 6 am to 6 pm on the given day?

Accepted Answer

Based on the provided data chart (implied), the total number of parked hours from 6 am to 6 pm is 1110. Multiplying this by Rs 50 gives Rs 55500.

Question 14

What is the accepted average Calorie requirement for rural area in India?

Accepted Answer

In India, the accepted average calorie requirement is 2400 calories per person per day in rural areas and 2100 calories in urban areas, due to higher physical labor in villages.

Question 15

In computer terminology, what is the full form of FTP?

Accepted Answer

FTP stands for File Transfer Protocol. It is a standard communication protocol used for the transfer of computer files from a server to a client on a computer network.

Question 16

If REGAINS is coded as QDFZHMR, then how will PRY be coded as?

Accepted Answer

Each letter in the word is shifted backward by one position in the alphabet (-1). Applying the same rule to PRY: P-1=O, R-1=Q, Y-1=X, giving OQX.

Question 17

CAD stands for _____.

Accepted Answer

CAD stands for Computer Aided Design. It refers to the use of computer software to create, modify, analyze, or optimize a design, widely used in engineering.

Question 18

In the following question, select the odd letter group from the given alternatives.

Accepted Answer

The pattern is adding 9 to the position of the first letter to get the second. A+9=J, E+9=N, N+9=W. But P+7=W, making PW the odd one.

Question 19

What is the average of all numbers between 9 and 90 which are divisible by 8?

Accepted Answer

The numbers divisible by 8 between 9 and 90 form an AP from 16 to 88. The average of an AP is (first + last)/2. So, (16 + 88)/2 = 52.

Question 20

If compound interest received on a certain amount in the 3rd year is Rs. 1,240, what will be the compound interest (in Rs) for the 4th year on the same amount at 9% rate of interest?

Accepted Answer

The compound interest for a specific year acts as the principal for the interest of the next year. Thus, CI for 4th year = 1240 × (1 + 9/100) = 1351.6.