SSC CGL Undated PYQs

Question 1

Who discovered Uranus?

Accepted Answer

William Herschel discovered Uranus on March 13, 1781, using a telescope of his own design. It was the first planet discovered with the aid of a telescope.

Question 2

The amount received at 10% per annum Compound interest after 3 yrs is Rs 5324. What was the principal (in Rs)?

Accepted Answer

Using the formula A = P(1 + R/100)^n, we get 5324 = P(1 + 10/100)^3. This simplifies to 5324 = P(1331/1000). Solving for P gives 4000.

Question 3

Which among the following is national water animal of India?

Accepted Answer

The Gangetic Dolphin was declared the National Aquatic Animal of India in 2009. It is a highly endangered species found mainly in the Ganges and Brahmaputra river systems.

Question 4

If A = 30°, B = 60° and C = 135°, then what is the value of sin3A + cos3B + tan3C – 3sin A cos B tan C?

Accepted Answer

Let a = sin 30° = 1/2, b = cos 60° = 1/2, and c = tan 135° = -1. Since a + b + c = 0, the expression a³ + b³ + c³ - 3abc equals 0.

Question 5

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series. 4, 5.2, 6.4, ?, 8.8 4, 5.2, 6.4, ?, 8.8

Accepted Answer

The series follows a constant addition pattern. Each number increases by 1.2. Adding 1.2 to 6.4 gives 7.6, which perfectly leads to the final number 8.8.

Question 6

If a + b + c = 27, then what is the value of (a – 7)3 + (b – 9)3 + (c – 11)3 – 3(a – 7)(b – 9)(c – 11)?

Accepted Answer

Let x = a-7, y = b-9, and z = c-11. Their sum is a+b+c - 27 = 27 - 27 = 0. Since x+y+z = 0, the expression x³+y³+z³ - 3xyz equals 0.

Question 7

The average of 17 results is 60. If the average of ﬁrst 9 results is 57 and that of the last 9 results is 65, then what will be the value of 9th result?

Accepted Answer

Total sum = 17 × 60 = 1020. Sum of first 9 = 9 × 57 = 513. Sum of last 9 = 9 × 65 = 585. 9th result = (513 + 585) - 1020 = 78.

Question 8

If the square of sum of three positive consecutive natural numbers exceeds the sum of their squares by 292, then what is the largest of the three numbers?

Accepted Answer

Let the numbers be x-1, x, and x+1. Their sum is 3x. Equation: (3x)^2 - ((x-1)^2 + x^2 + (x+1)^2) = 292. Solving 9x^2 - (3x^2 + 2) = 292 gives x=7. The largest is 8.

Question 9

Nepal shares a border with which other country besides India?

Accepted Answer

Nepal is a landlocked country situated between India to the south, east, and west, and China (specifically the Tibet Autonomous Region) to the north.

Question 10

If a + b = 4 and ab = -21, then what is the value of a3 + b3?

Accepted Answer

Use the algebraic identity a³ + b³ = (a + b)³ - 3ab(a + b). Substitute the given values: 4³ - 3(-21)(4) = 64 + 252 = 316.

Question 11

Gravitational force is maximum at which of the following place?

Accepted Answer

The Earth is an oblate spheroid, flattened at the poles. Since the poles are closer to the Earth's center, the gravitational force is maximum there.

Question 12

Which component in tobacco makes it harmful for human consumption?

Accepted Answer

Tobacco contains nicotine, a highly addictive alkaloid that stimulates the nervous system, increases heart rate, and makes tobacco consumption harmful and habit-forming for humans.

Question 13

In the following question, select the missing number from the given series. 2, 4, 13, 41, 106, ?

Accepted Answer

The differences between consecutive terms follow the pattern 1³+1, 2³+1, 3³+1, 4³+1. The next difference is 5³+1 = 126. Adding 126 to 106 gives 232.

Question 14

The book "Azad Bachpan ki Aur" is written by which author?

Accepted Answer

"Azad Bachpan ki Aur" was written by Nobel Peace Prize laureate Kailash Satyarthi. The book highlights his lifelong struggle against child labor and advocates for children's rights.

Question 15

Who among the following is the 2017 Asian Award recipient for the outstanding achievement in Cinema? ?

Accepted Answer

Kunal Nayyar, best known for his role in 'The Big Bang Theory', received the Outstanding Achievement in Television/Cinema award at the 7th Asian Awards in 2017.

Question 16

Who was the 2015 Men's Rugby World Cup Winner?

Accepted Answer

New Zealand won the 2015 Men's Rugby World Cup by defeating Australia 34-17 in the final, becoming the first team to win back-to-back titles.

Question 17

Who was the first Viceroy of India?

Accepted Answer

Lord Canning became the first Viceroy of India after the Government of India Act 1858, which transferred power from the East India Company to the British Crown following the 1857 revolt.

Question 18

What least number must be added to 4131, so that the sum is completely divisible by 19?

Accepted Answer

Divide 4131 by 19 to get a remainder of 8. To make it exactly divisible, add the difference between the divisor and remainder: 19 - 8 = 11.

Question 19

Gol Gumbaz is located in?

Accepted Answer

Gol Gumbaz is the mausoleum of Mohammed Adil Shah, located in Bijapur, Karnataka. It is famous for its massive dome and acoustic whispering gallery.

Question 20

"United Nations Organization" is listed in the __________ list given in the Seventh Schedule in the Constitution of India.

Accepted Answer

The "United Nations Organization" falls under the Union List (Entry 12) of the Seventh Schedule, meaning only the Parliament has the exclusive power to legislate on matters related to it.