SSC CGL Undated PYQs

Question 1

In a market system, the central problems regarding how much and what to produce are solved through the coordination of economic activities brought about by ________ signals.

Accepted Answer

In a free market, price signals act as a coordinating mechanism. They convey information about consumer demand and producer supply, guiding decisions on what and how much to produce.

Question 2

"Reserve Bank of India" is listed in the __________ list given in the Seventh Schedule in the Constitution of India.

Accepted Answer

The Reserve Bank of India manages the nation's currency and banking system. Therefore, it falls under the Union List (Entry 38) of the Seventh Schedule, giving the central government exclusive legislative power.

Question 3

If the cost price of 48 articles is equal to the selling price of 32 articles, then what is the proﬁt percentage?

Accepted Answer

Given 48 CP = 32 SP, so CP/SP = 32/48 = 2/3. This means on a cost of 2, the profit is 1. Profit % = (1/2) × 100 = 50%.

Question 4

If 4 * 7 * 2 = 361 and 5 * 9 * 1 = 480, then 2 * 1 * 3 = ?

Accepted Answer

Subtract 1 from each digit and write them together. For 4*7*2, (4-1)(7-1)(2-1) = 361. Similarly, for 2*1*3, it becomes (2-1)(1-1)(3-1) = 102.

Question 5

Who is the winner of 2017 Formula One Chinese Grand Prix?

Accepted Answer

Lewis Hamilton won the 2017 Formula One Chinese Grand Prix driving for Mercedes, securing his fifth victory at this specific circuit.

Question 6

What is the full form of 'LAN'?

Accepted Answer

LAN stands for Local Area Network. It is a computer network that interconnects computers within a limited geographical area such as a home, school, or office building.

Question 7

The ratio of speed of three racers is 3 : 4 : 6. What is the ratio of time taken by the three racers to cover the same distance?

Accepted Answer

Time is inversely proportional to speed for a constant distance. The time ratio is 1/3 : 1/4 : 1/6. Multiplying by the LCM (12) gives 4 : 3 : 2.

Question 8

If x = 5 – 2√6, then what is the value of √x +(1/√x)? ?

Accepted Answer

First, find 1/x = 5 + 2√6. Then x + 1/x = 10. Square the required expression: (√x + 1/√x)² = x + 1/x + 2 = 12. Thus, the value is √12 = 2√3.

Question 9

Who started construction of Nalanda (Mahavihara) ?

Accepted Answer

Nalanda Mahavihara was founded by the Gupta emperor Kumaragupta I in the 5th century CE. It flourished as a major center of Buddhist learning.

Question 10

What is the SI unit of Power?

Accepted Answer

The SI unit of power is the Watt (W), which is equal to one joule per second. It measures the rate of energy transfer or work done.

Question 11

How many members of upper house (Rajya Sabha) can be nominated by President of India?

Accepted Answer

Under Article 80 of the Constitution, the President of India can nominate 12 members to the Rajya Sabha who have special knowledge or practical experience in art, literature, science, or social service.

Question 12

In the following question, select the odd word from the given alternatives. REGISTRATION NUMBER : EXAM DATE : 16-August-2017 EXAM NAME : SSC Examination TOTAL MARKS : 200 CANDIDATE NAME : EXAM START TIME : 16:15:00 SSC CGL 2017 TIER 1 AUGUST 16, 2017 SHIFT 3 QUESTION PAPER

Accepted Answer

Singer, Director, and Actor are professions or people working in the entertainment industry. Music is an art form or product, making it the odd one out.

Question 13

The difference between the number of shoes of Reebok and Nike is same as the difference between which of the following two brands?

Accepted Answer

Calculate the difference in the number of shoes for Reebok and Nike from the given data. Then, check the options to find the pair (Vans and Nike) that has the exact same numerical difference.

Question 14

The flight fare between two cities is increased in the ratio 11:13. What is the increase (in Rs) in the fare, if the original fare was Rs 12100?

Accepted Answer

The original fare corresponds to 11 parts, so 1 part = 12100 / 11 = 1100. The increase is (13 - 11) = 2 parts. Thus, the increase is 2 × 1100 = Rs 2200.

Question 15

If x + [1/(x + 7)] = 0, then what is the value of x – [1/(x + 7)]?

Accepted Answer

Let y = x + 7. The equation becomes y + 1/y = 7. We need (y - 1/y) - 7. Since y - 1/y = √(7² - 4) = 3√5, the answer is 3√5 - 7.

Question 16

In triangle PQR, the sides PQ and PR are produced to A and B respectively. The bisectors of ∠AQR and ∠BRQ intersect at point O. If ∠QOR = 50°, then what is the value (in degrees) of ∠QPR?

Accepted Answer

For exterior angle bisectors meeting at O, the formula is ∠QOR = 90° - (∠QPR / 2). Substituting 50° gives 50° = 90° - ∠QPR/2, which means ∠QPR = 80°.

Question 17

Circum-centre of ∆ABC is O. If ∠BAC = 75° and ∠BCA = 80°, then what is the value (in degrees) of ∠OAC?

Accepted Answer

∠ABC = 180° - (75° + 80°) = 25°. The angle at the circumcentre ∠AOC = 2 × ∠ABC = 50°. In isosceles ∆AOC, ∠OAC = (180° - 50°) / 2 = 65°.

Question 18

If A = 2B = 4C; what is the value of A : B : C?

Accepted Answer

Let A = 2B = 4C = k. Then A = k, B = k/2, and C = k/4. The ratio A : B : C is k : k/2 : k/4. Multiplying by 4 gives 4 : 2 : 1.

Question 19

Asif is twice as good as workman as Bashir and together they finish a piece of work in 30 days. In how many days will Asif alone finish the work?

Accepted Answer

Asif's efficiency is 2, Bashir's is 1. Total efficiency = 3. Total work = 30 days × 3 = 90 units. Asif alone takes 90 / 2 = 45 days.

Question 20

In the following question, by using which mathematical operators will the expression become correct? 30 ? 6 ? 4 ? 5 ? 4 30 ? 6 ? 4 ? 5 ? 4

Accepted Answer

Substitute the operators from option 1: 30 - 6 = 4 × 5 + 4. Applying BODMAS, the RHS becomes 20 + 4 = 24, which perfectly matches the LHS (24).