SSC CGL Undated PYQs

Question 1

Three bottles of equal capacity containing mixture of milk and water in ratio 2 : 5, 3 : 4 and 4 : 5 respectively. These three bottles are emptied into a large bottle. What will be the ratio of milk and water respectively in the large bottle?

Accepted Answer

Equate the capacities using the LCM of the sum of ratios (7, 7, 9), which is 63. Total milk = 18 + 27 + 28 = 73. Total water = 45 + 36 + 35 = 116. Ratio is 73:116.

Question 2

Select the related word from the given alternatives. Swim : Water :: Fly : ?

Accepted Answer

Just as swimming is an action performed in the water, flying is an action performed in the air. The relationship is 'Action : Medium'.

Question 3

The sum of a non-zero number and twenty times its reciprocal is 9. What is the number?

Accepted Answer

Let the number be x. The equation is x + 20/x = 9, which simplifies to x^2 - 9x + 20 = 0. The roots are 4 and 5. Option 4 matches.

Question 4

The study of individual markets of demand and supply in which the 'players', or the decision makers, were also individuals (buyers or sellers, even companies) who were seen as trying to maximize their profits (as producers or sellers) and their personal satisfaction or welfare levels (as consumers) is called?

Accepted Answer

Microeconomics focuses on the behavior of individual consumers and firms in making decisions regarding the allocation of scarce resources, aiming to maximize personal satisfaction or profits.

Question 5

Which National Park in Nepal is a continuation of India's Valmiki National Park?

Accepted Answer

Chitwan National Park in Nepal is contiguous with India's Valmiki National Park in Bihar, forming a major transboundary conservation area for tigers and rhinos.

Question 6

A can do a work in 12 days and B in 24 days. If they work on it together for 4 days, then what fraction of work is left?

Accepted Answer

Total work = LCM(12, 24) = 24 units. A's efficiency = 2, B's = 1. Together they do 3 units/day. In 4 days, they complete 12 units. Fraction left = (24 - 12)/24 = 1/2.

Question 7

What is the value of Cot 60o - Cos 45o?

Accepted Answer

We know Cot 60° = 1/√3 and Cos 45° = 1/√2. Subtracting them gives (1/√3) - (1/√2) = (√2 - √3)/√6.

Question 8

Brownish ﬁlm formed on iron when left in open is called?

Accepted Answer

When iron is exposed to oxygen and moisture in the air, it undergoes oxidation to form iron oxide, commonly known as rust, which appears as a brownish film.

Question 9

According to the categories of land mentioned in the Chola inscriptions ___________ was known as the land of non-Brahmana peasant proprietors?

Accepted Answer

In Chola inscriptions, Vellanvagai was land for non-Brahmana peasant proprietors. Brahmadeya was gifted to Brahmanas, Shalabhoga for school maintenance, and Devadana was gifted to temples.

Question 10

Who among the following was awarded with Dhronacharya Award 2016 in the field of 'Swimming (Lifetime)'?

Accepted Answer

Shri S. Pradeep Kumar received the Dronacharya Award in 2016 for his lifetime contribution to swimming. The award recognizes outstanding coaches in sports.

Question 11

What is the difference (in Rs) between the compound interests on Rs. 4000 for 1 year at 12% per annum compounded yearly and half-yearly? 9/7/2017 Staff Selection Commision

Accepted Answer

For half-yearly compounding, the rate is 6% for 2 cycles. Effective rate = 6+6+(36/100) = 12.36%. Yearly rate is 12%. The difference is 0.36% of 4000, which equals 14.4.

Question 12

Edward Jenner discovered vaccine for which of the following disease?

Accepted Answer

Edward Jenner discovered the smallpox vaccine in 1796, which was the world's first successful vaccine. He used cowpox material to create immunity against smallpox.

Question 13

Select the related word from the given alternatives. Cow : Milk :: Bees : ?

Accepted Answer

Just as a cow produces milk for human consumption, bees produce honey. The relationship is based on the organism and the primary product it yields.

Question 14

Which of the following three R's are regarded as environment friendly?

Accepted Answer

The 3 R's of waste management are Reduce (minimize waste), Reuse (use items multiple times), and Recycle (convert waste into new materials) to protect the environment.

Question 15

'Udey Desh ka Aam Nagrik' (UDAN) scheme for regional air connectivity will provide travel to tier 2 and tier 3 cities at the rate of Rs _____ per hour.

Accepted Answer

Under the UDAN scheme launched by the Ministry of Civil Aviation, airfares are capped at Rs 2500 per hour of flight for regional routes connecting tier 2 and tier 3 cities.

Question 16

If "α" denotes "subtracted from", "β" denotes "multiplied by", "θ" denotes "added to" and "δ" denotes "divided by", then 10 θ 8 β 4 δ 8 α 9 = ? 10 θ 8 β 4 δ 8 α 9 = ?

Accepted Answer

Replace symbols with mathematical operators: 10 + 8 × 4 ÷ 8 - 9. Using BODMAS, first divide (4÷8=0.5), then multiply (8×0.5=4), add (10+4=14), and subtract (14-9=5).

Question 17

What is the third proportional to 10 and 25?

Accepted Answer

The third proportional c to a and b is calculated using the formula c = b² / a. Here, c = (25 × 25) / 10 = 625 / 10 = 62.5.

Question 18

Around how much percent of earth's surface is covered with water?

Accepted Answer

About 71% of the Earth's surface is water-covered, mostly by oceans. Therefore, the 70-80% range is the correct estimate for the total water coverage on our planet.

Question 19

What is the literal meaning of 'Certiorari'? ?

Accepted Answer

'Certiorari' is a Latin term meaning 'to be certified' or 'to be informed'. It is a writ issued by a higher court to a lower court to review its decision.

Question 20

The ________ balance is the sum of the balance of merchandise trade, services and net transfers received from the rest of the world. 9/7/2017 Staff Selection Commision

Accepted Answer

The Current Account balance records a nation's transactions with the rest of the world, specifically its net trade in goods and services, net earnings on cross-border investments, and net transfer payments.