SSC CGL Undated PYQs

Question 1

Who takes the decision regarding the savings and loan activities in a Self Help Group (SHG)?

Accepted Answer

In a Self Help Group (SHG), all major decisions regarding savings, loan amounts, interest rates, and repayment schedules are taken democratically by the members of the group themselves.

Question 2

If "–" means "added to", "+" means "divided by", "÷" means "multiplied by", "x" means "subtracted from", then 13 + 12 x 9 ÷ 3 – 6 = ?

Accepted Answer

Replace symbols to get 13 ÷ 12 - 9 x 3 + 6. Applying BODMAS: 13/12 - 27 + 6 = 13/12 - 21 = (13 - 252)/12 = -239/12.

Question 3

The northern plain of India has been formed by the interplay of the three major river systems, namely– the Indus, the Ganga and the ___________.

Accepted Answer

The northern plains of India are formed by the extensive alluvial deposits brought down by three major Himalayan river systems: the Indus, the Ganga, and the Brahmaputra.

Question 4

If x2+ y2 + z2 = xy + yz + zx, then what is the value of (7x + 3y – 5z)/5x?

Accepted Answer

The given condition x2 + y2 + z2 = xy + yz + zx implies x = y = z. Substituting y and z with x in the expression gives (7x + 3x - 5x)/5x = 5x/5x = 1.

Question 5

In March 2017, in which country was "world's largest artificial sun" switched on?

Accepted Answer

In March 2017, Germany switched on 'Synlight', the world's largest artificial sun. It uses 149 giant xenon short-arc lamps to simulate sunlight for producing climate-friendly solar fuels like hydrogen.

Question 6

Which article was referred to as the 'the heart and soul' of the constitution by Dr. B. R. Ambedkar?

Accepted Answer

Article 32 provides the right to constitutional remedies, allowing citizens to approach the Supreme Court to protect fundamental rights. Hence, Dr. Ambedkar called it the heart and soul.

Question 7

Who invented the waterproof raincoat?

Accepted Answer

Scottish chemist Charles Macintosh invented the waterproof raincoat in 1823. He achieved this by sandwiching a layer of liquid rubber between two pieces of fabric, making it impermeable to water.

Question 8

The ratio of present ages of L and N is 7 : 5. If the age of N after seven years will be 32 years, then what is the present age (in years) of L?

Accepted Answer

N's present age is 32 - 7 = 25 years. Since the ratio of L to N is 7:5, 5 units = 25, so 1 unit = 5. L's present age is 7 × 5 = 35 years.

Question 9

Energy in the form of heat is wasted when a machine is operated. This heat is generated due to ___________.

Accepted Answer

When machine parts move against each other, friction opposes the motion, converting kinetic energy into wasted heat energy.

Question 10

Who invented the electric tram?

Accepted Answer

Fyodor Pirotsky, a Ukrainian-born engineer, invented the world's first electric tram in 1880. He successfully tested it in Saint Petersburg, revolutionizing urban public transportation.

Question 11

Who was the pioneer of Chipko movement of 1973?

Accepted Answer

Sunderlal Bahuguna was the pioneer of the 1973 Chipko movement in Uttarakhand. He led the peaceful protest to protect forests by hugging trees to prevent them from being cut down.

Question 12

In which battle was Siraj ud–Daulah defeated by Lord Clive?

Accepted Answer

Siraj ud-Daulah, the Nawab of Bengal, was defeated by the British East India Company led by Robert Clive in the Battle of Plassey on June 23, 1757.

Question 13

If tan2 θ + cot2 θ = 2, then what is the value of 2sec θ cosec θ?

Accepted Answer

Given tan²θ + cot²θ = 2, we get (tanθ - cotθ)² = 0, so tanθ = cotθ, meaning θ = 45°. Thus, 2sec(45°)cosec(45°) = 2(√2)(√2) = 4.

Question 14

In the following question, select the missing number from the given series. 3, 7, 16, 35, ?

Accepted Answer

The pattern is multiply by 2 and add consecutive integers: 3×2+1=7, 7×2+2=16, 16×2+3=35. So, the next number is 35×2+4 = 74.

Question 15

The force exerted by a magnet is an example of _________.

Accepted Answer

A magnet can exert a pull or push on magnetic materials from a distance without physically touching them, making it a non-contact force.

Question 16

If the ___________ firm has zero costs or only has fixed cost, the quantity supplied in equilibrium is given by the point where the marginal revenue is zero.

Accepted Answer

For a monopoly with zero marginal cost, profit maximization (MR = MC) occurs where MR = 0. The firm produces up to this point to maximize its total revenue.

Question 17

___________ is obtained by evaporation of sea.

Accepted Answer

Seawater contains a high concentration of dissolved minerals, primarily sodium chloride. When seawater evaporates under the sun, the water turns into vapor, leaving solid salt crystals behind.

Question 18

Two cars A and B travel from one city to another, at speeds of 35 km/hr and 45 km/hr respectively. If car B takes 2 hours lesser time than car A for the journey, then the distance (in kms) between the two cities is?

Accepted Answer

Let distance be D. The time difference is D/35 - D/45 = 2. Solving this gives 10D / (35 × 45) = 2, which simplifies to D = 315 km.

Question 19

A woman in a shopping complex walks 150 m East, then she turns North and walks 180 m, then she turns West and walks 70 m, then she turns to her left and walks 180 m. Where is she now with reference to her starting position?

Accepted Answer

She goes 150m East, 180m North, 70m West, then turns left (South) for 180m. The North and South distances cancel out. She is 150 - 70 = 80m East of the start.

Question 20

∆ ABC is right angled at B. If m∠A = 30°., then Sec C =?

Accepted Answer

In right ∆ABC, ∠B = 90° and ∠A = 30°, so ∠C = 180° - 120° = 60°. The value of Sec 60° is 2.