SSC CGL Undated PYQs

Question 1

The difference between the compound interest compounding half yearly for 1 year and the simple interest for 1 year on a certain sum of money lent out at 8% per annum is Rs 64. What is the sum (in Rs)?

Accepted Answer

For CI half-yearly, the rate is 4% per 6 months. Effective CI for 1 year is 8.16%. SI is 8%. The difference is 0.16%. Thus, 0.16% of Principal = 64, giving Principal = 40000.

Question 2

What is an exothermic reaction?

Accepted Answer

An exothermic reaction releases energy, usually in the form of heat or light, into its surroundings. 'Exo' means outside and 'thermic' relates to heat.

Question 3

If x3 + 2x2 – 5x + k is divisible by x + 1, then what is the value of k?

Accepted Answer

By the Remainder Theorem, substitute x = -1 into the polynomial. We get (-1)³ + 2(-1)² - 5(-1) + k = 0. This simplifies to -1 + 2 + 5 + k = 0, so k = -6.

Question 4

If a3 + b3 = 19 and a + b = 1, then what is the value of ab?

Accepted Answer

Use the formula a³ + b³ = (a + b)((a + b)² - 3ab). Substituting the given values, 19 = 1(1² - 3ab), which gives 3ab = -18, so ab = -6.

Question 5

_________ says that the marginal product of a factor input initially rises with its employment level. But after reaching a certain level of employment, it starts falling.

Accepted Answer

The Law of Variable Proportions states that as more of a variable input is added to fixed inputs, the marginal product initially increases, then diminishes, and eventually becomes negative.

Question 6

Who discovered Antarctica?

Accepted Answer

Captain James Cook was the first explorer to cross the Antarctic Circle in 1773, paving the way for the eventual discovery of the frozen continent.

Question 7

In the following question, select the related number from the given alternatives. AKP : 1121256 : : LNO : ?

Accepted Answer

Each letter is replaced by the square of its alphabetical position. A(1)→1, K(11)→121, P(16)→256. Similarly, L(12)→144, N(14)→196, O(15)→225, giving 144196225.

Question 8

Which dynasty came to power in India after the Tughlaq dynasty?

Accepted Answer

The chronological order of the Delhi Sultanate is Slave, Khilji, Tughlaq, Sayyid, and Lodi. Therefore, the Sayyid dynasty (1414-1451) immediately succeeded the Tughlaq dynasty after Timur's invasion.

Question 9

In Microsoft Word, _______ allows us to move selected paragraphs to the right.

Accepted Answer

In MS Word, the 'Increase Indent' feature pushes the selected paragraph away from the left margin towards the right. 'Decrease Indent' moves it back to the left.

Question 10

In the following question, correct the equation by interchanging the two signs. 6 ÷ 17 x 51 + 6 – 12 = – 4 6 ÷ 17 x 51 + 6 – 12 = – 4

Accepted Answer

Swap x and ÷: The equation becomes 6 x 17 ÷ 51 + 6 - 12. Using BODMAS, 17 ÷ 51 = 1/3. Then 6 x (1/3) = 2. Finally, 2 + 6 - 12 = 8 - 12 = -4.

Question 11

Who among the following is a Sanjay Chopra Award recipient for 2016?

Accepted Answer

Arjun Singh from Uttarakhand received the Sanjay Chopra Award in 2016 for his exceptional bravery in saving his mother from a tiger attack.

Question 12

Locust, Butterfly, Scorpion and Prawn are all examples of which Phylum?

Accepted Answer

These animals possess jointed appendages and an exoskeleton, which are the defining characteristics of the phylum Arthropoda, the largest phylum in the animal kingdom.

Question 13

There are total _________ parliamentary seats (Rajya Sabha constituency) in Maharashtra.

Accepted Answer

Maharashtra has 19 Rajya Sabha seats and 48 Lok Sabha seats. It has the second-highest number of Rajya Sabha seats in India after Uttar Pradesh (31).

Question 14

In ΔPQR, ∠R = 54°, the perpendicular bisector of PQ at S meets QR at T. If ∠TPR = 46°, then what is the value (in degrees) of ∠PQR?

Accepted Answer

Since ST is the perpendicular bisector of PQ, TP = TQ, making ∠TQP = ∠TPQ = x. In ΔPQR, the sum of angles is (x + 46°) + x + 54° = 180°, giving x = 40°.

Question 15

What was invented by Zacharias Jansen?

Accepted Answer

Zacharias Jansen, a Dutch spectacle-maker, is widely credited with inventing the first optical telescope and the compound microscope in the late 16th century, revolutionizing the study of microbiology.

Question 16

Mahatma Gandhi in 1919 decided to launch a nationwide satyagrah against the proposed ________________.

Accepted Answer

In 1919, Mahatma Gandhi organized a nationwide Satyagraha against the Rowlatt Act, which allowed the British to imprison political activists without trial for up to two years.

Question 17

Which one of the following is a component of Food Security System?

Accepted Answer

The Food Security System in India consists of two main components: Buffer Stock and the Public Distribution System (PDS). Buffer stock ensures food availability during shortages.

Question 18

If on a Sale there is 30% discount on the marked price of Rs 2500, but the sale is done at Rs 1400 only. What additional discount (in %) did the customer get?

Accepted Answer

The first discount reduces the price to 70% of 2500, which is Rs 1750. The final price is Rs 1400, giving an additional discount of Rs 350. Thus, (350/1750)*100 = 20%.

Question 19

____________ scheme by the Central Government states that an insurance of 10 lakhs will cover each passenger traveling by Indian Rail while booking a ticket if an amount of 92paise is paid.

Accepted Answer

The Railway Travel Insurance scheme allows passengers booking e-tickets via IRCTC to opt for a ₹10 lakh travel insurance cover by paying a nominal premium of 92 paise.

Question 20

The 3rd and 7th term of an arithmetic progression are -9 and 11 respectively. What is the 15th term?

Accepted Answer

Using the AP formula a + (n-1)d, we get a + 2d = -9 and a + 6d = 11. Solving gives d = 5 and a = -19. The 15th term is -19 + 14(5) = 51.