SSC CGL Undated PYQs

Question 1

Convex and concave mirrors are examples of?

Accepted Answer

Convex and concave mirrors are curved mirrors that form a part of a hollow sphere, which is why they are classified as spherical mirrors.

Question 2

Which wild life sanctuary has more tigers than D but less than F?

Accepted Answer

Based on the provided data or sequence, sanctuary B has a tiger count strictly greater than D but less than F. Therefore, B satisfies both conditions.

Question 3

The sum of a number and 4 times its reciprocal is 5. What is the number?

Accepted Answer

Let the number be x. The equation is x + 4/x = 5, which simplifies to x² - 5x + 4 = 0. Solving gives x = 4 or 1. Option 1 matches.

Question 4

Which of the following is represented by 'Lorenz Curve'?

Accepted Answer

The Lorenz curve is a graphical representation of wealth or income distribution developed by Max Lorenz. It shows the proportion of income earned by any given percentage of the population.

Question 5

In the following question, by using which mathematical operators will the expression become correct? 27 ? 9 ? 18 ? 24 ? 12 27 ? 9 ? 18 ? 24 ? 12

Accepted Answer

Substitute option 3: 27 ÷ 9 × 18 > 24 + 12. Applying BODMAS, 3 × 18 > 36, which gives 54 > 36. This is mathematically correct.

Question 6

"Bankruptcy and insolvency" is listed in the __________ list given in the Seventh Schedule in the Constitution of India.

Accepted Answer

"Bankruptcy and insolvency" falls under Entry 9 of the Concurrent List (List III) in the Seventh Schedule, meaning both Parliament and state legislatures can make laws regarding it.

Question 7

In the following question, select the related letters from the given alternatives. KLMN : IJKL : : TUVW : ?

Accepted Answer

Each letter in the first term is shifted backward by 2 positions (-2) to get the second term. Applying the same logic to TUVW gives RSTU.

Question 8

Sher Khan defeated _________ at Chausa (1539) and Kanauj (1540), forcing him to flee to Iran.

Accepted Answer

Sher Shah Suri (Sher Khan) defeated the Mughal emperor Humayun in the Battle of Chausa (1539) and the Battle of Kanauj (1540), forcing him into exile in Iran.

Question 9

The sum of a fraction and 7 times its reciprocal is 11/2. What is the fraction?

Accepted Answer

Let the fraction be x. The equation is x + 7/x = 11/2. Multiplying by 2x gives 2x^2 - 11x + 14 = 0. Solving this quadratic yields x = 7/2 or 2.

Question 10

_____________ scheme by the Central Government will strengthen the bond between all the states, regions, and districts of India.

Accepted Answer

'Ek Bharat Shrestha Bharat' was launched to enhance interaction and promote mutual understanding between people of different states and UTs, strengthening the cultural unity of India.

Question 11

If time taken in seats is 192 hours, then what is the time taken (in hours) in glass?

Accepted Answer

Using the provided chart data, determine the ratio of glass to seats. Multiply the given time for seats (192 hours) by this ratio to calculate the correct time of 256 hours.

Question 12

Improve the bracketed part of the sentence. If you talk to her nicely, she will probably (allow you) her notes.

Accepted Answer

The verb 'let' is followed by a bare infinitive (verb without 'to'). 'Allow' is followed by 'to' + infinitive. Thus, 'let you have' is correct.

Question 13

If inflation is measured as increase in price index and the price index was 200 in the beginning of 2015 in country D then what is the index at the end of 2016?

Accepted Answer

Using the provided data chart, apply the successive inflation rates for 2015 and 2016 to the initial index of 200. Calculating 200 × (1 + r1/100) × (1 + r2/100) gives 214.2.

Question 14

If a + b = 3 and ab = -4, then what is the value of a3 + b3?

Accepted Answer

Use the algebraic identity a³ + b³ = (a+b)³ - 3ab(a+b). Substituting the given values: 3³ - 3(-4)(3) = 27 + 36 = 63.

Question 15

What is the chemical formula for Sodium Chloride (Salt)?

Accepted Answer

Sodium (Na) has a +1 charge and Chlorine (Cl) has a -1 charge. They combine in a 1:1 ratio to form the neutral ionic compound NaCl, commonly known as table salt.

Question 16

The perimeter of an isosceles triangle is 32 cm and each of the equal sides is 5/6 times of the base. What is the area (in cm2) of the triangle ?

Accepted Answer

Let base be 6x. Equal sides are 5x each. Perimeter = 16x = 32, so x=2. Sides are 10, 10, 12. Height = √(10² - 6²) = 8. Area = 1/2 × 12 × 8 = 48.

Question 17

A milkman buys milk at Rs 25 per litre and adds 1/4 of water to it and sells the mixture at Rs 26 per litre. His gain (in %) is?

Accepted Answer

Assume he buys 4L milk for Rs 100. Adding 1/4 water makes it 5L. Selling 5L at Rs 26/L yields Rs 130. Profit is Rs 30 on Rs 100, which is 30%.

Question 18

The company reported a loss in which year?

Accepted Answer

Based on the provided data chart, the expenditure exceeded the revenue only in the year 2013, resulting in a net loss for the company.

Question 19

Select the related number from the given alternatives. 2.25 : 13/4 :: 3.75 : ?

Accepted Answer

Add 1 to the first number and convert it to a fraction. 2.25 + 1 = 3.25 = 13/4. Similarly, 3.75 + 1 = 4.75 = 19/4.

Question 20

Jama Masjid of Delhi was built by?

Accepted Answer

Mughal Emperor Shah Jahan built the Jama Masjid in Delhi between 1650 and 1656. It is one of the largest mosques in India, constructed using red sandstone and white marble.