SSC CGL Undated PYQs

Question 1

Friction is caused by the ______________ on the two surfaces in contact.

Accepted Answer

Friction occurs because microscopic irregularities (roughness) on the two contacting surfaces interlock with each other, resisting relative motion.

Question 2

Sum of twice a fraction and 5 times its reciprocal is 7. What is the fraction?

Accepted Answer

Let the fraction be x. The equation is 2x + 5/x = 7, which gives 2x² - 7x + 5 = 0. Solving yields x = 1 or x = 5/2. Option 3 matches.

Question 3

The total trade of 5 years is 3800, 3600, 2800, 3900 and 5000 crore dollars respectively. What is the difference (in crore dollars) in the average exports and average imports respectively? ?

Accepted Answer

Based on the missing DI chart, calculate the sum of exports and imports separately. Find their difference and divide by 5 (number of years) to get the average difference of 60.

Question 4

What is the ratio of Gross Domestic Product (GDP) of Country E to Total of GDPs of countries A, C and F taken together?

Accepted Answer

Find the GDP value for Country E from the given data. Then, sum the GDPs of A, C, and F. Divide E's GDP by this sum to get the simplified ratio 3:5.

Question 5

If 4(x+y) = 256 and (256)(x-y) = 4, then what is the value of x and y?

Accepted Answer

Since 4^(x+y) = 4^4, we get x+y = 4. Also, 256^(x-y) = 4 means 4^(4(x-y)) = 4^1, so x-y = 1/4. Adding both gives 2x = 17/4, so x = 17/8 and y = 15/8.

Question 6

David Warner plays cricket for which country?

Accepted Answer

David Warner is a prominent Australian international cricketer and a former captain of the Australian national team. He is widely known as an aggressive left-handed opening batsman.

Question 7

An IP address is _____ bit number.

Accepted Answer

A standard IPv4 address is a 32-bit number that uniquely identifies a device on a network, typically represented in dot-decimal notation.

Question 8

Improve the bracketed part of the sentence. The government plans to (take up) the construction project soon.

Accepted Answer

The phrasal verb 'take up' means to start a new activity or hobby, or to occupy time/space. In this context, it correctly implies starting the construction project.

Question 9

In a class of 39 students there are 26 girls. The average weight of these girls is 42 Kgs and average weight of the full class is 48 kgs. What is the average weight (in kgs) of the boys of the class?

Accepted Answer

Total weight = 39 × 48 = 1872 kg. Girls' weight = 26 × 42 = 1092 kg. Boys' weight = 1872 - 1092 = 780 kg. Boys' average = 780 / 13 = 60 kg.

Question 10

In the following question, select the related word from the given alternatives. Player : Team : : Minister : ?

Accepted Answer

A group of players collectively forms a team. Similarly, a group of ministers collectively forms a council (Council of Ministers).

Question 11

Who discovered Circulatory System?

Accepted Answer

William Harvey, an English physician, discovered the circulatory system in 1628. He accurately described how blood is pumped around the body by the heart through veins and arteries.

Question 12

The Patkai hills belong to which mountain ranges?

Accepted Answer

The Patkai hills are located on India's north-eastern border with Myanmar. They are a part of the Purvanchal range, which forms the eastern extension of the Himalayas.

Question 13

Which of the statements given below are correct? 1. The author of the novel 'Half of a Yellow Sun' is Chimamanda Ngozi Adichie. 2. The author of the novel 'Middlesex' is Jeffrey Eugenides. 3. The author of the novel 'Missile Gap' is China Mieville.

Accepted Answer

Statements 1 and 2 are correct. However, statement 3 is incorrect because the novella 'Missile Gap' was written by Charles Stross, not China Mieville.

Question 14

If 15@7=44; 5@4=18; 6@17=46; then what is the value of 17@4=?

Accepted Answer

The pattern follows the rule a@b = 2(a + b). Therefore, for 17@4, we calculate 2 × (17 + 4) = 2 × 21 = 42.

Question 15

______ Disk Encryption is a technology (hardware or software) where data is encrypted before storage.

Accepted Answer

Whole Disk Encryption (WDE) or Full Disk Encryption protects the entire volume, ensuring all data, including the operating system, is encrypted before being saved to the storage drive.

Question 16

If 5 # 9 @ 7 = 52 and 3 @ 9 # 2 = – 89, then 7 # 6 @ 9 = ?

Accepted Answer

The symbol '#' combines the digits and '@' means subtraction. So, 59 - 7 = 52 and 3 - 92 = -89. Applying this, 76 - 9 = 67.

Question 17

Which colour is formed when Red and Green are mixed?

Accepted Answer

In the additive color model (like light), mixing the primary colors red and green produces yellow. This differs from mixing paints (subtractive), which would yield a brownish color.

Question 18

Which of the following is called GDP Deflator?

Accepted Answer

The GDP deflator measures inflation by comparing the current prices of all goods and services (nominal GDP) to base-year prices (real GDP). Formula: (Nominal GDP / Real GDP) × 100.

Question 19

Pearl Towers is taller than Sky Towers but shorter than Unity Towers. Unity Towers and Cyber Towers are of same height. Pearl Towers is shorter than Indus Towers. Amongst the buildings, who is the second shortest?

Accepted Answer

Based on the given information, the height order is Sky < Pearl < Unity = Cyber, and Pearl < Indus. Thus, Sky is the shortest and Pearl is the second shortest.

Question 20

What is the simpliﬁed value of (sin A – cosec A)(sec A – cos A) (tan A + cot A)?

Accepted Answer

Convert all terms to sin and cos: (-cos²A/sin A) × (sin²A/cos A) × (1/(sin A cos A)). Multiplying these gives -(sin²A cos²A)/(sin²A cos²A) = -1.