SSC CGL Undated PYQs

Question 1

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? 9/7/2017 Staff Selection Commision

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 2

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 3

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 4

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 5

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 6

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 7

______ 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 8

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

Which colour is formed when Red and Green are mixed? 9/7/2017 Staff Selection Commision http://thepracticetest.in/cs_cglet1_17/response_questions.php?t_id=MTAwODIwMTc=&appid=1368062d74107fc05177712c90c3885c 15/27

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 10

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 11

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 12

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.

Question 13

If the total trade of the country in year 3 was 1183 crore dollars, then what was the difference (in crore dollars) between exports and imports of the country in that year?

Accepted Answer

Based on the data graph (typically showing a 4:3 ratio for year 3), total trade is 7 units = 1183. The difference is 1 unit, which equals 1183 / 7 = 169.

Question 14

A fraction becomes 6/5 when 5 is added to its numerator and becomes 1/2 when 4 is added to its denominator. What will be the value of the fraction? 9/8/2017 Staff Selection Commision

Accepted Answer

Let the fraction be x/y. We have (x+5)/y = 6/5 and x/(y+4) = 1/2. Solving these gives y = 2x - 4. Substituting yields 7x = 49, so x = 7 and y = 10. The fraction is 7/10.

Question 15

If 2x/3 - [5(4x/5 - 4/3)]/2 = 1/3, then what is the value of x?

Accepted Answer

Expand the bracket: 5(4x/5 - 4/3) = 4x - 20/3. Divide by 2 to get 2x - 10/3. The equation becomes 2x/3 - (2x - 10/3) = 1/3. Solving gives -4x/3 = -9/3, so x = 9/4.

Question 16

Process of gaining electrons is known as _____.

Accepted Answer

Reduction is the chemical process where an atom or ion gains electrons, decreasing its oxidation state. Conversely, oxidation is the loss of electrons (remember OIL RIG).

Question 17

Select the related word from the given alternatives. Cotton : White :: Coal : ?

Accepted Answer

Cotton is naturally white in color. Similarly, the natural color of coal is black. The relationship is strictly based on the object and its primary color.

Question 18

If objects appear enlarged and inverted in a rear view mirror, then which type of mirror is used?

Accepted Answer

A concave mirror forms enlarged and inverted real images when the object is placed beyond its focal point. Convex mirrors always form diminished, erect images.

Question 19

At which rate, Reserve Bank of India borrows money from commercial banks?

Accepted Answer

Reverse Repo Rate is the rate at which the RBI borrows funds from commercial banks. It is primarily used to control the money supply and absorb excess liquidity from the market.

Question 20

A person lent certain sum of money at 5% per annum simple interest and in 15 years the interest amounted to Rs 250 less than the sum lent. What was the sum lent (in Rs)?

Accepted Answer

Let the sum be P. Simple Interest = (P × 5 × 15) / 100 = 0.75P. Given, P - 0.75P = 250. So, 0.25P = 250, which gives P = 1000.