Staff Selection Commission Combined Graduate Level Exam
Question : In nuclear reactors, graphite is used as a / an
Option 1: Fuel
Option 2: Lubricant
Option 3: Moderator
Option 4: Insulator
Correct Answer: Moderator
Solution : The correct option is Moderator.
Graphite is used in nuclear reactors as a "moderator." A moderator is a substance that slows neutrons generated during nuclear fission processes. Slowing down neutrons increases their chance of interacting with fissile materials like uranium-235 or plutonium-239, boosting the possibility
Question : Aarti can type 85 pages in 10 hours. Aarti and Bina together can type 500 pages in 40 hours. How much time will Bina take to type 40 pages?
Option 1: 10 hours
Option 2: 15 hours
Option 3: 14 hours
Option 4: 12 hours
Correct Answer: 10 hours
Solution : Aarti can type 85 pages in 10 hours. Aarti can type in 1 hour = $\frac{85}{10} = 8.5$ pages Aarti and Bina together can type 500 pages in 40 hours. Aarti and Bina together can type in 1 hour $=\frac{500}{40} = 12.5$ pages Bina
Question : Select the most appropriate meaning of the underlined idiom in the given sentence. The news of a leopard in the city spread like wildfire.
Option 1: caused damage
Option 2: caused fear
Option 3: spread slowly
Option 4: spread rapidly
Correct Answer: spread rapidly
Solution : The correct choice is the fourth option.
The idiom spread like wildfire is a simile used to convey the rapid and uncontrollable dissemination of information or an event. In this sentence, the news of a leopard in the city is compared to the rapid
Question : Directions: Three of the following four triads are alike in a certain way as they are formed by performing the same mathematical operations among themselves and thus form a group. Which triad does NOT belong to that group?
Option 1: 12 : 47 : 60
Option 2: 4 : 16 : 20
Option 3: 2 : 7 : 10
Option 4: 5 : 19 : 25
Correct Answer: 4 : 16 : 20
Solution : Let's check the given options – First option: 12 : 47 : 60; (12 + 47) + 1 = 59 + 1 = 60 Second option: 4 : 16 : 20; (4 + 16) + 1 = 20 + 1 =
Question : The study of population is called?
Option 1: Cartography
Option 2: Anthropology
Option 3: Demography
Option 4: Biography
Correct Answer: Demography
Solution : The correct answer is Demography.
The study of population is referred to as "demography." Demography is the scientific study of population statistics and mathematics, encompassing population number, distribution, composition, growth, and numerous demographic processes such as birth, death, migration, and fertility rates. Demographers study population
Question : In how much time will the simple interest on a certain sum of money be $\frac{6}{5}$th times of the sum at 20% per annum?
Option 1: 7 years
Option 2: 8 years
Option 3: 5 years
Option 4: 6 years
Correct Answer: 6 years
Solution : Given that, Simple interest = $\frac{6}{5}×$ Principal Rate = 20% per annum Simple interest $=\frac{\text{Principal × Rate × Time}}{100}$ ⇒ $\frac{6}{5}× \text{Principal}= \frac{\text{Principal × 20 × Time}}{100}$ $\therefore$ Time $= 6$ years Hence, the correct answer is 6 years.
Question : Direction: In the following question, select the one that is different from the other three alternatives.
Option 1: $\frac{3}{7}$
Option 2: $\frac{7}{2}$
Option 3: $\frac{4}{13}$
Option 4: $\frac{13}{16}$
Correct Answer: $\frac{7}{2}$
Solution : Let's check the options —
First option: $\frac{3}{7}$ $\frac{3}{7}$ → Here, the numerator is smaller than the denominator.
Second option: $\frac{7}{2}$ $\frac{7}{2}$ → Here, the numerator is greater than the denominator. Hence, it's the odd one out.
Third option: $\frac{4}{13}$ $\frac{4}{13}$ → Here, the numerator
Question : " Lona " is related to which game ?
Option 1: Kho Kho
Option 2: Kabaddi
Option 3: Lawn Tennis
Option 4: Badminton
Correct Answer: Kabaddi
Solution : The correct option is - Kabaddi.
A team in Kabaddi receives an additional two points, or "lona," if the entire opposition team is declared out.
Raiders, anti-raiders, tag, midline, and raid are other terms commonly used in the Kabaddi game.
Question : Directions: By Interchanging the given two numbers which of the following equations will be correct? 1 and 9
Option 1: 9 × 3 – 4 ÷ 2 + 1 = 10
Option 2: 1 + 9 × 3 – 4 ÷ 2 = 18
Option 3: 9 × 2 + 1 – 8 ÷ 4 = 12
Option 4: 9 – 1 + 6 ÷ 2 × 3 = 7
Correct Answer: 9 × 3 – 4 ÷ 2 + 1 = 10
Solution : Given: Interchange 1 and 9
Interchanging 1 and 9 in each of the given options – First option: 9 × 3 – 4 ÷ 2 + 1 = 10 1 × 3 – 4 ÷
Question : Directions: In the following question, some parts of the sentence have errors, and some are correct. Find out which part of the sentence has an error. The number of that part is the answer. If a sentence is error-free, your answer is "No Error".
Ann received the promotion instead of Susan (1) / as Ann is senior than Susan in age (2) / though Susan had worked there before Ann. (3) / No Error (4)
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (2)
Solution : The error lies in the second part of the sentence.
"Senior" is not used in this context to compare ages; it typically refers to someone who holds a higher position or rank in a group or organization. "Older" is the appropriate term for comparing ages.
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