Staff Selection Commission Sub Inspector Exam
Question : The ratio of the radii of two cylinders is $2:3$ and the ratio of their heights is $5:3$. The ratio of their volumes will be:
Option 1: $9:4$
Option 2: $20:27$
Option 3: $4:9$
Option 4: $27:20$
Correct Answer: $20:27$
Solution : Given: The ratio of the radii of two cylinders is $2:3$ and the ratio of their heights is $5:3$. Let the radii of the first cylinder = $2r$ units So, the radii of the second cylinder = $3r$ units Also, let their heights be $5h$
Question : A moneylender claims to lend money at the rate of 10% per annum simple interest. However, he takes the interest in advance when he lends a sum for one year. At what interest rate does he lend the money?
Option 1: $10$%
Option 2: $10\frac{1}{9}$%
Option 3: $11$%
Option 4: $11\frac{1}{9}$%
Correct Answer: $11\frac{1}{9}$%
Solution : Given: Rate = 10% Let the amount lent be Rs. 100. Interest =10% of 100 = Rs. 10 Actual amount = 100 – 10 = Rs. 90 Actual rate = $10×\frac{100}{90}=11\frac{1}{9}$% Hence, the correct answer is $11\frac{1}{9}$%.
Question : Directions: Select the set in which the numbers are related in the same way as the numbers of the following sets. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying etc. 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is NOT allowed.) (6, 12, 228) (8, 3, 515)
Option 1: (3, 28, 56)
Option 2: (13, 11, 172)
Option 3: (4, 18, 82)
Option 4: (9, 23, 119)
Correct Answer: (4, 18, 82)
Solution : Given: (6, 12, 228); (8, 3, 515)
Here, (6, 12, 228)→(6)3 + 12 = 216 + 12 = 228 (8, 3, 515)→(8)3 + 3 = 512 + 3 = 515
Let's check the options – First option: (3, 28, 56)→(3)3
Question : Select the most appropriate meaning of the given idiom. Go round in circles
Option 1: Be forced to explain your actions and probably be punished
Option 2: Make no progress in an argument or discussion
Option 3: Become very confused when you are trying to explain something
Option 4: Believe something good about someone even though you could believe either good or bad
Correct Answer: Make no progress in an argument or discussion
Solution : The correct option is the second option.
Explanation: This idiom refers to a situation where people keep discussing or debating a topic without reaching a conclusion or making any progress. It's like going in circles, covering the same
Question : If the difference between the average of x, y and y, z is 12, then the difference between x and z is:
Option 1: 24
Option 2: 48
Option 3: 12
Option 4: 6
Correct Answer: 24
Solution : Given: The difference between the average of (x, y) and (y, z) is 12. According to the question, $\frac{\text{x+y}}{2}$–$\frac{\text{y+z}}{2}$ = 12 ⇒ x + y – y – z = 24 ⇒ x – z = 24 Hence, the correct answer is 24.
Question : Select the most appropriate option that can substitute the underlined segment in the given sentence. The platter was insipid, so we refused to pay the bill.
Option 1: full of flavours
Option 2: filled with dirt
Option 3: full of spices
Option 4: lacking taste
Correct Answer: lacking taste
Solution : The correct answer is the fourth option.
"Insipid" means lacking flavour or taste, so "lacking taste" accurately conveys the same meaning. It describes the platter as dull or unappetising, which aligns with the context of the sentence, where the speaker refused to pay the
Question : Directions: In the following question, the given sentence has four parts marked P, Q, R, and S. Choose the part of the sentence with the error and select it as your answer. If there is no error, select "No Error (S)" as your answer.
(P) Sakshi wrote essay (Q) so well that (R) her teacher was very pleased with her. (S) No Error
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 1
Solution : The error is in part (P) marked by the first option.
Explanation: The indefinite article "an" is needed before "essay" to make the sentence grammatically correct, as the article "an" is used before the words that start with a vowel sound.
So, the correct sentence
Question : Water gas is the combination of:
Option 1: CO and H2
Option 2: CO2 and H2
Option 3: CO and H2O
Option 4: CO2 and CO
Correct Answer: CO and H2
Solution : The correct options are CO and H2.
Question : The collections of Vedic hymns or mantras are known as ______.
Option 1: Samhita
Option 2: Vidatha
Option 3: Jnati
Option 4: Bali
Correct Answer: Samhita
Solution : The correct option is Samhita.
"Samhitas" are compilations of Vedic hymns or mantras. The word "Samhita" designates a group of sacred songs, chants, prayers and rites that make up the central portion of the Vedas, the age-old holy writings of Hinduism. There are four
Question : Directions: Study the following histogram and answer the questions. The number of persons in the age group 20-30 years is:
Option 1: 475
Option 2: 400
Option 3: 300
Option 4: 700
Correct Answer: 400
Solution : Person in the class interval 20–25 = 250 Person in the class interval 25–30 = 150 Thus, the number of persons in the age group 20–30 = 250 + 150 = 400 Hence, the correct answer is 400.
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