Staff Selection Commission Sub Inspector Exam
Question : What will be the difference between the total surface area and the curved surface area of a hemisphere having a 4 cm diameter in cm2?
Option 1: $5\pi $
Option 2: $8\pi $
Option 3: $4\pi $
Option 4: $4.4\pi $
Correct Answer: $4\pi $
Solution : The total surface area of a hemisphere = $3\pi r^2$ The curved surface area a hemisphere = $2\pi r^2$ where $r$ is the radius of the hemisphere. Given that the diameter of the hemisphere is 4 cm, the radius $r$ is 2 cm. The
Question : Rice is now being sold at INR 29 per kg. During the last month, its cost was INR 25 per kg. By how much percentage should a family reduce its consumption, to keep the expenditure the same as before? (correct to the nearest integer)
Option 1: 14%
Option 2: 13%
Option 3: 15%
Option 4: 12%
Correct Answer: 14%
Solution : New selling price = INR 29 per kg Old selling price = INR 25 per kg Let the expenditure be 100 kg. So, last months expenditure = 25 × 100 This months expenditure $=\frac{25 × 100}{29}=86.21$ kg So, the Reduction percentage $=\frac{100-86.21}{100}×100=13.79 \approx14$% Hence, the
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".
The thief did not know that there was a dog laying under the table.
(1) that there was a dog
(2) laying under the table.
(3) The thief did not know
(4) No Error
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 2
Solution : The correct choice is the second option.
Explanation: The error lies in the use of "laying". Lay is a transitive verb, and it requires an object to act upon, whereas lie is an intransitive verb, describing the flat position of an object or a
Question : Direction: The pie chart given below shows the percentage distribution of annual expenditure on various items of a company. The annual expenditure of the company is Rs. 72 crore.
The total amount spent on raw materials is 50% of the total amount spent on interest. If the ratio of the amount of expenditure on rent and the raw materials is 1 : 2 respectively, then what will be the amount spent on rent annually?
Option 1: Rs. 2,80,00,000
Option 2: Rs. 3,60,00,000
Option 3: Rs. 4,00,00,000
Option 4: Rs. 3,20,00,000
Correct Answer: Rs. 3,60,00,000
Solution : Amount spent on interest = $\frac{20}{100}$ × 72,00,00,000 = Rs. 144000000 Amount spent on raw material = 50% of interest = $\frac{50}{100}$ × 14,40,00,000 = Rs. 7,20,00,000 The ratio of the amount of expenditure on rent and raw materials is 1 : 2. Thus,
Question : The frequency of ultrasound waves is typically:
Option 1: above 20 kHz
Option 2: above 20,000 kHz
Option 3: below 20 kHz
Option 4: below 2 kHz
Correct Answer: above 20 kHz
Solution : The correct option is above 20 kHz.
The number of full cycles or oscillations that an ultrasonic wave undergoes in one second is referred to as its frequency. The most common unit of measurement is the hertz (Hz), where one hertz equals
Question : Tin Bigha Corridor links
Option 1: India and Pakistan
Option 2: India and China
Option 3: Bangladesh and Pakistan
Option 4: Bangladesh and India
Correct Answer: Bangladesh and India
Solution : The correct option is Bangladesh and India.
The Tin Bigha Corridor is a strip of land belonging to India on the West Bengal-Bangladesh border. In September 2011, it was leased to Bangladesh. This was done to enable Bangladesh to access the Dahagram-Angarpota Bangladeshi
Question : Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select ‘No substitution required’. The secretary talks over the phone right now
Option 1: talked
Option 2: was talking
Option 3: No substitution required
Option 4: is talking
Correct Answer: is talking
Solution : The correct choice is the fourth option.
Explanation: This option is appropriate because it indicates an ongoing action in the present. The sentence describes the secretary's current activity, so the present continuous tense ("is talking") fits the context.
Therefore, the correct sentence would be:
Question : Directions: In a certain code language, CARD is coded as 3597, and DOGS is coded as 8346. What is the code for D in the given code language?
Option 1: 4
Option 2: 9
Option 3: 5
Option 4: 3
Correct Answer: 3
Solution : Given: 1. CARD⇒3597 2. DOGS⇒8346
By comparing all the above–coded words, we find that – In sentences 1 and 2, D is a common letter and 3 is a common code.
So, D will be coded as 3. Hence, the fourth option is correct.
Question : Who is the author of the book "The Reluctant Family Man: Shiva in Everyday Life"?
Option 1: Mool Chand Sharma
Option 2: Rima Hooja
Option 3: Nilima Chitgopekar
Option 4: M. N. Dipak Nambiar
Correct Answer: Nilima Chitgopekar
Solution : The correct answer is Nilima Chitgopekar.
"The Reluctant Family Man: Shiva in Everyday Life" is written by Nilima Chitgopekar. In addition to writing numerous articles and essays on Hindu gods and related topics, she is the author of six books. Among her writings
Question : Select the most appropriate idiom from the following options that can substitute the underlined part of the given sentence.
Sometimes doing something that makes it impossible to return to the previous situation later strengthens you.
Option 1: Painting the town red
Option 2: Knocking your socks off
Option 3: Burning your bridges
Option 4: A red-letter day
Correct Answer: Burning your bridges
Solution : The correct choice is the third option.
Burning one's bridges means committing oneself to an irreversible course. This makes the third option, burning your bridges, the appropriate choice.
Therefore, the correct sentence is, "Sometimes burning your bridges strengthens you".
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