Staff Selection Commission Multi Tasking Staff Exam
Question : Select the most appropriate option to substitute the bracketed segment in the given sentence. If there is no need to substitute it, select 'No substitution required'. (In fact, climbing fern is spreading so rapidly that its) now the state's worst invasive weed.
Option 1: In fact, climbing fern is spreading so rapid that it's
Option 2: In fact, climbing fern is spread so rapidly that its
Option 3: In fact, climbing fern is spreading so rapidly that it's
Option 4: No substitution required
Correct Answer: In fact, climbing fern is spreading so rapidly that it's
Solution : The third option is correct.
The error in the original sentence is the use of its, which is a possessive pronoun. However, in this context, the sentence requires the contraction it's, which is a short
Question : How many litres of water can a hemispherical bowl of diameter 21 m hold? (1 m3 =1000 litres)
Option 1: 2100000 litres
Option 2: 2425500 litres
Option 3: 2322500 litres
Option 4: 2250500 litres
Correct Answer: 2425500 litres
Solution : Given: Diameter = 21 m Radius = $\frac{21}{2}$ m Volume of hemisphere = $\frac{2}{3}\pi r^3$ = $\frac{2}{3}\times\frac{22}{7} \times\frac{21}{2} \times\frac{21}{2} \times\frac{21}{2}$ = $2425.5$ m3 Given: 1 m3 =1000 litres So, 2425.5 m3 = 2425.5 × 1000 = 2425500 litres Hence, the correct
Question : GDP is an indicator of a country's economy. What does 'D' in GDP stand for?
Option 1: Development
Option 2: Domestic
Option 3: Dividend
Option 4: Deficit
Correct Answer: Domestic
Solution : The correct answer is Domestic.
GDP stands for gross domestic product. The total monetary or market value of all completed goods and services produced inside a nation's boundaries over a given period is known as the gross domestic product or GDP. It serves as
Question : The difference between the compound interest and the simple interest on a certain sum of money at 10% per annum for 2 years is INR 200. What is the sum of money, if in the case of compound interest, interest is compounded annually?
Option 1: INR 25,000
Option 2: INR 15,000
Option 3: INR 12,000
Option 4: INR 20,000
Correct Answer: INR 20,000
Solution : Given: The difference between the compound interest and the simple interest on a certain sum of money at 10% per annum for 2 years is INR 200. Use the formula, $CI–SI=P(\frac{R}{100})^T$ where $SI$, $CI$, $R$, $T$ are the simple interest, compound interest, rate, and
Question : What is the value of $\frac{156}{13} \times \frac{147}{24} \times \frac{8}{49}$ of $\frac{24}{144}?$
Option 1: 18
Option 2: 2
Option 3: 12
Option 4: 6
Correct Answer: 2
Solution : Given: $\frac{156}{13} \times \frac{147}{24} \times \frac{8}{49}$ of $\frac{24}{144}$ = $\frac{156×147×8×24}{13×24×49×144}$ = $\frac{12×3×8}{144}$ = 2 Hence, the correct answer is 2.
Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 59, 63, 72, 88, 113, ?
Option 1: 141
Option 2: 159
Option 3: 139
Option 4: 149
Correct Answer: 149
Solution : Given: 59, 63, 72, 88, 113, ?
Add the square of natural numbers to the previous number, to get the next number of the series – 59 + 22 = 59 + 4 = 63 63 + 32 = 63 + 9 =
Question : Out of a total of 9 books arranged in a particular order, the mean of the number of pages in the first 5 books is 430, the mean of the number of pages in the last 5 books is 380 and the mean of the number of pages in all the 9 books is 400. Find the number of pages in the fifth book.
Option 1: 450
Option 2: 420
Option 3: 430
Option 4: 440
Correct Answer: 450
Solution : Given: Mean of the number of pages in the first 5 books = 430 Total number of the pages of 5 books = 430 × 5 = 2150 The mean of the number of pages in the last 5 books = 380 Total number of
Question : Comprehension:
In the following passage, some of the words have been deleted. Read the passage carefully and select the correct answer for the given blank out of the four alternatives. Pumpkins contain high levels of (1) ______. These are molecules that fight harmful free radicals, a (2) ______ of unstable molecule that can sometimes (3) ______ damage to our cells, which may cause ageing and contribute to (4)______ diseases over time. While some antioxidants occur (5) ______ in our bodies, others we get from fruits and vegetables.
Select the most appropriate option to fill in the blank number 1.
Option 1: sentiments
Option 2: atoms
Option 3: antioxidants
Option 4: supplements
Correct Answer: antioxidants
Solution : The third option is the correct choice.
Antioxidants are molecules that combat harmful free radicals, which can cause damage to our cells and contribute to ageing and various diseases over time.
The meanings of the other options are as follows:
Question : Directions: In the following question, some parts of the sentence may have some errors. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select "No error".
One should (1) / look after (2) / their parents. (3) / No error (4)
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (3)
Solution : The error lies in the third part of the sentence.
The pronoun "their" should be replaced with "one's", as it is always used as the possessive form of one.
Therefore, the correct sentence is: One should look after one's parents.
Question : A alone can do $\frac{1}{4}$th part of the work in 12 days. B alone can do $\frac{1}{5}$th part of the work in 4 days. In how many days can A and B together can do the same work?
Option 1: $\frac{330}{13}$ days
Option 2: $\frac{240}{17}$ days
Option 3: $\frac{210}{4}$ days
Option 4: $\frac{255}{7}$ days
Correct Answer: $\frac{240}{17}$ days
Solution : Let the total work as 1 unit. Given that A alone can do $\frac{1}{4}$th part of the work in 12 days. The rate at which A works $= \frac{1}{12×4} = \frac{1}{48}$ And given that B alone can do $\frac{1}{5}$th part of the work in
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