Staff Selection Commission Multi Tasking Staff Exam
Question : 600 - A = 65 % of 200. What is the value of A?
Option 1: 450
Option 2: 470
Option 3: 490
Option 4: 460
Correct Answer: 470
Solution : 600 – A = 65% of 200 600 – A = $\frac{65\times200}{100}$ ⇒ 600 – A = 130 ⇒ A = 600 – 130 $\therefore$ A is equal to 470 Hence, the correct answer is 470.
Question : In a mixture, water and milk are in the ratio of 2 : 3. What is the amount of water that is to be added to 20 kg of this mixture to make the ratio of water and milk in the new mixture 1 : 1?
Option 1: 3 kg
Option 2: 2 kg
Option 3: 4 kg
Option 4: 5 kg
Correct Answer: 4 kg
Solution : In the original mixture, the ratio of water to milk is 2 : 3. This means that out of every 5 parts of the mixture, 2 parts are water and 3 parts are milk. In a 20 kg mixture, the amount of water is
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".
Most countries in the world (1) / is for (2) / peace (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.
Most countries is a plural noun, and hence the verb must also be plural to meet the subject-verb rules. The verb is should be changed to are.
Therefore, the correct sentence is: "Most countries in
Question : Provisions related to the Municipalities are mentioned under which part of the Indian Constitution?
Option 1: Part IXA
Option 2: Part VII
Option 3: Part V
Option 4: Part XII
Correct Answer: Part IXA
Solution : The correct option is Part IXA.
The provisions related to Municipalities are mentioned under Part IXA of the Indian Constitution. It outlines the constitutional framework for urban local governance, empowering municipalities to ensure effective administration and development at the grassroots level.
Question : An alloy contains 30 percent aluminium. What quantity of alloy will have 300 grams of aluminium?
Option 1: 0.8 kg
Option 2: 1 kg
Option 3: 1.2 kg
Option 4: 0.6 kg
Correct Answer: 1 kg
Solution : Given: Quantity of aluminium = 300 grams Aluminium content = 30% Let the weight of the alloy be $x$. $\therefore$ Aluminium content = quantity of aluminium ⇒ $\frac{30x}{100}=300$ ⇒ $x=1000$ grams = $1$ kg Hence, the correct answer is 1 kg.
Question : The average of prime numbers between 1 and 20 is:
Option 1: $9$
Option 2: $9\frac{5}{8}$
Option 3: $10\frac{1}{8}$
Option 4: $8$
Correct Answer: $9\frac{5}{8}$
Solution : Prime numbers between 1 to 20 = 2, 3, 5, 7, 11, 13, 17, 19 Their sum = 2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 = 77 Total numbers = 8 $\therefore$ Average = $\frac{77}{8}=9\frac{5}{8}$ Hence, the
Question : If the heights of two cylinders are in the ratio of 7 : 9 and their diameters are in the ratio of 6 : 7, then what is the ratio of the volumes of the cylinders?
Option 1: 6 : 7
Option 2: 7 : 9
Option 3: 5 : 9
Option 4: 4 : 7
Correct Answer: 4 : 7
Solution : The ratio of heights of two cylinders = 7 : 9 Ratio of diameters = ratio of radii = 6 : 7 Ratio of volumes of two cylinders = $\frac{\frac{4}{3}\pi r_1^2h_1}{\frac{4}{3}\pi r_2^2h_2}$ = $\frac{r_1^2h_1}{r_2^2h_2}$ = $\frac{6^2×7}{7^2×9}$ = $\frac{4}{7}$ = 4 : 7 Hence,
Question : Which country is the leading producer of coffee in the world?
Option 1: USA
Option 2: Brazil
Option 3: China
Option 4: India
Correct Answer: Brazil
Solution : The correct answer is Brazil.
The world's largest producer of coffee is Brazil. A remarkable 2,595,000 metric tonnes of coffee beans were produced in Brazil in 2016. Brazil has been the world's top producer of coffee beans for more than 150 years.
Question : Select the most appropriate option to fill in the blank.
Your district is exposed to ______ and also to destructive floods.
Option 1: draught
Option 2: dot
Option 3: drought
Option 4: draft
Correct Answer: drought
Solution : The third option is correct.
The meanings of the words are:
A dot means a small round mark, like a full stop.
Drought means a prolonged period of dry weather.
A draft is a piece of writing, etc., that will probably be changed and improved.
Question : The monthly income of a person is INR 15,000. He saves 20% of his income. If his income increases by 10% and his nominal savings remain the same, then what will be his new expenditure?
Option 1: INR 13,000
Option 2: INR 14,500
Option 3: INR 13,500
Option 4: INR 14,000
Correct Answer: INR 13,500
Solution : The monthly income of a person = INR 15000 Savings = $\frac{20}{100}\times15000=3000$ Expenditure = Income – saving = 15000 – 3000 = 12000 When income increases by 10% = $\frac{110}{100}\times15000=16500$ Savings remain the same, so new expenditure = 16500 – 3000 = 13500 Hence,
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