Staff Selection Commission Multi Tasking Staff Exam
Question : Milkiness observed on passing of carbon dioxide through lime water is due to the formation of:
Option 1: calcium hydroxide
Option 2: calcium bicarbonate
Option 3: calcium carbonate
Option 4: calcium chloride
Correct Answer: calcium carbonate
Solution : The correct answer is calcium carbonate.
Lime water is chemically known as calcium hydroxide, which turns milky when carbon dioxide is passed through it. When carbon dioxide reacts with calcium oxide, it leads to the formation of calcium carbonate. It is a milky
Question : The marks obtained by 5 children in a test are as follows: 12, 14, 8, 10, and 16. What are the average marks obtained by these 5 children?
Option 1: 11
Option 2: 14
Option 3: 10
Option 4: 12
Correct Answer: 12
Solution : The average of a set of numbers is calculated by adding all the numbers and then dividing by the count of the numbers. Average = $\frac{\text{Sum of all the observations}}{{\text{Total number of observations}}}$ Average = $\frac{12 + 14 + 8 + 10 + 16}{5}$ =
Question : How much air can be held in a closed cubical box, each of whose edges is 12 metres long?
Option 1: 1278 m3
Option 2: 1872 m3
Option 3: 1827 m3
Option 4: 1728 m3
Correct Answer: 1728 m3
Solution : Given: The edges of the cube are 12 metres long. The amount of air that can be held in a cubical box = The volume of the cube = (side)3 Now, the volume of the cube = (side)3 = 123
Question : Directions: Select the number from the given options that can replace the question mark (?) in the following series. 482, 239, 158, 131, 122, ?
Option 1: 121
Option 2: 119
Option 3: 117
Option 4: 113
Correct Answer: 119
Solution : Given: 482, 239, 158, 131, 122, ?
The pattern is as follows – 482 – 243 = 239 239 – (243 ÷ 3) = 239 – 81 = 158 158 – (81 ÷ 3) = 158 – 27 = 131 131 – (27 ÷ 3)
Question : X and Y can complete a piece of work in 12 and 60 days respectively. They are contracted to complete the work together for Rs. 24,000. What will be the share of X?
Option 1: Rs. 18,000
Option 2: Rs. 16,000
Option 3: Rs. 20,000
Option 4: Rs. 21,000
Correct Answer: Rs. 20,000
Solution : Given: X and Y can complete a piece of work in 12 and 60 days. The total work of X and Y is LCM of (12, 60) = 60 units 1 day's work by X $=\frac{60}{12}=5$ 1 day's work by Y $=\frac{60}{60}=1$ So, the
Question : Soilless agriculture is called _____.
Option 1: hydroponics
Option 2: shifting agriculture
Option 3: dry farming
Option 4: pastoral farming
Correct Answer: hydroponics
Solution : The correct answer is hydroponics.
Soilless agriculture is commonly referred to as hydroponics. Hydroponics is a method of growing plants without soil, where nutrient-rich water is used to deliver the essential minerals directly to the plant roots. This method allows for precise control over
Question : Parts of the given sentence have been given as options. One of them may contain an error. Select the part that contains the error from the given options. If you don't find any error, mark 'No error' as your answer.
If your kids sleep well, they are likely to behave better.
Option 1: No error
Option 2: to behave better
Option 3: they are likely
Option 4: if your kids sleep well
Correct Answer: No error
Solution : The correct choice is the first option.
All parts of the sentence are syntactically and semantically correct, and they form the proper structure of the sentence.
Therefore, the given sentence contains no errors.
Question : The following sentence has been divided into parts. One of them may contain an error. Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer. The panel will / investigate the allegations / owing to the concerned officials.
Option 1: investigate the allegations
Option 2: owing to the concerned officials
Option 3: The panel will
Option 4: No error
Correct Answer: owing to the concerned officials
Solution : The error lies in the second option.
Owing to means because of or due to. Using owing to in this context makes the sentence confusing and meaningless. The correct phrase to use is made by, which means produced or presented
Question : Which of the following titles was held by Samudragupta, a ruler of the Gupta Dynasty?
Option 1: Jahan Panah
Option 2: Sahib-e-Qiran
Option 3: Kaviraja
Option 4: Mahendraditya
Correct Answer: Kaviraja
Solution : The correct option is Kaviraja.
Samudragupta, a notable ruler of the Gupta Dynasty, was bestowed with the title "Kaviraja", meaning "King of Poets." This designation reflects his prowess in military conquests and his patronage of the arts and literature, showcasing a
Question : A saves 18% of his income. If his income increases by 41% and still saves the same amount. Find the percentage increase in his expenditure.
Option 1: 60%
Option 2: 35%
Option 3: 50%
Option 4: 40%
Correct Answer: 50%
Solution : Given, A saves 18% of his income. His income increases by 41%. Let the initial income be 100. Initial savings = 18 and initial expenditure = 100 – 18 = 82 New income = 100 + 41% of 100 = 141 New savings = 18
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