Staff Selection Commission Sub Inspector Exam
Question : Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are
Option 1: Boron and Cadmium
Option 2: Boron and Plutonium
Option 3: Cadmium and Uranium
Option 4: Uranium and Boron
Correct Answer: Boron and Cadmium
Solution : The correct answer is Boron and Cadmium.
Nuclear reactors make use of boron and cadmium as materials that absorb neutrons in control rods, which help to regulate the fission reaction rate. Boron-10 and cadmium-113 are particularly efficient at absorbing neutrons and assist in
Question : Directions: In the following question, out of the four alternatives, select the alternative that will improve the bracketed part of the sentence. In case no improvement is needed, select "No Improvement".
Before I met Sakshi, I (had) a bad opinion of her.
(1) have had
(2) had had
(3) did have
(4) No Improvement
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 4
Solution : The correct choice is the fourth option.
The given sentence is structured properly. The sentence conveys the idea that the speaker did not have a pleasant opinion of Sakshi before meeting her.
Therefore, the sentence requires no improvement.
Question : Directions: Four letter clusters have been given out of which three are alike in some manner, while one is different. Choose the odd one.
Option 1: NOQST
Option 2: EGIKM
Option 3: BDFHJ
Option 4: QSUWY
Correct Answer: NOQST
Solution : Let's check the options – First option: NOQST→N + 1 = O; O + 2 = Q; Q + 2 = S; S + 1 = T Second option: EGIKM→E + 2 = G; G + 2 = I; I + 2 = K; K
Question : the Ahmedabad Satyagraha of Gandhi was directed against
Option 1: British mill owners and government officials .
Option 2: Indian mill owners and non government officials.
Option 3: British non government officials.
Option 4: Indian government official .
Correct Answer: Indian mill owners and non government officials.
Solution : Correct Answer is Indian mill owners and non-governmental officials.
A significant uprising in the Indian Independence movement was the Satyagraha in the Gujarati city of Ahmedabad. It was the second Satyagraha movement after the Champaran Satyagraha, which supported cotton
Question : Ram bought a bike for Rs. 60,000. He paid Rs. 10,000 cash down and the rest at the end of 2 years at 15% simple interest. How much more did he pay as simple interest?
Option 1: Rs. 15,000
Option 2: Rs. 25,000
Option 3: Rs. 35,000
Option 4: Rs. 50,000
Correct Answer: Rs. 15,000
Solution : Principal sum = Rs. (60000 – 10000) = Rs. 50000 Rate of interest = 15%, time period = 2 years Simple Interest =$\frac{\text{Principal×Rate×Time}}{100}$ = $\frac{50000×15×2}{100}$ = 500 × 30 = Rs. 15,000 Hence, the correct answer is Rs. 15,000.
Question : The value of $\frac{5-[2+3(2-2 \times 2+5)-5] \div 5}{4 \times 4 \div 4 \text { of }(4+4 \div 4 \text { of } 4)}$ is:
Option 1: $3 \frac{3}{16}$
Option 2: $4 \frac{3}{80}$
Option 3: $\frac{2}{5}$
Option 4: $7 \frac{3}{5}$
Correct Answer: $4 \frac{3}{80}$
Solution : $\frac{5-[2+3(2-2 \times 2+5)-5] \div 5}{4 \times 4 \div 4 \text { of }(4+4 \div 4 \text { of } 4)}$ $=\frac{5-[2+3(2-2 \times 2+5)-5] \div 5}{4 \times 4 \div 4 \times(4+4 \div 4 \times4)}$ $=\frac{5-[2+3(3)-5] \div 5}{4 \times 4 \div 4 \times(4+\frac{4}{16})}$ $=\frac{5-[2+9-5] \div 5}{4
Question : Directions: In the following question, a sentence is given with a blank that is to be filled in with an appropriate word. Four alternatives are suggested; choose the correct alternative out of them as your answer.
The examination will commence _____ next week.
Option 1: since
Option 2: from
Option 3: on
Option 4: with
Correct Answer: from
Solution : The second option is the correct answer.
From is the correct preposition that indicates the starting point of something, and it fits perfectly in the sentence, conveying the meaning that the examination starts from the following week.
Therefore, the complete sentence is: The examination will
Question : Which of the following Articles of the Constitution of India deals with the manner of election of the President?
Option 1: Article 51
Option 2: Article 61
Option 3: Article 55
Option 4: Article 65
Correct Answer: Article 55
Solution : The correct answer is Article 55
The process to elect the President is outlined in Article 55 of the Constitution. A minimum of fifty electors must support a presidential nomination as proposers and an additional fifty electors as seconders. Depending on various electoral formulas,
Question : The value of $1-3 \div 6$ of $2+\left(4 \div 4\right.$ of $\left.\frac{1}{4}\right) \div 8+\left(4 \times 8 \div \frac{1}{4}\right) \times \frac{1}{8}$ is:
Option 1: $\frac{69}{4}$
Option 2: $-\frac{69}{4}$
Option 3: $\frac{7}{4}$
Option 4: $-\frac{7}{4}$
Correct Answer: $\frac{69}{4}$
Solution : Given: $1-3 \div 6$ of $2+\left(4 \div 4\right.$ of $\left.\frac{1}{4}\right) \div 8+\left(4 \times 8 \div \frac{1}{4}\right) \times \frac{1}{8}$ = $1-3 \div 12+(4 \div 1) \div 8+\left(4 \times 8 \times4\right) \times \frac{1}{8}$ = $1-\frac{3}{12}+\frac{4}{8}+\left(4 \times 8 \times4\right) \times \frac{1}{8}$ = $1-\frac{1}{4}+\frac{1}{2}+16$ = $\frac{4-1+2+64}{4}$ = $\frac{69}{4}$ Hence,
Question : Directions: If A denotes +, B denotes ×, C denotes −, and D denotes ÷, then what will be the value of the following expression? 2 B 12 D 4 A 16 C 7 = ?
Option 1: 15
Option 2: 12
Option 3: 13
Option 4: 14
Correct Answer: 15
Solution : Given: 2 B 12 D 4 A 16 C 7 = ?
On interchanging the signs given in the equation, the equation becomes – = 2 × 12 ÷ 4 + 16 – 7 = 2 × 3 + 16 – 7 = 6 +
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