Staff Selection Commission Sub Inspector Exam
Question : Train X running at 74 km/hr crosses another Train Y running at 52 km/hr in the opposite direction in 12 seconds. If the length of Train Y is two-thirds that of Train X, then what is the length of Train X (in m)?
Option 1: 210
Option 2: 200
Option 3: 252
Option 4: 168
Correct Answer: 252
Solution : Speed of train X = 74 km/hr Speed of train Y = 52 km/hr Relative speed = 74 + 52 = 126 km/hr = 126 × $\frac{5}{18}$ = 35 m/s Time = 12 s Total length = 35 × 12 = 420 m So, the
Question : The climate of Assam can be described as:
Option 1: Tropical monsoon rainforest climate
Option 2: Tropical dry climate
Option 3: Sub-tropical humid climate
Option 4: Mountain climate
Correct Answer: Tropical monsoon rainforest climate
Solution : The correct option is Tropical monsoon rainforest climate
The climate of Assam, a state in northeastern India, is characterized by its tropical monsoon climate. The region experiences distinct seasons, including a hot and rainy season, a cool and dry winter, and a
Question : Directions: If each of the letters of the English alphabet is assigned an odd numerical value beginning with A = 1, B = 3 and so on, what will be the total value of the letters of the word RADICAL?
Option 1: 88
Option 2: 89
Option 3: 90
Option 4: 99
Correct Answer: 89
Solution : Given: A = 1, B = 3, and so on.
According to the question, the place value of each letter is as follows – R→35; A→1; D→7; I→17; C→5; A→1; L → 23 RADICAL = 35 + 1 + 7 + 17 + 5 +
Question : Directions: Some questions are solved based on a certain system. Identify that operation and find the correct answer from the four responses. a = 14(290)15; b = 16(330)17; c = 18(?)19
Option 1: 300
Option 2: 270
Option 3: 170
Option 4: 370
Correct Answer: 370
Solution : Given: a = 14(290)15; b = 16(330)17; c = 18(?)19
Subtract the square of the first number from the square of the third number and multiply the resultant by 10, to get the middle number – Like, a = 14(290)15→(152 – 142)
Question : When was the National Interim Government of India formed under Jawaharlal Nehru?
Option 1: 2 September 1946
Option 2: 2 September 1947
Option 3: 20 September 1946
Option 4: 2 September 1945
Correct Answer: 2 September 1946
Solution : The correct answer is 2 September 1946.
The Interim Government of India was established on 2 September 1946 to supervise the nation's conversion from a British colony to an independent republic. It ended on 15 August 1947, the day India gained independence.
Question : Which of the following is an indirect tax?
Option 1: Death duty
Option 2: Interest tax
Option 3: Goods and services tax
Option 4: Capital gains tax
Correct Answer: Goods and services tax
Solution : The correct answer is the Goods and services tax.
Goods and services tax (GST) is an indirect tax. It is a consumption-based tax that is levied on the supply of goods and services. Death duty, interest tax and capital gains tax are
Question : Small Pox is caused by:
Option 1: rubella virus
Option 2: variola virus
Option 3: varicella
Option 4: myxovirus
Correct Answer: variola virus
Solution : The correct option is the variola virus.
Smallpox is caused by the variola virus, which belongs to the genus Orthopoxvirus. It is a highly contagious and often severe disease that has been eradicated globally through vaccination efforts. The last naturally occurring case of
Question : Which among the following is not a logical operator in Boolean Algebra laws?
Option 1: AND
Option 2: OR
Option 3: NOT
Option 4: NAND
Correct Answer: NAND
Solution : The correct answer is NAND.
Boolean algebra is a way of formally specifying or describing a particular situation or procedure. It is a part of binary logic that uses algebraic expressions to describe the processing of binary variables through logic operations.
Question : Directions: Find the missing number from the given responses in the following question.
Option 1: 72
Option 2: 720
Option 3: 7200
Option 4: 38
Correct Answer: 720
Solution : In each figure, the number in the middle of the figure is the product of the numbers at the corners.
In the first figure→4 × 2 × 3 × 3 = 72 In the second figure→9 × 4 × 2 × 10 = 720 Similarly,
Question : The average marks of a class of 35 children is 35. The marks of one of the students, who got 35, were incorrectly entered as 65. What is the average of the class?
Option 1: 33.76
Option 2: 34.14
Option 3: 35.24
Option 4: 36.50
Correct Answer: 34.14
Solution : Difference of incorrect marks = – 65 + 35 = – 30 So, change in average = – $\frac{30}{35}$ = – 0.86 Correct average = 35 – 0.86 = 34.14 Hence, the correct answer is 34.14.
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