Staff Selection Commission Sub Inspector Exam
Question : Which of the following are the main components of stainless steel?
Option 1: Iron and carbon
Option 2: Silver
Option 3: Iron, chromium and nickel
Option 4: Iron and nickel
Correct Answer: Iron, chromium and nickel
Solution : The correct option is Iron, chromium and nickel.
An iron alloy with high corrosion and rust resistance is known as stainless steel. To get the desired qualities, it may also contain other elements, such as carbon; however, at least 10.5% of
Question : Select the most appropriate meaning of the given idiom. Bite the bullet
Option 1: Decide to do what is good
Option 2: To bite something very hard
Option 3: Decide to do the inevitable, which you were avoiding
Option 4: Decide to take the easier way out
Correct Answer: Decide to do the inevitable, which you were avoiding
Solution : The third option is the correct answer.
The idiom "bite the bullet" means to endure a painful or difficult situation with courage and resilience. It often implies facing a challenging circumstance or unpleasant task with bravery and
Question : In a 500-metre race, the ratio of speeds of two runners P and Q is $3:5$. P has a start of 200 metres, then the distance between P and Q at the finish of the race is:
Option 1: P wins by 100 metres
Option 2: Both reach at the same time
Option 3: Q wins by 100 metres
Option 4: Q wins by 50 metres
Correct Answer: Both reach at the same time
Solution : Given: In a 500-metre race, the ratio of speeds of two runners P and Q is $3:5$ and P has a start of 200 metres. Distance to be covered by A = (500 – 200) = 300 metres Time taken
Question : There are 3 taps, A, B, and C, in a tank. These can fill the tank in 10 h, 20 h, and 25 h, respectively. At first, all three taps are opened simultaneously. After 2 h, tap C is closed, and taps A and B keep running. After 4 h, tap B is also closed. The remaining tank is filled by tap A alone. Find the percentage of work done by tap A itself.
Option 1: 75%
Option 2: 52%
Option 3: 72%
Option 4: 32%
Correct Answer: 72%
Solution : LCM of 10, 20 and 25 is 100 Let the capacity of the tank be 100 units Efficiency of A = $\frac{100}{10}=10$ Efficiency of B = $\frac{100}{20}=5$ Efficiency of C = $\frac{100}{25}=4$ After 2 h, tap C is closed, and taps A and B keep
Question : Directions: Select the letter cluster that can replace the question mark (?) in the given letter cluster series. PZX, QAY, SCA, VFD, ?
Option 1: ZKH
Option 2: ZJH
Option 3: AJG
Option 4: YKH
Correct Answer: ZJH
Solution : Given: PZX, QAY, SCA, VFD, ?
In the above-given series, add the consecutive natural numbers to the place value of the letters of each term to get the next term in the series. PZX→P + 1 = Q; Z + 1 = A; X +
Question : What is the number of hydrogen atoms in a molecule of calcium bicarbonate?
Option 1: 0
Option 2: 1
Option 3: 2
Option 4: 4
Correct Answer: 2
Solution : The correct answer is 2.
Another name for calcium bicarbonate is calcium hydrogen carbonate. The chemical formula for it is Ca(HCO3)2. It is clear from the preceding formula that calcium bicarbonate has two hydrogen atoms.
Question : Find the area of a rhombus if the perimeter of the rhombus is 52 cm, and one of its diagonals is 10 cm long.
Option 1: 120 cm2
Option 2: 164 cm2
Option 3: 160 cm2
Option 4: 144 cm2
Correct Answer: 120 cm2
Solution : The perimeter of a rhombus = 52 cm One diagonal = 10 cm Let the length of the other diagonal be $x$ cm. Perimeter = 4 × side 52 = 4 × side Side = $\frac{52}{4} = 13$ The diagonals of a rhombus
Question : When was the Indian Meteorological Department which collects data on temperature, rainfall, wind, etc., and makes weather forecasts, established by the Government of India?
Option 1: 1879
Option 2: 1876
Option 3: 1875
Option 4: 1873
Correct Answer: 1875
Solution : The correct answer is 1875.
The Indian Meteorological Department was established in 1875, with its headquarters at Calcutta. The headquarters was shifted to Shimla in 1905, to Pune in 1928, and then to Delhi in 1944. IMD has expanded its infrastructure for meteorological observations,
Question : Directions: In the following question a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series. 27, 32, 30, 35, 33, ___
Option 1: 28
Option 2: 31
Option 3: 36
Option 4: 38
Correct Answer: 38
Solution : Given: 27, 32, 30, 35, 33, ___
Here, add 5 and subtract 2 alternately from the previous term to get the next term. 27 + 5 = 32; 32 – 2 = 30; 30 + 5 = 35; 35 – 2 = 33; 33 +
Question : Directions: Select the option that is related to the third number in the same way as the second number is related to the first number. 91 : 104 :: 161 : ?
Option 1: 184
Option 2: 235
Option 3: 344
Option 4: 237
Correct Answer: 184
Solution : Given: 91 : 104 :: 161 : ?
Like, 91 : 104 →91 ÷ 7 = 13; 104 ÷ 8 = 13 Similarly, for 161 : ?→161 ÷ 7 = 23; (?) ÷ 8 = 23 ⇒ (?) = 23 × 8 ⇒ (?) =
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