Staff Selection Commission Sub Inspector Exam
Question : What is the curved surface area (in cm2) of a cylinder having a radius of base as 14 cm and height as 10 cm?
Option 1: 440
Option 2: 880
Option 3: 220
Option 4: 1320
Correct Answer: 880
Solution : Given: r = 14 cm and h = 10 cm The curved surface area of a cylinder $= 2\pi rh$ The curved surface area of a cylinder $ = 2\times\frac{22}{7} \times 14 \times 10 = 880\, \text{cm}^2$ Hence, the correct answer is 880.
Question : Which Commission was appointed by the central government to examine issues related to Centre-State relations?
Option 1: Sarkaria Commission
Option 2: Mandal Commission
Option 3: Nanavati Commission
Option 4: Kothari Commission
Correct Answer: Sarkaria Commission
Solution : The correct answer is the Sarkaria Commission
The Indian central government established the Sarkaria Commission in June 1983. Its mandate was to draft amendments to the Indian Constitution while also analysing the nation's state-central power dynamics and their respective balances.
Question : $(\sqrt[3]{1000}+ \sqrt[3]{0.008}+\sqrt[3]{0.125})$ is equal to:
Option 1: $10.7$
Option 2: $9.97$
Option 3: $9.997$
Option 4: $9.9997$
Correct Answer: $10.7$
Solution : Given: $(\sqrt[3]{1000}+ \sqrt[3]{0.008}+\sqrt[3]{0.125})$ $\sqrt[3]{1000} = 10$ $\sqrt[3]{0.008} = 0.2$ $\sqrt[3]{0.125} = 0.5$ Putting these values, we get: $10 + 0.2 + 0.5 = 10.7$ Hence, the correct answer is $10.7$.
Question : Directions: The average age of 19 boys in a class is 21 years. If the teacher's age is included, the average increases to 22 years. What is the teacher's age?
Option 1: 39 years
Option 2: 41 years
Option 3: 40 years
Option 4: 44 years
Correct Answer: 41 years
Solution : Given: The average age of 19 boys in a class is 21 years.
Average⇒(Sum of ages of 19 boys) ÷ 19 = 21 So, the sum of the ages of 19 boys = 19 × 21 = 399
The average age of 19 boys
Question : Directions: In the given figure, which letter represents carnivorous plants that are not green?
Option 1: d
Option 2: g
Option 3: e
Option 4: f
Correct Answer: d
Solution : The region that represents carnivorous plants is d and g. But we need to find out those carnivorous plants that are not green. This means that the g region will not be considered. The shaded region is common to both carnivorous and plants, but uncommon
Question : Directions: In the given question, there are four given figures, out of which three are similar in some manner and one is not like the others. Select the figure which is the odd one out.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : The logic followed in the given options is as follows –
Here, all figures have the same number of squares, and the same number of horizontal and vertical lines, but only in the third option, a slant line is present in the square.
Hence, the third
Question : Directions: Select the option that is related to the fifth letter cluster in the same way as the second letter cluster is related to the first letter cluster and the fourth letter cluster is related to the third letter cluster. CREATION : ETGCVKQP :: UNIVERSE : WPKXGTUG :: PLANET : ?
Option 1: RNCPGV
Option 2: RCPNGV
Option 3: RPGVNC
Option 4: RPCGVN
Correct Answer: RNCPGV
Solution : Given: CREATION : ETGCVKQP :: UNIVERSE : WPKXGTUG :: PLANET : ?
Like, CREATION : ETGCVKQP – C + 2 = E; R + 2 = T; E + 2 = G; A + 2 = C; T + 2 = V; I + 2
Question : Pipes A and B can fill a tank in 16 hours and 24 hours, respectively, whereas pipe C can empty the full tank in 40 hours. All three pipes are opened together, but pipe C is closed after 10 hours. After how many hours will the remaining part of the tank be filled?
Option 1: $2 \frac{1}{2}$
Option 2: $2$
Option 3: $5 \frac{1}{2}$
Option 4: $5$
Correct Answer: $2$
Solution : Total Work = Least Common Multiple (LCM) of 16, 24, and 40 = 240 Let the total capacity of the tank be 240 units Efficiency of A = $\frac{240}{16}$ = 15 units Efficiency of B = $\frac{240}{24}$ = 10 units Efficiency of C = $\frac{240}{-40}$
Question : Directions: A cube is made by folding the given sheet. In the cube so formed, which letter will be on the face opposing to the one showing P?
Option 1: H
Option 2: L
Option 3: K
Option 4: A
Correct Answer: H
Solution : In the 3D view of dice, 1. Each face out of the three faces in the 3D view should be from all the pairs. 2. Two opposite faces cannot appear adjacently in the 3D view of a folded cube figure. So, the opposite pairs of
Question : Directions: Three different positions of the same dice are shown, the six faces of which are numbered from 1 to 6. Select the number that will be on the face opposite to the face showing 1.
Option 1: 3
Option 2: 2
Option 3: 5
Option 4: 4
Correct Answer: 4
Solution : According to the dice rule if two or three positions of the same dice are given with two common faces but in different orientations then out of those two common faces the faces that are not common are opposite to each other.
Therefore, the opposite
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