Staff Selection Commission Sub Inspector Exam
Question : Directions: In the following question, some parts of the sentence may have some errors. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select "No Error".
My father lives on Delhi.
(1) in Delhi
(2) at Delhi
(3) inside Delhi
(4) No Error
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (1)
Solution : The correct choice is the first option.
When indicating the place where someone lives, we use "in" before the name of the city.
Therefore, the correct sentence is: "My father lives in Delhi."
Question : Directions: Two persons A and B get the same salary. Their basic pay is different. The allowances are 65% and 80% of the basic pay respectively. What is the ratio of the basic pay?
Option 1: 17 : 15
Option 2: 7 : 5
Option 3: 11 : 10
Option 4: 12 : 11
Correct Answer: 12 : 11
Solution : Given: Two persons A and B get the same salary. Their basic pay is different. The allowances are 65% and 80% of the basic pay respectively.
Let's consider that A's basic pay is X and B's is Y. As per the given details,
Question : The mouth of which of the following rivers lies to the north of the Tropic of Cancer?
Option 1: Godavari
Option 2: Krishna
Option 3: Indus
Option 4: Mahanadi
Correct Answer: Indus
Solution : The correct option is Indus.
The mouth of the Indus River lies in the south of the Tropic of Cancer. The Indus River flows through Pakistan and empties into the Arabian Sea, in the south of the Tropic of Cancer. The Indus River is
Question : Vibration of which among the following produces only odd harmonics?
Option 1: A vibrating rod fixed at two ends
Option 2: A vibrating string fixed at two ends
Option 3: An air column in a closed organ pipe
Option 4: An air column in an open organ pipe
Correct Answer: An air column in a closed organ pipe
Solution : The correct answer is An air column in a closed organ pipe.
Physics demonstrates that in the situation of an air column vibrating in a pipe closed at one end, the only harmonics present as overtones are odd.
Question : How big are red blood cells in diameter?
Option 1: 7.5 μm
Option 2: 2.0 μm
Option 3: 4.0 μm
Option 4: 40.0 μm
Correct Answer: 7.5 μm
Solution : The correct answer is 7.5 μm.
The red blood cells are approximately 7.5 μm in diameter. Red blood cells are formed in bone marrow, and they typically have a life of around 120 days. The primary function of RBCs is to carry oxygen from
Question : ______ was chosen as India's official entry in the 'Best International Feature Film' category at the Oscars 2020.
Option 1: Baba
Option 2: Gully Boy
Option 3: Andhadhun
Option 4: Anandi Gopal
Correct Answer: Gully Boy
Solution : The correct answer is Gully Boy.
Gully Boy was chosen as India's official entry in the Best International Feature Film category at the Oscars 2020. Ranveer Singh is the main actor in Gully Boy, Alia Bhatt is the main actress, and the movie is
Question : The following table gives a quantity of various items used by a restaurant during four months of the year (In kg.)
The quantity of E used in March is what percentage of the total quantity of food items used in May?
Option 1: 20%
Option 2: 14%
Option 3: 12.3%
Option 4: 17.8%
Correct Answer: 20%
Solution : The quantity of E used in March = 308 The total quantity of food items used in May = 270 + 390 + 280 + 250 + 350 = 1540 $\therefore$ Required percentage = $\frac{\text{The quantity of E used in March}}{\text{The total quantity of food
Question : Study the given graph and answer the question that follows. The following graph shows the distribution of the cost percentage of different items.
If a person purchased all the items for INR 3,00,000, then the cost of a TV is less than that of a laptop by:
Option 1: INR 40,000
Option 2: INR 55,000
Option 3: INR 50,000
Option 4: INR 45,000
Correct Answer: INR 45,000
Solution : According to the question Cost of TV is 15% ie. 0.15 × 300000 = 45000 The cost of Laptop is 30% i.e. 0.30 × 300000 = 90000 Now, Difference = Cost of laptop – Cost of TV = 90000 – 45000 = 45000 Hence,
Question : A chord of a circle is equal to its radius of length 9 cm. Find the angle subtended by it in the major segment.
Option 1: $90^\circ$
Option 2: $60^\circ$
Option 3: $30^\circ$
Option 4: $120^\circ$
Correct Answer: $30^\circ$
Solution : The length of the chord(AB) = radius(OB) = 9 cm When the length of the chord and the radius are equal, the triangle formed is equilateral. The angles of an equilateral triangle are $60^\circ$ $\therefore$ The angle subtended in the major segment is half of
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