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Prelims

UPSC Prelims Questions

Practice UPSC Prelims MCQs by subject and year. Free questions with explanations for focused revision.

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  2. /Prelims Questions
Q.4339·Miscellaneous·2021·Easy

Each item in this question has a sentence with three underlined parts labelled (a), (b) and (c). Read each sentence to find out whether there is any error in any underlined part. Indicate your response in the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, your response should be indicated as (d). (a) The pollution level is very (b) high in our city, and (c) becomes a health hazard. (d) No error

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Q.4340·Miscellaneous·2021·Easy

Each item in this question has a sentence with three underlined parts labelled (a), (b) and (c). Read each sentence to find out whether there is any error in any underlined part. Indicate your response in the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, your response should be indicated as (d). (a) India is a country of linguistic (b) and cultural diversity with (c) multiple ethnic and social groups. (d) No error

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Q.4341·Miscellaneous·2021·Easy

Each item in this question has a sentence with three underlined parts labelled (a), (b) and (c). Read each sentence to find out whether there is any error in any underlined part. Indicate your response in the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, your response should be indicated as (d). (a) Why does the lapse rate (b) effect the tendency (c) of air to rise ? (d) No error

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Q.4342·Miscellaneous·2021·Easy

What is the value of the following? tan 31° tan 33° tan 35° ... tan 59°

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Q.4343·Miscellaneous·2021·Easy

Each item in this question has a sentence with three underlined parts labelled (a), (b) and (c). Read each sentence to find out whether there is any error in any underlined part. Indicate your response in the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, your response should be indicated as (d). (a) The thorax is the upper part (b) of your body from the neck down (c) to the bottom of the ribs and diaphragm. (d) No error

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Q.4344·Miscellaneous·2021·Easy

Each item in this question has a sentence with three underlined parts labelled (a), (b) and (c). Read each sentence to find out whether there is any error in any underlined part. Indicate your response in the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, your response should be indicated as (d). (a) The practical uses of astrology (b) have seldom been seriously (c) studied outside India. (d) No erro

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Q.4345·Miscellaneous·2021·Easy

Each item in this question has a sentence with three underlined parts labelled (a), (b) and (c). Read each sentence to find out whether there is any error in any underlined part. Indicate your response in the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, your response should be indicated as (d). (a) She collected (b) some armful of medicines and (c) poured them down a drain. (d) No error

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Q.4346·Miscellaneous·2021·Easy

How many matrices of different orders are possible with elements comprising all prime numbers less than 30?

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Q.4347·Miscellaneous·2021·Easy

Each item in this question has a sentence with three underlined parts labelled (a), (b) and (c). Read each sentence to find out whether there is any error in any underlined part. Indicate your response in the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, your response should be indicated as (d). (a) In many countries, the United Nations (b) or other internationally organised (c) peacekeeping forces are trying to keep the peace. (d) No error

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Q.4348·Miscellaneous·2021·Easy

Let A = | p q | | r s | where p, q, r and s are any four different prime numbers less than 20. What is the maximum value of the determinant?

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Q.4349·Miscellaneous·2021·Easy

If A and B are square matrices of order 2 such that det(AB) = det(BA), then which one of the following is correct?

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Q.4350·Miscellaneous·2021·Easy

If 1 x x+1 f(x) = ──────────────────────────────── 2x x(x - 1) x(x + 1) 3(x - 1)(x - 2) x(x + 1)(x - 1) then what is f(-1) + f(0) + f(1) equal to?

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Q.4351·Miscellaneous·2021·Easy

A chord subtends an angle 120° at the centre of a unit circle. What is the length of the chord?

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Q.4352·Miscellaneous·2021·Easy

What is the interior angle of a regular octagon of side length 2 cm?

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Q.4353·Miscellaneous·2021·Easy

Each item in this question has a sentence with three underlined parts labelled (a), (b) and (c). Read each sentence to find out whether there is any error in any underlined part. Indicate your response in the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, your response should be indicated as (d). (a) Early cities rely on food and water (b) from the surrounding countryside, (c) but today cities often depend on distant sources. (d) No error

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Q.4354·Miscellaneous·2021·Easy

Each item in this question has a sentence with three underlined parts labelled (a), (b) and (c). Read each sentence to find out whether there is any error in any underlined part. Indicate your response in the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, your response should be indicated as (d). (a) Climate change, whether it is (b) natural or human-induced, (c) is stressful for the people. (d) No error

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Q.4355·Miscellaneous·2021·Easy

In this question given below are some idioms/phrases followed by four alternative meanings for each. Choose the most appropriate answer from among the options (a), (b), (c) or (d). Once-over

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Q.4356·Miscellaneous·2021·Easy

In this question given below are some idioms/phrases followed by four alternative meanings for each. Choose the most appropriate answer from among the options (a), (b), (c) or (d). A bag of bones

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