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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.10531·Miscellaneous·2015·Easy

Given a function f(x) = -1 if x ≤ 0 f(x) = ax + b if 0 < x < 1 f(x) = 1 if x ≥ 1 where a, b are constants. The function is continuous everywhere. What is the value of a?

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Q.10532·Miscellaneous·2015·Easy

Which one among the following happens when a swing rises to a certain height from its rest position?

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Q.10533·Miscellaneous·2015·Easy

f(x) = -1 if x ≤ 0 f(x) = ax + b if 0 < x < 1 f(x) = 1 if x ≥ 1 where a, b are constants. The function is continuous everywhere. What is the value of b?

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Q.10534·Miscellaneous·2015·Easy

Consider the following functions: 1.f(x) = x³, x ∈ R 2.f(x) = sin x, 0 < x < 2π 3.f(x) = e^x, x ∈ R Which of the above functions have inverse defined on their ranges?

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Q.10535·Miscellaneous·2015·Easy

The integral ∫ dx / (a cos x + b sin x) is of the form (1/r) ln|tan((x + α)/2)| What is r equal to?

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Q.10536·Miscellaneous·2015·Easy

Which one among the following is used in making gunpowder?

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Q.10537·Miscellaneous·2015·Easy

At what value of x does f(x) attain minimum value? Consider the function f(x) = (x² − 1)/(x² + 1) where x ∈ R.

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Q.10538·Miscellaneous·2015·Easy

What is the minimum value of f(x)? Consider the function f(x) = (x² − 1)/(x² + 1) where x ∈ R.

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Q.10539·Miscellaneous·2015·Easy

The cleaning action of soap and detergent in water is due to the formation of

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Q.10540·Miscellaneous·2015·Easy

The chemical used as a fixer/developer in photography is

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Q.10541·Miscellaneous·2015·Easy

In this question, a number of sentences are given. The sentences are underlined in three separate parts and each one is labelled (a), (b), (c). Read each sentence to find out whether there is an error in any underlined part. No sentence has more than one error. When you find an error in any one of the underlined parts (a), (b) or (c), indicate your response on the Answer Sheet at the appropriate space. You may feel that there is no error in a sentence. In that case letter ‘(d)’ will signify a ‘No error’ response.

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Q.10542·Miscellaneous·2015·Easy

In this question, a number of sentences are given. The sentences are underlined in three separate parts and each one is labelled (a), (b), (c). Read each sentence to find out whether there is an error in any underlined part. No sentence has more than one error. When you find an error in any one of the underlined parts (a), (b) or (c), indicate your response on the Answer Sheet at the appropriate space. You may feel that there is no error in a sentence. In that case letter ‘(d)’ will signify a ‘No error’ response.

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Q.10543·Miscellaneous·2015·Easy

In this question, a number of sentences are given. The sentences are underlined in three separate parts and each one is labelled (a), (b), (c). Read each sentence to find out whether there is an error in any underlined part. No sentence has more than one error. When you find an error in any one of the underlined parts (a), (b) or (c), indicate your response on the Answer Sheet at the appropriate space. You may feel that there is no error in a sentence. In that case letter ‘(d)’ will signify a ‘No error’ response.

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Q.10544·Miscellaneous·2015·Easy

In this question, a number of sentences are given. The sentences are underlined in three separate parts and each one is labelled (a), (b), (c). Read each sentence to find out whether there is an error in any underlined part. No sentence has more than one error. When you find an error in any one of the underlined parts (a), (b) or (c), indicate your response on the Answer Sheet at the appropriate space. You may feel that there is no error in a sentence. In that case letter ‘(d)’ will signify a ‘No error’ response.

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Q.10545·Miscellaneous·2015·Easy

In this question, a number of sentences are given. The sentences are underlined in three separate parts and each one is labelled (a), (b), (c). Read each sentence to find out whether there is an error in any underlined part. No sentence has more than one error. When you find an error in any one of the underlined parts (a), (b) or (c), indicate your response on the Answer Sheet at the appropriate space. You may feel that there is no error in a sentence. In that case letter ‘(d)’ will signify a ‘No error’ response.

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Q.10546·Miscellaneous·2015·Easy

In this question, a number of sentences are given. The sentences are underlined in three separate parts and each one is labelled (a), (b), (c). Read each sentence to find out whether there is an error in any underlined part. No sentence has more than one error. When you find an error in any one of the underlined parts (a), (b) or (c), indicate your response on the Answer Sheet at the appropriate space. You may feel that there is no error in a sentence. In that case letter ‘(d)’ will signify a ‘No error’ response.

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Q.10547·Miscellaneous·2015·Easy

In this question, a number of sentences are given. The sentences are underlined in three separate parts and each one is labelled (a), (b), (c). Read each sentence to find out whether there is an error in any underlined part. No sentence has more than one error. When you find an error in any one of the underlined parts (a), (b) or (c), indicate your response on the Answer Sheet at the appropriate space. You may feel that there is no error in a sentence. In that case letter ‘(d)’ will signify a ‘No error’ response.

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Q.10548·Miscellaneous·2015·Easy

In this question, a number of sentences are given. The sentences are underlined in three separate parts and each one is labelled (a), (b), (c). Read each sentence to find out whether there is an error in any underlined part. No sentence has more than one error. When you find an error in any one of the underlined parts (a), (b) or (c), indicate your response on the Answer Sheet at the appropriate space. You may feel that there is no error in a sentence. In that case letter ‘(d)’ will signify a ‘No error’ response.

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