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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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Q.6067·Miscellaneous·2019·Easy

If A is a square matrix of order n > 1, then which one of the following is correct?

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Q.6068·Miscellaneous·2019·Easy

Soaps clean surfaces on the principle based on

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Q.6069·Miscellaneous·2019·Easy

Which one of the following does not represent the salt, Calcium carbonate ?

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Q.6070·Miscellaneous·2019·Easy

10 g of ice at -10°C is mixed with 10 g of water at 0°C. The amount of heat required to raise the temperature of mixture to 10°C is

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Q.6071·Miscellaneous·2019·Easy

The numbers 1, 5 and 25 can be three terms (not necessarily consecutive) of

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Q.6072·Miscellaneous·2019·Easy

Which one of the following statements regarding lenses is not correct ?

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Q.6073·Miscellaneous·2019·Easy

Consider the following part of an electric circuit : The total electrical resistance in the given part of the electric circuit is

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Q.6074·Miscellaneous·2019·Easy

If C(20, n + 2) = C(20, n - 2), then what is n equal to?

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Q.6075·Miscellaneous·2019·Easy

A sample of ‘soft soap’ contains

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Q.6076·Miscellaneous·2019·Easy

Which one of the following statements about water is not true?

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Q.6077·Miscellaneous·2019·Easy

The raw materials used for the manufacture of Portland cement are

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Q.6078·Miscellaneous·2019·Easy

If [x -3i 1; y 1 i; 0 2i -i] = 6 + 11i, then what are the values of x and y respectively?

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Q.6079·Miscellaneous·2019·Easy

Which one of the following statements about diamond and graphite is not correct?

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Q.6080·Miscellaneous·2019·Easy

Which one of the following statements is correct?

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Q.6081·Miscellaneous·2019·Easy

When a ball bounces off the ground, which of the following changes suddenly? (Assume no loss of energy to the floor)

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Q.6082·Miscellaneous·2019·Easy

Which one of the following statements about glass is not correct?

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Q.6083·Miscellaneous·2019·Easy

The Munda language group belongs to which family ?

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Q.6084·Miscellaneous·2019·Easy

In this question there are 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 and 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) Every one of the boys (b) love to (c) ride (d) No error

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