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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.12619·Miscellaneous·2013·Easy

The ceilings of a concert hall are generally curved

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Q.12620·Miscellaneous·2013·Easy

Bats can know about their prey at a distance even in the night by emitting

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Q.12621·Miscellaneous·2013·Easy

Rays of light get refracted while passing from air to glass because

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Q.12622·Miscellaneous·2013·Easy

White light while passing through a glass prism breaks up into light of different colours because

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Q.12623·Miscellaneous·2013·Easy

Which one among the following situations is best represented by the velocity – time plot shown above?

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Q.12624·Miscellaneous·2013·Easy

When long dry hair is brushed the strands often move away from each other because while brushing

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Q.12625·Miscellaneous·2013·Easy

If the length of a simple pendulum is being increased by 4-fold, time period of oscillation will be

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Q.12626·Miscellaneous·2013·Easy

A pressure cooker works on the principle of

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Q.12627·Miscellaneous·2013·Easy

Pressure of a gas increases due to increase of its temperature because at higher temperature

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Q.12628·Miscellaneous·2013·Easy

The presence of sulphur in gunpowder

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Q.12629·Miscellaneous·2013·Easy

Calcium ammonium nitrate (CAN) is a popular nitrogen fertilizer because it is

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Q.12630·Miscellaneous·2013·Easy

Chromium oxide is used as an ingredient in paints to obtain

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Q.12631·Miscellaneous·2013·Easy

The pH of the solution obtained by dissolving pure sodium chloride in water is

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Q.12632·Miscellaneous·2013·Easy

Oxygen on reaction with non-metals forms oxides, which are

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Q.12633·Miscellaneous·2013·Easy

Metalloids are

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Q.12634·Miscellaneous·2013·Easy

Two reactants in a flask produce bubbles of gas; it turns lime water into milky. The reactants in the flask are

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Q.12635·Miscellaneous·2013·Easy

What is the vector perpendicular to both the vectors i - j and i ?

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Q.12636·Miscellaneous·2013·Easy

The position vectors of the points A and B are respectively 3i - 5j + 2k and i + j - k . What is the length of AB?

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