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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.5887·Miscellaneous·2019·Easy

A fuse wire must be

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Q.5888·Miscellaneous·2019·Easy

LIGO stands for

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Q.5889·Miscellaneous·2019·Easy

When a beam of white light passes through a glass prism, the colour of light beam that deviates the least is

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Q.5890·Miscellaneous·2019·Easy

The formula for conversion between Fahrenheit and Celsius is °F = X + (1.8 × °C) What is factor X?

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Q.5891·Miscellaneous·2019·Easy

‘Black hole’ is a

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Q.5892·Miscellaneous·2019·Easy

Which one of the following statements regarding a thermos flask is NOT correct?

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Q.5893·Miscellaneous·2019·Easy

In the given velocity (V) versus time (t) graph, accelerated and decelerated motions are respectively represented by line segments

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Q.5894·Miscellaneous·2019·Easy

1 dyne (a unit of force in CGS system) equals to

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Q.5895·Miscellaneous·2019·Easy

The Sun is seen little before it rises and for a short while after it sets. This is because of

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Q.5896·Miscellaneous·2019·Easy

Tooth enamel is made up of which one of the following calcium compounds?

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Q.5897·Miscellaneous·2019·Easy

Consider the following statements relating to Richter scale : 1.It was devised in 1935 by Charles F. Richter 2.It describes the quantity of energy released by a single earthquake 3.Richter Scale has no upper limit Which of the statements given above is/are correct?

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Q.5898·Miscellaneous·2019·Easy

Which one of the following is the correct sequence of proved coal reserves in the Indian States in decreasing order?

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Q.5899·Miscellaneous·2019·Easy

Which one of the following is an example of Salt-Crystal growth?

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Q.5900·Miscellaneous·2019·Easy

Which one of the following substances is NOT a mixture?

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Q.5901·Miscellaneous·2019·Easy

Which one of the following will NOT produce carbon dioxide on reacting with an aqueous solution of hydrochloric acid?

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Q.5902·Miscellaneous·2019·Easy

On exposure to moist air, copper gains a green coat on its surface due to formation of which one of the following compounds?

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Q.5903·Miscellaneous·2019·Easy

Which one of the following forces is non-central and non-conservative?

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Q.5904·Miscellaneous·2019·Easy

The focal length of the objective lens of a telescope is 50 cm. If the magnification of the telescope is 25, then the focal length of the eye-piece is

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