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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.6013·Miscellaneous·2019·Easy

Who among the following popularized the use of embryological characters in taxonomy ?

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Q.6014·Miscellaneous·2019·Easy

Water is heated with a coil of resistance R connected to domestic supply. The rise of temperature of water will depend on 1. Supply voltage. 2. Current passing through the coil. 3. Time for which voltage is supplied. Select the correct answer from among the following :

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Q.6015·Miscellaneous·2019·Easy

A pendulum clock is lifted to a height where the gravitational acceleration has a certain value g. Another pendulum clock of same length but of double the mass of the bob is lifted to another height where the gravitational acceleration is g/2. The time period of the second pendulum would be : (in terms of period T of the first pendulum)

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Q.6016·Miscellaneous·2019·Easy

The loudness of sound depends upon the

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Q.6017·Miscellaneous·2019·Easy

Two bodies of mass M each are placed R distance apart. In another system, two bodies of mass 2M each are placed R/2 distance apart. If F be the gravitational force between the bodies in the first system, then the gravitational force between the bodies in the second system will be

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Q.6018·Miscellaneous·2019·Easy

Light rays move in straight lines. But through an optical fibre, they can move in any type of zigzag path because

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Q.6019·Miscellaneous·2019·Easy

Which one of the following statements regarding cathode rays is not correct ?

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Q.6020·Miscellaneous·2019·Easy

A very large volume of hydrogen can be accommodated by making

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Q.6021·Miscellaneous·2019·Easy

Which one of the following is not a monatomic element ?

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Q.6022·Miscellaneous·2019·Easy

Which one of the following represents the correct order of electron releasing tendency of metals ?

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Q.6023·Miscellaneous·2019·Easy

Which one of the following is the major constituent of biogas ?

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Q.6024·Miscellaneous·2019·Easy

Thyroid gland produces a hormone called “Thyroxine” which

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Q.6025·Miscellaneous·2019·Easy

Which one of the following is a bacterium that causes disease in the human body ?

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Q.6026·Miscellaneous·2019·Easy

Which one of the following statements regarding viruses is not true ?

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Q.6027·Miscellaneous·2019·Easy

Which one of the following diseases may be caused by the deficiency of vitamin C ?

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Q.6028·Miscellaneous·2019·Easy

Compared to audible sound waves, ultrasound waves have

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Q.6029·Miscellaneous·2019·Easy

A rigid body of mass 2 kg is dropped from a stationary balloon kept at a height of 50 m from the ground. The speed of the body when it just touches the ground and the total energy when it is dropped from the balloon are respectively (acceleration due to gravity = 9·8 m/s²)

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Q.6030·Miscellaneous·2019·Easy

The temperature of a place on one sunny day is 113 in Fahrenheit scale. The Kelvin scale reading of this temperature will be

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