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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.5977·Miscellaneous·2019·Easy

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

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Q.5978·Miscellaneous·2019·Easy

‘Black hole’ is a

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Q.5979·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.5980·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.5981·Miscellaneous·2019·Easy

LIGO stands for

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Q.5982·Miscellaneous·2019·Easy

A fuse wire must be

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Q.5983·Miscellaneous·2019·Easy

Kamarajar Port was commissioned in 2001 to handle thermal coal requirements. It is situated along the coast of which Indian State?

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Q.5984·Miscellaneous·2019·Easy

If A = [0 1; 1 0], then the matrix A is a/an

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Q.5985·Miscellaneous·2019·Easy

If A = {a, b, c}, then the power set of A is

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Q.5986·Miscellaneous·2019·Easy

In a school, all the students play at least one of three indoor games chess, carrom and table tennis. 60 play chess, 50 play table tennis, 48 play carrom, 12 play chess and carrom, 15 play carrom and table tennis, 20 play table tennis and chess. What can be the minimum number of students in the school?

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Q.5987·Miscellaneous·2019·Easy

A solid disc and a solid sphere have the same mass and same radius. Which one has the higher moment of inertia about its centre of mass ?

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Q.5988·Miscellaneous·2019·Easy

In a school, all the students play at least one of three indoor games chess, carrom and table tennis. 60 play chess, 50 play table tennis, 48 play carrom, 12 play chess and carrom, 15 play carrom and table tennis, 20 play table tennis and chess. What can be the maximum number of students in the school?

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Q.5989·Miscellaneous·2019·Easy

A car starts from Bengaluru, goes 50 km in a straight line towards south, immediately turns around and returns to Bengaluru. The time taken for this round trip is 2 hours. The magnitude of the average velocity of the car for this round trip

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Q.5990·Miscellaneous·2019·Easy

“The sum of emfs and potential differences around a closed loop equals zero” is a consequence of

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Q.5991·Miscellaneous·2019·Easy

A is a square matrix of order 3 such that its determinant is 4. What is the determinant of its transpose?

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Q.5992·Miscellaneous·2019·Easy

A student measures certain lengths using a meter scale having least count equal to 1 mm. Which one of the following measurements is more precise ?

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Q.5993·Miscellaneous·2019·Easy

From 6 programmers and 4 typists, an office wants to recruit 5 people. What is the number of ways this can be done so as to recruit at least one typist?

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Q.5994·Miscellaneous·2019·Easy

If the work done on the system or by the system is zero, which one of the following statements for a gas kept at a certain temperature is correct ?

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