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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.7093·Miscellaneous·2018·Easy

Consider the following in respect of two events A and B : 1.P(A occurs but not B) = P(A) - P(B) if B ⊂ A 2.P(A alone or B alone occurs) = P(A) + P(B) - P(A ∩ B) 3.P(A ∪ B) = P(A) + P(B) if A and B are mutually exclusive Which of the above is/are correct ?

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Q.7094·Miscellaneous·2018·Easy

A committee of three has to be chosen from a group of 4 men and 5 women. If the selection is made at random, what is the probability that exactly two members are men ?

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Q.7095·Miscellaneous·2018·Easy

Which one of the following is NOT true for bleaching powder?

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Q.7096·Miscellaneous·2018·Easy

AIDS is caused by a virus whose genetic material is

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Q.7097·Miscellaneous·2018·Easy

Which one of the following is an organelle that is NOT found in prokaryotic cells?

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Q.7098·Miscellaneous·2018·Easy

Which one of the following parts of body does NOT take part in the process of breathing?

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Q.7099·Miscellaneous·2018·Easy

Which one of the following statements about classification of plants is correct?

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Q.7100·Miscellaneous·2018·Easy

Which one of the following is the correct sequence of levels of hierarchy of classification of organisms from higher to lower?

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Q.7101·Miscellaneous·2018·Easy

Which one of the following statements about meristematic tissues in plants is correct?

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Q.7102·Miscellaneous·2018·Easy

Which one of the following Union Territories has the highest female literacy rate?

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Q.7103·Miscellaneous·2018·Easy

Consider the following statements about Roaring Forties: 1.They are strong Westerly winds found in the oceans of Southern Hemisphere. 2.The strong east to west air currents are caused by the combination of air being displaced from the Equator towards the South Pole and the earth's rotation and abundance of landmasses to serve as wind breaks. Which of the statements given above is/are correct?

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Q.7104·Miscellaneous·2018·Easy

Consider the following statements: 1.The doldrums is a low pressure area around Equator where the prevailing winds are calm. 2.Chinook is a hot and dry wind that blows in winter and therefore raises the temperature in a short time. Which of the statements given above is/are correct?

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Q.7105·Miscellaneous·2018·Easy

Which one of the following is the driest desert of the world?

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Q.7106·Miscellaneous·2018·Easy

Which of the following statements about latent heat for a given substance is/are correct? 1.It is fixed at a given temperature. 2.It depends upon the temperature and volume. 3.It is independent of temperature and volume. 4.It depends on the temperature but independent of volume. Select the correct answer using the code given below:

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Q.7107·Miscellaneous·2018·Easy

Which one of the following statements about the mass of a body is correct?

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Q.7108·Miscellaneous·2018·Easy

Which of the following statements about a fluid at rest in a cup is/are correct? 1.Pressure is same at all the points in the fluid. 2.Pressure is exerted on the walls. 3.Pressure exists everywhere in the fluid. Select the correct answer using the code given below:

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Q.7109·Miscellaneous·2018·Easy

Which one of the following devices is used to measure atmospheric pressure?

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Q.7110·Miscellaneous·2018·Easy

How is carbon black obtained?

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