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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.6877·Miscellaneous·2018·Easy

Dr. Bindeshwar Pathak, who was awarded Nikkei Asia Prize, 2018 for Culture and Community, is the founder of

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Q.6878·Miscellaneous·2018·Easy

‘Seva Bhoj Yojana’, a scheme of the Government of India that seeks to reimburse Central share of CGST and IGST on Food/Prasad/Langar/Bhandara offered by religious institutions, is introduced recently by which one of the following Ministries?

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Q.6879·Miscellaneous·2018·Easy

Which one of the following is the theme of the World Blood Donor Day, 2018?

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Q.6880·Miscellaneous·2018·Easy

Who among the following is the ex officio Chairman of the North Eastern Council?

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Q.6881·Miscellaneous·2018·Easy

Which one of the following Indian States (other than Himalayan or NE States) ranked first in the Composite Water Management Index as per the report issued by the NITI Aayog in June 2018?

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Q.6882·Miscellaneous·2018·Easy

The word ‘socialist’ was inserted into the Preamble to the Constitution of India through which one of the following Amendment Acts?

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Q.6883·Miscellaneous·2018·Easy

Consider the following statements: 1. If 10 is added to each entry on a list, then the average increases by 10. 2.If 10 is added to each entry on a list, then the standard deviation increases by 10. 3. If each entry on a list is doubled, then the average doubles. Which of the above statements are correct?

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Q.6884·Miscellaneous·2018·Easy

Which one of the following is an oxidation-reduction reaction?

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Q.6885·Miscellaneous·2018·Easy

The variance of 25 observations is 4. If 2 is added to each observation, then the new variance of the resulting observations is

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Q.6886·Miscellaneous·2018·Easy

8 coins are tossed simultaneously. The probability of getting at least 6 heads is

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Q.6887·Miscellaneous·2018·Easy

Three groups of children contain 3 girls and 1 boy; 2 girls and 2 boys; 1 girl and 3 boys. One child is selected at random from each group. The probability that the three selected consist of 1 girl and 2 boys is

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Q.6888·Miscellaneous·2018·Easy

Which one of the following is not an agent of metamorphism?

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Q.6889·Miscellaneous·2018·Easy

The solution of which one of the following will have pH less than 7?

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Q.6890·Miscellaneous·2018·Easy

If two dice are thrown and at least one of the dice shows 5, then the probability that the sum is 10 or more is:

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Q.6891·Miscellaneous·2018·Easy

The correlation coefficient computed from a set of 30 observations is 0.8. Then the percentage of variation not explained by linear regression is

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Q.6892·Miscellaneous·2018·Easy

The average age of a combined group of men and women is 25 years. If the average age of the group of men is 26 years and that of the group of women is 21 years, then the percentage of men and women in the group is respectively

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Q.6893·Miscellaneous·2018·Easy

Let A, B and C be three mutually exclusive and exhaustive events associated with a random experiment. If P(B) = 1.5 P(A) and P(C) = 0.5 P(B), then P(A) is equal to

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Q.6894·Miscellaneous·2018·Easy

In a bolt factory, machines X, Y, Z manufacture bolts that are respectively 25%, 35% and 40% of the factory’s total output. The machines X, Y, Z respectively produce 2%, 4% and 5% defective bolts. A bolt is drawn at random from the product and is found to be defective. What is the probability that it was manufactured by machine X?

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