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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.10783·Miscellaneous·2015·Easy

Which of the following is/are not central feature(s) of Article 343 of the Constitution of India? 1.Hindi in Devanagari Script shall be the national language of the Union. 2.The official language of the Union shall be Hindi in Devanagari Script. 3.English language shall continue to be used for official purposes within States. 4.If two or more States agree, Hindi language should be the official language of communication between the States. Select the correct answer using the code:

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Q.10784·Miscellaneous·2015·Easy

Which one of the following is correct?

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Q.10785·Miscellaneous·2015·Easy

The sum of first 47 terms of the series 1/4 + 1/5 - 1/6 + 1/4 + 1/5 - 1/6 + 1/4 + 1/5 - 1/6 + ...... is

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Q.10786·Miscellaneous·2015·Easy

Three athletes run a 4 km race. Their speeds are in the ratio 16 : 15 : 11. When the winner wins the race, then the distance between the athlete in the second position to the athlete in the third position is

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Q.10787·Miscellaneous·2015·Easy

Two trains, one is of 121 m in length at the speed of 40 km/hour and the other is of 99 m in length at the speed of 32 km/hour are running in opposite directions. In how much time will they be completely clear from each other from the moment they meet?

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Q.10788·Miscellaneous·2015·Easy

If a : b = 3 : 5 and b : c = 7 : 8, then 2a : 3b : 7c is equal to

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Q.10789·Miscellaneous·2015·Easy

If m persons can paint a house in d days, how many days will it take for (m + 2) persons to paint the same house?

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Q.10790·Miscellaneous·2015·Easy

By increasing the speed of his car by 15 km/hour, a person covers 300 km distance by taking an hour less than before. The original speed of the car was

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Q.10791·Miscellaneous·2015·Easy

If 4 men working 4 hours per day for 4 days complete 4 units of work, then how many units of work will be completed by 2 men working for 2 hours per day in 2 days?

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Q.10792·Miscellaneous·2015·Easy

A motor boat, whose speed is 15 km/hour in still water goes 30 km downstream and comes back in a total of 4 hour and 30 minutes. The speed of the stream is

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Q.10793·Miscellaneous·2015·Easy

In a race A, B and C take part. A beats B by 30 m, B beats C by 20 m and A beats C by 48 m. Which of the following is/are correct? 1. The length of the race is 300 m. 2. The speeds of A, B and C are in the ratio 50 : 45 : 42. Select the correct answer using the code given below:

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Q.10794·Miscellaneous·2015·Easy

Let x and y be positive integers such that x > y. The expressions 3x + 2y and 2x + 3y when divided by 5 leave remainders 2 and 3 respectively. What is the remainder when (x - y) is divided by 5?

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Q.10795·Miscellaneous·2015·Easy

Let x and y be positive integers such that x is prime and y is composite. Which of the following statements are correct? 1. (y - x) can be an even integer. 2. xy can be an even integer. 3. 0.5(x + y) can be an even integer. Select the correct answer using the code given below:

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Q.10796·Miscellaneous·2015·Easy

The number of pairs (x, y) where x, y are integers satisfying the equation 21x + 48y = 5 is

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Q.10797·Miscellaneous·2015·Easy

The value of a single discount on some amount which is equivalent to a series of discounts of 10%, 20% and 40% on the same amount, is equal to

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Q.10798·Miscellaneous·2015·Easy

Which one of the following is correct?

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Q.10799·Miscellaneous·2015·Easy

A and B are two taps which can fill a tank individually in 10 minutes and 20 minutes respectively. However, there is a leakage at the bottom, which can empty a filled tank in 40 minutes. If the tank is empty initially, how much time will both the taps take to fill the tank with leakage?

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Q.10800·Miscellaneous·2015·Easy

The seven digit number 876p37q is divisible by 225. The values of p and q can be respectively

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