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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.7129·Miscellaneous·2018·Easy

Suppose cos A is given. If only one value of cos(A/2) is possible, then A must be

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Q.7130·Miscellaneous·2018·Easy

What is the distance between the points which divide the line segment joining (4, 3) and (6, 7) internally and externally in the ratio 2 : 3?

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Q.7131·Miscellaneous·2018·Easy

What is the equation of the straight line cutting off an intercept 2, from the negative direction of x-axis and inclined at 30° with the positive direction of x-axis?

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Q.7132·Miscellaneous·2018·Easy

Which one of the following is the value of 1 kWh of energy converted into joules?

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Q.7133·Miscellaneous·2018·Easy

Which one of the following has maximum inertia?

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Q.7134·Miscellaneous·2018·Easy

What is the net force experienced by a bar magnet placed in a uniform magnetic field?

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Q.7135·Miscellaneous·2018·Easy

An object is moving with uniform acceleration a. Its initial velocity is u and after time t its velocity is v. The equation of its motion is v = u + at. The velocity (along y-axis) time (along x-axis) graph shall be a straight line

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Q.7136·Miscellaneous·2018·Easy

If an object moves with constant velocity then which one of the following statements is NOT correct?

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Q.7137·Miscellaneous·2018·Easy

If T is the time period of an oscillating pendulum, which one of the following statements is NOT correct?

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Q.7138·Miscellaneous·2018·Easy

Which one of the following statements is correct?

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Q.7139·Miscellaneous·2018·Easy

My most interesting visitor comes at night, when the lights are still burning — a tiny bat who prefers to fly in through the open door, and will use the window only if there is no alternative. His object in entering the house is to snap up the moths that cluster around the lamps. All the bats I have seen fly fairly high, keeping near the ceiling; but this particular bat flies in low, like a dive-bomber, zooming in and out of chair legs and under tables. Once, he passed straight between my legs. Has his radar gone wrong, I wondered, or is he just plain crazy ? What, according to you, can be the most suitable title for the passage ?

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Q.7140·Miscellaneous·2018·Easy

If sin(x + y) = (a – b) / (sin(x – y) = a – b), then what is tan x / tan y equal to?

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Q.7141·Miscellaneous·2018·Easy

In this question each item consists of a sentence with an underlined word/words followed by four words. Select the option that is opposite in meaning to the underlined word/words and mark your response in your Answer Sheet accordingly. There is no likeness between him and his brother.

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Q.7142·Miscellaneous·2018·Easy

In this question each item consists of a sentence with an underlined word/words followed by four words. Select the option that is opposite in meaning to the underlined word/words and mark your response in your Answer Sheet accordingly. He had a fine ear for music.

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Q.7143·Miscellaneous·2018·Easy

In this question each item consists of a sentence with an underlined word/words followed by four words. Select the option that is opposite in meaning to the underlined word/words and mark your response in your Answer Sheet accordingly. Due to the postal strike, the outgoing mail got delayed.

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Q.7144·Miscellaneous·2018·Easy

Which one of the following statements about gravitational force is NOT correct?

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Q.7145·Miscellaneous·2018·Easy

Whether an object will float or sink in a liquid, depends on

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Q.7146·Miscellaneous·2018·Easy

The accidental touch of Nettle leaves creates a burning sensation, which is due to inject of

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