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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.11665·Miscellaneous·2014·Easy

Which of the following statements about hydrogen is/are correct? 1.Hydrogen has three isotopes of which protium is the most common. 2.Hydrogen ion (H⁺) exists freely in solution. 3.Dihydrogen, H₂, acts as a reducing agent. Select the correct answer using the code given below.

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Q.11666·Miscellaneous·2014·Easy

The current (I)-voltage (V) plot of a certain electronic device is given above. The device is

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Q.11667·Miscellaneous·2014·Easy

Consider the following surface winds: 1.Doldrums 2.Trade winds 3.Westerlies 4.Polar winds Which one among the following is the idealized global pattern of these winds from the Equator to the Pole?

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Q.11668·Miscellaneous·2014·Easy

Dropsy is a disease caused due to adulteration in

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Q.11669·Miscellaneous·2014·Easy

The displacement (x)-time (t) graph given above approximately represents the motion of a

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Q.11670·Miscellaneous·2014·Easy

Bernoulli’s principle is based on which one among the following laws?

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Q.11671·Miscellaneous·2014·Easy

Which one among the following is the coral group of islands of India?

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Q.11672·Miscellaneous·2014·Easy

After diagnosis of disease in a person, the doctor advises the patient iron and folic acid tablets. The person is suffering from

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Q.11673·Miscellaneous·2014·Easy

Which of the following pairs represents isoelectronic ions?

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Q.11674·Miscellaneous·2014·Easy

The latest discovered state of matter is

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Q.11675·Miscellaneous·2014·Easy

The summer and winter seasons in a year are caused by

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Q.11676·Miscellaneous·2014·Easy

Within an animal cell, the most abundant inorganic constituent of protoplasm is

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Q.11677·Miscellaneous·2014·Easy

Statement I: The acceleration due to gravity decreases with increase in height from the surface of the Earth. Statement II: The acceleration due to gravity is inversely proportional to the square of distance from the centre of the Earth.

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Q.11678·Miscellaneous·2014·Easy

Statement I: Chemical weathering processes are found more active in hot and humid environment. Statement II: High temperature and rainfall help in the process of decomposition of rocks.

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Q.11679·Miscellaneous·2014·Easy

Which of the following statements about vitamins are correct? 1.Vitamin C is essential to make connective tissue in body. 2.Vitamin D is needed for synthesis of eye pigment. 3.Vitamin B12 helps in maturation of RBC. 4.Vitamin C is required to make use of calcium absorbed from the intestine. Select the correct answer using the code given below.

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Q.11680·Miscellaneous·2014·Easy

What is the correct sequence from the smallest to the largest grain of the following types of clastic rocks?

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Q.11681·Miscellaneous·2014·Easy

Which one among the following waves bats use to detect the obstacles in their flying path?

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Q.11682·Miscellaneous·2014·Easy

The most stable form of carbon is

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