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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.9325·Miscellaneous·2016·Easy

An atom of carbon has 6 protons. Its mass number is 12. How many neutrons are present in an atom of carbon?

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Q.9326·Miscellaneous·2016·Easy

The S.I. unit of acceleration is

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Q.9327·Miscellaneous·2016·Easy

During solar eclipse

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Q.9328·Miscellaneous·2016·Easy

Two bodies A and B are moving with equal velocities. The mass of B is double that of A. In this context, which one of the following statements is correct?

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Q.9329·Miscellaneous·2016·Easy

Structurally, the Meghalaya region is a part of

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Q.9330·Miscellaneous·2016·Easy

In India, glacial terraces known as ‘Karewas’ are found in

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Q.9331·Miscellaneous·2016·Easy

Which of the following substances are harmful for health if present in food items? 1. Pesticide residues 2. Lead 3. Metanil yellow 4. Mercury Select the correct answer using the code given below:

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Q.9332·Miscellaneous·2016·Easy

Soap is sodium or potassium salt of

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Q.9333·Miscellaneous·2016·Easy

A body has a free fall from a height of 20 m. After falling through a distance of 5 m, the body would

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Q.9334·Miscellaneous·2016·Easy

Suppose the force of gravitation between two bodies of equal masses is F. If each mass is doubled keeping the distance of separation between them unchanged, the force would become

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Q.9335·Miscellaneous·2016·Easy

Arrange the following centres of AIIMS from East to West : 1. Rishikesh 2. New Delhi 3. Patna 4. Bhubaneswar Select the correct answer using the code given below:

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Q.9336·Miscellaneous·2016·Easy

One of the main causes of air pollution in cities is emissions from vehicles like cars and trucks. Cars emit various pollutants which are bad for human health when inhaled, like 1. Nitrogen oxides (NOₓ) 2. Carbon monoxide (CO) 3. Carbon dioxide (CO₂) 4. Benzene Which of the above pollutants are not tolerated by human beings even at very low levels?

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Q.9337·Miscellaneous·2016·Easy

Which one of the following is not a chemical change?

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Q.9338·Miscellaneous·2016·Easy

The phosphorus used in the manufacture of safety matches is

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Q.9339·Miscellaneous·2016·Easy

Density of water is

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Q.9340·Miscellaneous·2016·Easy

A container is first filled with water and then the entire water is replaced by mercury. Mercury has a density of 13.6 × 10³ kg/m³. If X is the weight of the water and Y is the weight of the mercury, then  

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Q.9341·Miscellaneous·2016·Easy

In this question consist of two statements, Statement I and Statement II. Examine these two statements carefully and select the answers to these items using the code given below: Statement I : India has wide variation in population density. Statement II : Factors like agricultural productivity and history of settlements have greatly influenced the population density pattern in India.

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Q.9342·Miscellaneous·2016·Easy

Mass of a particular amount of substance 1. is the amount of matter present in it. 2. does not vary from place to place. 3. changes with change in gravitational force. Select the correct answer using the code given below:

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