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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.10495·Miscellaneous·2015·Easy

Statement I: Colour of nitrogen dioxide changes to colourless at low temperature. Statement II: At low temperature Nitrogen tetroxide (N₂O₄) is formed which is colourless.

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Q.10496·Miscellaneous·2015·Easy

Statement I: Diamond is very bright. Statement II: Diamond has very low refractive index.

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Q.10497·Miscellaneous·2015·Easy

Statement I: Oxygen gas is easily produced at a faster rate by heating a mixture of potassium chlorate and manganese dioxide than heating potassium chlorate alone. Statement II: Manganese dioxide acts as a negative catalyst.

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Q.10498·Miscellaneous·2015·Easy

Statement I: While putting clothes for drying up, we spread them out. Statement II: The rate of evaporation increases with an increase in surface area.

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Q.10499·Miscellaneous·2015·Easy

Statement I: Due to diffused or irregular reflection of light, a closed room gets light even if no direct sunlight falls inside the room. Statement II: Irregular reflection, where the reflected rays are not parallel, does not follow the laws of reflection.

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Q.10500·Miscellaneous·2015·Easy

If radius of the earth were to shrink by 1%, its mass remaining the same, g would decrease by nearly

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Q.10501·Miscellaneous·2015·Easy

The displacement-time graph of a particle acted upon by a constant force is

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Q.10502·Miscellaneous·2015·Easy

Which one of the following is not a result of surface tension ?

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Q.10503·Miscellaneous·2015·Easy

Match List I with List II and select the correct answer using the code given below the Lists : List I (Compound) List II (Nature) A. Sodium hydroxide 1. Strong acid B. Calcium oxide 2. Alkali C. Acetic acid 3. Weak acid D. Hydrochloric acid 4. Base

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Q.10504·Miscellaneous·2015·Easy

Which one of the following statements is not correct ?

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Q.10505·Miscellaneous·2015·Easy

Match List I with List II and select the correct answer using the code given below the Lists: List I List II(State) (Paper industry centre) A. Kamptee 1. Karnataka Rajahmundry 2. Maharashtra C. Shahdol 3. Andhra Pradesh D. Belagola 4. Madhya Pradesh

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Q.10506·Miscellaneous·2015·Easy

The newly formed state of Telangana is surrounded by

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Q.10507·Miscellaneous·2015·Easy

Energy is required for maintenance of life. It is obtained by a process called

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Q.10508·Miscellaneous·2015·Easy

All life forms contain "molecules of life". These are

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Q.10509·Miscellaneous·2015·Easy

If a charged particle (+q) is projected with certain velocity parallel to the magnetic field, then it will

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Q.10510·Miscellaneous·2015·Easy

Optical fibres, though bent in any manner, allows light to pass through. What is the inference that one can draw from it ?

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Q.10511·Miscellaneous·2015·Easy

Consider x = tan⁻¹(1/5), y = tan⁻¹(1/70) and z = tan⁻¹(1/99) What is x equal to?

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Q.10512·Miscellaneous·2015·Easy

Consider the triangle ABC with vertices A(-2, 3), B(2, 1) and C(1, 2) What is the circumcentre of the triangle ABC?

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