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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.9109·Miscellaneous·2016·Easy

sin A + 2 sin 2A + sin 3A is equal to which of the following ? 1. 4 sin 2A cos²(A/2) 2. 2 sin 2A (sin²(A/2) + cos²(A/2)) 3. 8 sin A cos A cos²(A/2) Select the correct answer using the code given below :

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Q.9110·Miscellaneous·2016·Easy

When sound waves are propagated through a medium, the physical quantity/quantities transmitted is/are

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Q.9111·Miscellaneous·2016·Easy

A ball is thrown vertically upward from the ground with a speed of 25.2 m/s. The ball will reach the highest point of its journey in

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Q.9112·Miscellaneous·2016·Easy

When a ray of light enters a glass slab, then

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Q.9113·Miscellaneous·2016·Easy

It is difficult to kill viruses because they

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Q.9114·Miscellaneous·2016·Easy

With reference to biodiversity, which of the following statements is/are correct ? 1. Species richness and high degree of endemism are important criteria for identifying biodiversity hot spots. 2. Species diversity is highest in the tropics and decreases down the poles. 3. Biodiversity conservation may be in situ as well as ex situ . Select the correct answer using the code given below

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Q.9115·Miscellaneous·2016·Easy

Malarial parasite is a

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Q.9116·Miscellaneous·2016·Easy

In which one of the following, methanogens, i.e., methane producing bacteria are not present ?

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Q.9117·Miscellaneous·2016·Easy

Consider the following statements about cactus : 1. The leaves are reduced to spines. 2. The stem does the photosynthesis. Which of the statements given above is/are correct ?

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Q.9118·Miscellaneous·2016·Easy

Combination of one volume of nitrogen with three volumes of hydrogen produces

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Q.9119·Miscellaneous·2016·Easy

Which one of the following has different number of molecules? (All are kept at normal temperature and pressure)

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Q.9120·Miscellaneous·2016·Easy

There are six electrons, six protons and six neutrons in an atom of an element. What is the atomic number of the element?

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Q.9121·Miscellaneous·2016·Easy

Identify the element having zero valency

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Q.9122·Miscellaneous·2016·Easy

Match List I with List II and select the correct answer using the code given below the Lists : List I (Process) List II (Type of change) A. Heating Camphor 1. Chemical B. Cooling of water vapour up to room temperature 2. Evaporation C. Cooking an egg 3. Condensation D. Formation of water vapour at room temperature 4. Sublimation Code :

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Q.9123·Miscellaneous·2016·Easy

One kilowatt hour is equal to

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Q.9124·Miscellaneous·2016·Easy

Match List I with List II and select the correct answer using the code given below the Lists : List I (River) List II (Mouth of the river) A. Danube 1. North sea B. Rhine 2. Black sea C. Rhone 3. Bay of Biscay D. Loire 4. Mediterranean sea Code :

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Q.9125·Miscellaneous·2016·Easy

Arrange the following states in order of their decreasing population size as per the census 2011 : 1. West Bengal 2. Bihar 3. Maharashtra 4. Andhra Pradesh Select the correct answer using the code given below :

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Q.9126·Miscellaneous·2016·Easy

In which one of the following countries, the Mediterranean type of Biome is found?

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