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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.13249·Miscellaneous·2013·Easy

Which one among the following statements is not correct ?

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Q.13250·Miscellaneous·2013·Easy

Which of the following is NOT a cause of ocean currents?

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Q.13251·Miscellaneous·2013·Easy

Satellite having the same orbital period as the period of rotation of the Earth about its own axis is known as :

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Q.13252·Miscellaneous·2013·Easy

A liquid initially contracts when cooled down to 4°C but on further cooling down to 0°C, it expands. The liquid is :

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Q.13253·Miscellaneous·2013·Easy

Which of the following is a cold ocean current?

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Q.13254·Miscellaneous·2013·Easy

Dispersion process forms spectrum due to white light falling on a prism. The light wave with shortest wavelength :

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Q.13255·Miscellaneous·2013·Easy

At what time do the highest tides occur during all spring tides?

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Q.13256·Miscellaneous·2013·Easy

Magnetic, electrostatic and gravitational forces come under the category of :

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Q.13257·Miscellaneous·2013·Easy

A ray of white light strikes the surface of an object. If all the colours are reflected the surface would appear :

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Q.13258·Miscellaneous·2013·Easy

In which part of the Earth's surface is the incoming solar radiation minimum throughout the year?

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Q.13259·Miscellaneous·2013·Easy

Motion of an oscillating liquid column in a U-tube is :

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Q.13260·Miscellaneous·2013·Easy

Dirty cloths containing grease and oil stains are cleaned by adding detergents to water. Stains are removed because detergent :

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Q.13261·Miscellaneous·2013·Easy

Match List-I with List-II and choose the correct answer using the codes given below the lists: List-I (Dam) List-II (River) A. Ukai Dam 1.Beas B. Bhakra Dam 2. Krishna C. Nagarjuna Sagar Dam 3. Sutlej D. Pandoh Dam 4. Tapi (Tapti)

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Q.13262·Miscellaneous·2013·Easy

Which element forms the highest number of compounds in the periodic table ?

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Q.13263·Miscellaneous·2013·Easy

Which one among the following is not a correct statement ?

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Q.13264·Miscellaneous·2013·Easy

Which one among the following colours has the highest wavelength ?

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Q.13265·Miscellaneous·2013·Easy

What are the elements which are liquids at room temperature and standard pressure ? 1. Helium 2. Mercury 3. Chlorine 4. Bromine Select the correct answer using the code given below :

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Q.13266·Miscellaneous·2013·Easy

Statement I: Chlorine radicals (Cl*) initiate the chain reaction for ozone depletion. Statement II: Gaseous hypochlorous acid and chlorine are photolysed by sunlight.

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