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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.2035·Miscellaneous·2023·Easy

Airbags work on the principle of a chemical reaction triggered by the impact producing a gaseous product that causes a sudden volume change. Which one among the following chemical conversions is responsible for this ?

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Q.2036·Miscellaneous·2023·Easy

For manufacturing of glass, which among the following is used as a source of silica ?

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Q.2037·Miscellaneous·2023·Easy

Which among the following is the popular method for manufacture of ammonia ?

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Q.2038·Miscellaneous·2023·Easy

Which among the following is the correct arrangement of halogens in the increasing order of their oxidizing nature ?

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Q.2039·Miscellaneous·2023·Easy

Copper sulphate crystals available in the market are blue coloured crystals. By careful heating, they turn to white colour. Which one of the following is responsible for the blue colour ?

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Q.2040·Miscellaneous·2023·Easy

Which among the following statements is not correct with respect to allotropes of Carbon ?

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Q.2041·Miscellaneous·2023·Easy

Yashovarman was ruler of which one of the following kingdoms?

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Q.2042·Miscellaneous·2023·Easy

Which one of the following is not a characteristic feature of fungi ?

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Q.2043·Miscellaneous·2023·Easy

Which one of the following statements about bryophytes is not correct ?

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Q.2044·Miscellaneous·2023·Easy

What is the specific purpose of using potassium hydroxide during the saponification process ?

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Q.2045·Miscellaneous·2023·Easy

Which one of the following is the lowermost/innermost intrusive igneous rock ?

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Q.2046·Miscellaneous·2023·Easy

Which one of the following is the correct arrangement of metals in the decreasing order of their reactivity ?

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Q.2047·Miscellaneous·2023·Easy

Which one among the following villages was recently declared as India’s first 24 × 7 solar-powered village ?

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Q.2048·Miscellaneous·2023·Easy

Tableaux of which one of the following States was adjudged the best in the Republic Day Parade, 2023 ?

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Q.2049·Miscellaneous·2023·Easy

A = i - j B = j + k Consider the following points: 1.(-1, -3, 1) 2.(-1, 3, 2) 3.(-2, 5, 3) What is the magnitude of AB?

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Q.2050·Miscellaneous·2023·Easy

The 4th edition of joint military exercise 'DUSTLIK' between the Indian Army and the Uzbekistan Army was held in :

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Q.2051·Miscellaneous·2023·Easy

Which of the following is India’s first privately developed rocket launched by ISRO recently ?

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Q.2052·Miscellaneous·2023·Easy

If it is 12 noon in New Delhi, what will be the time in London, UK ?

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