Chemistry Practice Questions Set 10

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For India's Top Government Exams

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In an atomic explosion, the release of a large amount of energy is due to the conversion of ___
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chemical energy into nuclear energy

nuclear energy into heat

mass into energy

chemical energy into heat

Which one among the following statements is correct? Untitled Question *

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All bases are alkalis

None of the bases is an alkali

There are no more bases except the alkalis

All alkalis are bases but all bases are not alkalis

Soaps cannot be used in acidic conditions because they lose their cleansing effect due to the formation of insoluble ___
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esters

alcohols

hydrocarbons

long-chain fatty acids

DIRECTION: The following question consist of two statements. Statement l and Statement ll. You to examine these statements carefully and select the answer to this question using the codes given below:
Statement l: All compounds contain more than one element.
Statement ll: All compounds are heterogeneous mixtures.
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Both the statements are individually true and Statement ll is the correct explanation of Statement l

Both the statements are individually true but Statement ll is not the correct explanation of Statement l

Statement l is true, but Statement ll is false

Statement l is false, but Statement ll is true

The gas which turns lime water milky is
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carbon dioxide

carbon monoxide

ammonia

nitrogen dioxide

The pH of fresh groundwater slightly decreases upon exposure to air because
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carbon dioxide from air is dissolved in the water

oxygen from the air is dissolved in the water

the dissolved carbon dioxide of the groundwater escapes into the air

the dissolved oxygen of the groundwater escapes into the air

The elements of a group in the periodic table
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have Similar chemical properties

have consecutive atomic numbers

are isobars

are isotopes

Antacids are commonly used to get rid of acidity in the stomach. A commonly used antacid is
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sodium hydrogen phthalate

magnesium hydroxide

calcium hydroxide

manganese acetate

Which one of the following polymers is used for making bulletproof material?
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Polyvinyl chloride

Polystyrene

Polyethylene

Polyamide

On the labels of the bottles, some soft drinks are claimed to be acidity regulators. They regulate acidity using ___
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carbon dioxide

bicarbonate salts

Both (a) and (b)

carbon dioxide and lime

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