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Chemistry

Chemistry
The gas that usually causes explosions in coal mines is

Air
Hydrogen
Methane
Carbon monoxide

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Chemistry
Milk tastes sour when it is left in open for some time. This happens due to the formation of

Citric acid
Acetic acid
Carbonic acid
Lactic acid

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Chemistry
Which of the following elements is non-radioactive ?

Plutonium
Zirconium
Thorium
Uranium

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Chemistry
In which of the following substances all carbon atoms are quaternary in nature ?

Graphite
Napthalene
Teflon
Diamond

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Chemistry
Brass is a solution of molten copper in

Solid zinc
Gaseous zinc
Molten zinc
Molten tin

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Chemistry
Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere?

Carbon dioxide
Chlorofluorocarbons
Sulphur dioxide
Nitrous oxide

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MORE MCQ ON Chemistry

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