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Chemistry

Chemistry
Stalactites and Stalagmites form due to the precipitation of :

CaCl2
CaCO3
MgCl2
MgCO3

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Chemistry
Which of the following is colourless ?

Chlorine
Phosphorus
Oxygen
Sulphur

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Chemistry
Acid rain is caused due to emission of which of the following in to the atmosphere ?

Carbon monoxide and nitrogen
Carbon dioxide and carbon monoxide
Oxides of nitrogen and sulphur
Ozone and carbon dioxide

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Chemistry
"Paramagnetism" is the property of

Unpaired electrons
Paired electrons
Completely filled electronics subshells
Completely vacant electronic subshells

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Chemistry
The acid which is secreted by the glands in the stomach wall is

Sulphuric acid
Nitric acid
Hydrochloric acid
Phosphoric acid

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Chemistry
Iron filings can be separated from a heterogenous mixture using the technique of :

Sublimation
Evaporation
Magnetization
Sedimentation

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MORE MCQ ON Chemistry

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