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Chemistry

Chemistry
Which one of the following is not present in cement ?

Clay
Alum
Alumina
Gypsum

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Chemistry
Food cans are coated with tin and not with zinc because

Zinc is less reactive than tin
Zinc is costlier than tin
Zinc is more reactive than tin
Zinc has a higher melting point than tin

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Chemistry
Bleaching powder is used in drinking water as a/an

Disinfectant
Antiseptic
Antibiotic
Coagulant

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Chemistry
Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called

Smoke
Fumes
Mists
Aerosols

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Chemistry
Stains of rust on clothes can be removed by :

Oxalic acid
H2O2
Petrol
Alcohol

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Chemistry
Which of the following is not a greenhouse gas ?

Hydrogen
Nitric oxide
Chlorofluorocarbon
Carbon dioxide

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MORE MCQ ON Chemistry

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