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Chemistry

Chemistry
The natural source of hydro-carbon is

Carbohydrates
Biomass
Crude oil
Coal

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Chemistry
Ozone depletion in the atmosphere is mainly caused by

Hydrogen sulphide
Chlorofluorocarbon
Nitrogen dioxide
Sulphur dioxide

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Chemistry
The name of plastic polymer from which combs, toys, bowls etc., can be made, is

Teflon
Polyurethane
Metallic polysulphides
Polystyrene

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Chemistry
Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be

1 : 16 : 2
2 : 16 : 2
2 : 16 : 1
1 : 1 : 1

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Chemistry
"Paramagnetism" is the property of

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

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Chemistry
The Refrigerant 'FREON' is

Fluorspar and Felspar
Difluoro Dichloro Methane
Hydrofluosilicic Acid
Calcium Tetra Fluoride

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MORE MCQ ON Chemistry

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