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Chemistry

Chemistry
Liquid Nitrogen boils at

97 Kelvin
77 kelvin
82 Kelvin
54 kelvin

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

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

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Chemistry
Molasses a by-product in the manufacture of sugar, is converted into

Fuel
Pulp
Alcohol
Paper

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Chemistry
The pair of compounds used as anaesthetic in medicines :

Nitrogen dioxide, ether
Ether, Ammonia
Chloroform, Nitrogen dioxide
Nitrous oxide, Chloroform

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

Aerosols
Fumes
Mists
Smoke

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Chemistry
The process of covering water pipes made of Iron with Zinc layer to prevent corrosion is called :

Vulcanization
Zinc plating
Alloy formation
Galvanization

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MORE MCQ ON Chemistry

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