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Chemistry

Chemistry
Sweat contains water and ________

Lactic acid
Vinegar
Salt
Citric acid

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Chemistry
Helium is added to the oxygen supply of deep sea divers because it is

Less poisonous than nitrogen
Lighter than nitrogen
Less soluble in blood than nitrogen at high pressure
Readily miscible with oxygen

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Chemistry
Ozone depletion in the atmosphere is mainly caused by

Hydrogen sulphide
Sulphur dioxide
Chlorofluorocarbon
Nitrogen dioxide

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Chemistry
The material used in the manufacture of lead pencil is

Carbon
Graphite
Lead
Mica

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Chemistry
Which of the following fibres catches fire least ?

Terricot
Nylon
Rayon
Cotton

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Chemistry
The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of

metallurgy
atomic structure
periodic table of contents
discovery of elements

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MORE MCQ ON Chemistry

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