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Calcium Chloride
Calcium Nitrate
Calcium Sulphate Hydrate
None of these
The chemical name of quartz is
The chemical name of vitamin C is
The chemical symbol of Sodium is
The chemical used for cloud seeding for artificial rains is
The chemical used in developing photographic films is
The chief constituent of gobar gas is
The chief constituent of vinegar is
The chief source of naphthalene is
The coating of a thin layer of zinc on steel or iron objects is known as
The coloured discharge tubes for advertisement mainly contain