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Calcium oxide and ammonium chloride
Ammonium sulphate and sodium carbonate
Aragonite and conchiolin
Calcium carbonate and magnesium carbonate
The main function of white blood cells in the body is to
The main use of magnesia is as a / an
The major constituent of gobar gas is
The major contributor to global warming is
The major harmful gas emitted by automobile vehicles which causes air pollution is
The major ingredient of leather is:
The major use of sulphur is in the manufacture of
The male sex hormone is
The mammal that lays eggs is
The manufacturing of iron from ironore involves the process of