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Sodium
Calcium
Magnesium
Potassium
Bleaching powder is prepared by passing:
Bleaching powder is used in drinking water as a/an
Blister copper is
Bohr model can explain about
Bohrs theory of fixed orbits contradicts
Brass gets discolored in air because of the presence of which of the following gases in air?
Brass gets discoloured in air due to constant exposure in presence of:
Bronze is an alloy of
Cadmium rods are used in a nuclear reactor
Calcium salts used as fertilizer is: