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Nitrogen
Carbon dioxide
Hydrogen Sulphide
Oxygen
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:
Candle is a mixture of
Carbon dioxide is
Cement containing excess amount of lime
Cement is formed by strongly heating a mixture of
Cement is usually a mixture of:
Chemical composition of heavy water is: