[A]Sodium or potassium salts of heavier fatty acids
[B]Mixture of glycerol and alcohol
[C]Esters of heavy fatty acids
[D]Salts of silicates
2. Deep blue colour is imparted to glass by the presence of ____________________.
3. The vast resources of unutilised natural gas can be used in the production of ___________________.
4. Paper is manufactured by ____________________________.
[A]Wood and bleaching powder
[B]Wood and resin
[C]Wood, sodium and bleaching powder
[D]Wood, calcium, hydrogen sulphite and resin
5. One fathom is equal to ___________________.