9. Viscose rayon is chemically
A : cellulose nitrate
B : regenerated cellulose nitrate
C : cellulose acetate
D : regenerated cellulose acetate
10. The gasification reaction represented by, C + H 2 O = CO + H 2 , is a/an __________ reaction.
1. __________ process is used for the manufacture of sodium carbonate by ammonia soda process.
2. Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.