Evaporators used in caustic soda recovery and production plant are made of_______________?

A. High alumina ceramic
B. Metallic carbides
C. Corundum
D. Carborundum

A. Plastics
B. Crystalline solid
C. Non-crystalline solids
D. Non-crystalline organic polymer

A. Sulphuric acid (10%)
B. Sea water
C. Hydrochloric acid
D. None of these

A. Nodular cast iron
B. Pig iron
C. White cast iron
D. Grey cast iron

A. Spraying
B. Powder metallurgy
C. Hot dipg
D. Electro-deposition