Building Materials
Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as

Mottled pig
White or forge pig
Grey or foundry pig
Bessemer pig

ANSWER DOWNLOAD EXAMIANS APP

Building Materials
In the method of condensation polymerization,

The reaction proceeds with an evolution of ammonia
Low-molecular substances are removed from the high molecular substance
The reaction proceeds with an evolution of hydrogen chloride
All of these

ANSWER DOWNLOAD EXAMIANS APP