Assertion (A): Mineral based industry forms the backbone of industrial development.

Reason (R): It provides raw material for industrial and consumer goods as well as infrastructure.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

Iron is galvanised by using chromium, …………… and tungsten.

1. copper
2. silica
3. carbon
4. nickel

Assertion (A): Rourkela Steel Plant produces raw material used in the manufacture of fertilizers.

Reason (R): It produces a large quantity of nitrogen as a by-product.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

…………… is the largest steel making company in India in the Public sector.

1. Steel Production Unit of India.
2. Steel Manufacturing Unit of India.
3. Steel Company of India.
4. Steel Authority of India.