Minerals are natural substances having definite chemical and …………….. properties.

1. organic
2. physical
3. biological
4. Both (1) and (2).

Assertion (A): Iron ore forms the backbone of modern civilisation.

Reason (R): The iron ore deposits in India occur as hill masses and are easily accessible.

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 one of the most widely distributed minerals found in the earth's crust.

1. Iron ore
2. Copper
3. Coal
4. Limestone

Which ore of iron is reddish in colour?

1. Magnetite
2. Haematite
3. Limonite
4. All of the above.