Quality and quantity of minerals are inversely related. This means good quality minerals are …………… in quantity than low quality minerals.

1. equal
2. lesser
3. higher
4. Both (2) and (3)

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.

Which ore of iron is reddish in colour?

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

What is also known as 'Black ore'?

1. Limonite
2. Haematite
3. Magnetite
4. None of the above.