Anthracite is ideal for domestic use as it is …………….

1. smokeless
2. high calorific value
3. high carbon content
4. All of them.

Name the brown low grade coal.

1. Peat
2. Lignite
3. Anthracite
4. Bituminous

Gondwana coal has variable quantities of …………… .

1. Low moisture
2. Small sulphur
3. Small variable quantity of phosphorus
4. All of them.

Assertion (A): Hydel power is the cheapest form of renewable energy.

Reason (R): Once the project is operational it does not produce waste or green house gases.

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.