Geography
Which types of resources of energy are coal, petroleum and natural gas?
- conventional sources
- non-renewable sources
- non-conventional sources
- Both (a) and (b).
Related Questions
Coal is a …………… solid stratified rock of organic and mineral matter.
- combustible
- non-combustible
- renewable
- None of the above.
…………… coal has …………… per cent of carbon content and is the most preferred variety of coal.
- Lignite, 40
- Peat, 50
- Anthracite, 90
- Bituminous, 80
Bituminous coal is also known as …………… .
- coking coal
- Peat
- Steam oven
- Gas stove
Anthracite is ideal for domestic use as it is smokeless and has high …………… value.
- industrial
- calorific
- volatile
- demand