Coal

From where is coal obtained?

The characteristic of coal is _____.

Dead plants are slowly converted to coal when subjected to high temperatures and pressure.

Coal gas is a product of the destructive distillation of bituminous coal.

Coal gas is a mixture of hydrogen, methane and _____:

Coal tar is almost _____ in water.

Coal tar is a hard black solid obtained from coal.

Which is not a physical property of coal tar?

Write any two physical properties of coal tar.

Which of the following is not a reason for burial of a large number of forests:

A large number of forests got buried due to natural calamities.

Explain briefly how did a large number of forests got buried to form coal.

Did the burial of forests lead to the formation of coal? Explain briefly.

Pitch lake and oil sand are the natural sources of bitumen.

Bitumen is used as an alternative for coal tar.

What are the sources of bitumen?

Which of the following is used as an alternative for coal tar?

Write the uses of bitumen.

Coke is grey, hard, and _____ fuel with high carbon content.

Coke is soft in nature.