Question

Under extreme conditions, anthracite can change into:

coke
peat
graphite
lignite​

Answer 1

Under extreme conditions, anthracite can change into graphite.

Option (c) is correct.

Explanation:

• Anthracite is one of the four main types of coal. a
• It is the hardest form of coal and contains high content of carbon.
• Due to the high content of carbon it is the most energy containing coal.
• Under extreme conditions such as high temperature and pressure, anthracite can change into graphite.
• It is a transition stage between coal.