Question

name gas which is formed when coal is heated in absence of air

Answer 1

Gas that is formed when coal is heated in the absence of air is COAL GAS.

Explanation:

Coal:

• Coal is the earliest used fossil fuel.
• It is hard and black in colour.
• It is a highly combustible substance.
• It is the main source of energy in India.

• Coal is heated strongly at about 100°C in the absence of air in the destructive distillation.
• Valuable products like coke, coal tar, coal gas, and Ammonical liquor are obtained during the destructive distillation process.

Types of coal :

• Anthracite
• Bituminous
• Lignite
• Peat

Coal gas:

• It is a mixture of hydrogen (H), methane (CH), and carbon monoxide (CO).
• It has a high calorific value.
• It is used as a gaseous fuel in industries, as an illuminating agent, for gas lighting, and in camping on outdoor activities.

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Answer 2

Answer:

mainly hydrogen, methane, and carbon monoxide

Explanation:

coal gas, gaseous mixture—mainly hydrogen, methane, and carbon monoxide—formed by the destructive distillation (i.e., heating in the absence of air)