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Question
_____________ is the purest variety of coal, it has 92%−98% of carbon content. It is difficult to ignite them but once ignited, it burns for a long time and large amount of heat is liberated.
_____________ is the purest variety of coal, it has 92%−98% of carbon content. It is difficult to ignite them but once ignited, it burns for a long time and large amount of heat is liberated.
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Solution
The correct option is D Anthracite
Anthracite is the purest variety of coal. This is the oldest stage in the formation of coal, with 92%−98% of carbon content. Anthracite is dense, hard and black. It is highly difficult to ignite them, but once ignited it burns for long time and liberates a large amount of heat. The other varities of coal such as bituminous, peat and lignite are obtained in different stages of coal formation.
Anthracite is the purest variety of coal. This is the oldest stage in the formation of coal, with 92%−98% of carbon content. Anthracite is dense, hard and black. It is highly difficult to ignite them, but once ignited it burns for long time and liberates a large amount of heat. The other varities of coal such as bituminous, peat and lignite are obtained in different stages of coal formation.
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