a. Write about the physical appearance of coal.
b. Write the names of different types of coal.

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Solution

a. Coal looks like a black hard stone in appearance which breaks into smaller pieces when subjected to pressure as it is brittle.

b. Different types of coal are:

Peat

Lignite

BItuminous

Anthracite

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Various types of coals are obtained from mining. Name the type of coal which has the highest carbon content.

(a) Describe the formation of coal.

(b) Name four types of coal with the percentage of carbon present in each.

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