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प्रश्न
Coal is formed from the remains of
पर्याय
vegetation only
animals only
both vegetation and animals
neither vegetation nor animals
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उत्तर
vegetation only
Explanation:
Coal is formed by the decomposition of large land plants and trees buried under the earth about 300 million years ago.
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संबंधित प्रश्न
Describe how coal is formed from dead vegetation. What is this process called?
Describe characteristics of coke.
Coal tar is a mixture of various substances.
Explain the different types of coal.
When heated in air, coal burns and produces mainly ______ gas.
Coal tar is a black, thick ______ with an ______ smell.
Write True/False against the following statement.
Under high temperature and pressure, dead plants get slowly converted to coal.
When lignite becomes darker and harder over time ______ coal is formed.
Activated carbon, used in filters for water and air purification and in ______ machines is obtained from coal.
Coal helps to create alumina refineries.
