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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
Coke is almost pure form of carbon.
Coal is processed in industries to get some useful products. Which of the following is not obtained from coal?
Which substance is formed by the carbonisation of dead vegetation?
The underlined word in the following sentence have been jumbled up. Write them in their correct form.
Loca is obtained from mines.
Write the characteristics and some important uses of coal.
Coal reserves are said to be enough to last for another hundred years. Do you think we need to worry in such case? Why or why not?
Coal helps to create alumina refineries.
Coke is used in the preparation of dyes, explosives, paints synthetic fibers, and pesticides.
Coal is also known as black diamond owing to its precious nature.
What is deep mining?
