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प्रश्न
Coal tar is a black, thick ______ with an ______ smell.
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उत्तर
Coal tar is a black, thick liquid with an unpleasant smell.
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संबंधित प्रश्न
Fossil fuels are ______, ______ and ______.
Coke is almost pure form of carbon.
Explain why fossil fuels are exhaustible natural resources.
What are the different types of coal?
Which substance is formed by the carbonisation of dead vegetation?
During the processing of coal to get coke, coal tar and ______ are also obtained.
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?
Which one among the following is an extremely strong but lightweight material is used in mountain bikes and tennis rackets?
Coal is also known as black diamond owing to its precious nature.
What is deep mining?
