Write one example each for fossil fuels in solid and liquid state
Which fossil fuel produces ammonia when distilled in the absence of air.

Which one is being tried in india as biofuel substitute for fossil fuels?

Write one example for each: a. A metal which is so soft that, it can be cut with knife and non metal which is the hardest substance. b. A metal and non metal which exist as liquid at room temperature.

Which one of the following is not a fossil fuel ?

Burning of fossil fuels affects one of the folowing cycles in nature

Explain how does burning of fossil fuels causes air and soil pollution

Why should fossil fuels be used judiciously? Write any two reasons.