Question

B) WRITE VERY SHORT ANSWER TYPE QUESTION
5) i) How is coal formed in nature.
ii) How can we conserve fossil fuels?
6) Why does a phuljhari (sparking light) require some heating before it sparks?
7) Why is nylon used for making bristles of toothbrushes?
8) What is the role of leveler in the preparation of soil?
9) How does the bacterium help in curd formation​

Answer 1

Answer:

5(a)Plants and other life forms, after their death, drifted down to the bottom of the swamps, where they were compressed and decomposed to form peat. Coal was formed due to the compression of the peat at high temperature and pressure. As coal was formed from the remains of vegetation, it is also called a fossil fuel.