FIB : Natural gas contains ____ % CH4

Question

Fill in the blanks :

1. Natural gas contains ____ % CH₄.
2. Forest wood is a ____ source of energy.
3. The main constituent of gobar-gas is ____.
4. Wind farms are located in ____ regions.

Answer

1. Natural gas contains 70-90% CH₄.
2. Forest wood is a renewable source of energy.
3. The main constituent of gobar gas is methane (CH₄).
4. Wind farms are located in windy regions.