Question

If you could use any source of energy for heating your food, which one would you use and why?

• A. methane
• B. natural gas
• C. petrol
• D. none

Answer 1

The correct option is B

natural gas

Explanation of correct option

Option B,

Natural gas is used because:

1. It is cleaner than the other fuels since it emits very less by-products from burning.
2. It is economical.
3. It is relatively safe, since it is lighter than air, even if it leaks, it dissipates quickly into the air.
4. It is easily available.
5. Since it almost burns completely, it is more efficient as compared to the other gases.

Explanation of incorrect options

Option A,

1. Methane can be used for cooking.
2. But natural gas is preferred over methane as it is a major contributor to global warming.
3. And is very dangerous to the human body if inhaled.
4. Also, it is highly explosive.

Option C,

1. Petrol is not used for cooking because it is very inflammable.
2. It has a low ignition temperature and hence burns easily causing danger in households.

Therefore, option B is correct