Question

Choose the correct statement from the following.
A good fuel is one which:

• A. is readily available
• B. produces a large amount of heat
• C. leaves behind many undesirable substances
• D. burns easily in air at a moderate rate

Answer 1

Answer: (A), (B), (D)

The correct options are
A is readily available
B burns easily in air at a moderate rate
D produces a large amount of heat

Good fuel should have following properties:

1) Readily available with low cost

2) Large calorific value

3) Moderate ignition temperature

4) Low moisture content

5) Low ash content

6) Burns in air at a moderate rate (moderate velocity of combustion)

7) Easily storage and transportable

8) Should not product harmful products.

It should not leaves behind many undesirable substances.

Hence, option A, B and D are correct.