What does it means by fuel efficiency? Which of the following fuels have highest and lowest fuel efficiency? Dry wood, coal, petrol, hydrogen gas.

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Solution

1. The proportion of energy released by a fuel during combustion process which is converted into useful work is called as its fuel efficiency.

2. Highest fuel efficiency is of hydrogen gas and lowest fuel efficiency is of coal.

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What does it means by fuel efficiency? Which of the following fuels have highest and lowest fuel efficiency? Dry wood, coal, petrol, hydrogen gas.

1. ​The proportion of energy released by a fuel during combustion process which is converted into useful work is called as its fuel efficiency. 2. Highest fuel efficiency is of hydrogen gas and lowest fuel efficiency is of coal.

1. The proportion of energy released by a fuel during combustion process which is converted into useful work is called as its fuel efficiency.

2. Highest fuel efficiency is of hydrogen gas and lowest fuel efficiency is of coal.