Question

# Power alcohol is a mixture of

A

$80%$ petrol + $20%$ benzene + small quantity of ethanol

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B

$80%$ petrol + $20%$ ethanol + small quantity of benzene

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C

$80%$ ethanol + $20%$ benzene + small quantity of petrol

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D

$50%$ petrol + $50%$ ethanol + small quantity of benzene

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Solution

## The correct option is B $80%$ petrol + $20%$ ethanol + small quantity of benzeneExplanation for Correct Answer:Option (B) $80%$ petrol + $20%$ ethanol + small quantity of benzenePower alcohol is a liquid mixture that contains $80%$ petrol, $20%$ Ethanol, and a small amount of benzene. Power alcohol is used in the field of automobiles in order to generate energy for various operations.It is also used as a vehicle fuel and is cheaper than petroleum.It has good anti-knocking properties and its an octane number of 90.Ethanol can be easily prepared by fermentation or other similar techniques. It is also produced as a by-product in a lot of reactions. Since the power alcohol contains oxygen atoms, it aids the full burning of gasoline in the engine and prevents the formation of hazardous $\mathrm{CO}$ gas.Hence, option (B) $80%$ petrol + $20%$ ethanol + small quantity of benzene is correct.

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