Question

Why a small amount of gasoline is added to alcohol?

(a) To reduce the emission

(b) To increase the power output

(c) To increase the power efficiency

(d) To improve cold-weather starting

I had been asked this question at a job interview.

The query is from Alternative Fuels for IC Engines in portion Alternative Energy Sources of Automobile Engineering

Answer 1

Correct answer is (d) To improve cold-weather starting

The explanation is: When a small amount of gasoline is added to alcohol, it improves cold-weather starting. Alcohols have low energy content. This means that almost twice as much alcohol as gasoline must be burned to give the same energy input.