Question

Power alcohol is:
A) Absolute alcohol: Petrol (20:80)
B) Absolute alcohol: Petrol (80:20)
C) Rectified Spirit: benzene spirit (20:80)
D) Rectified Spirit: benzene spirit (80:20)

Answer 1

Hint: Power alcohol is a liquid mixture containing petrol, ethanol and a small amount of benzene. It is used for the generation of power. Power alcohol is used as a fuel in the internal combustion engine.

Complete answer:
Power alcohol is a mixture of liquid. The use of ethyl alcohol in the petrol reduces the dependence for petrol on foreign countries. Power alcohol has a much higher-octane value than petrol. Power alcohol gives boost to farmers and indigenous manufacturers of ethyl alcohol get better price of their grain produce. It is a liquid mixture that contains 80 % petrol, 20 % ethanol and a small amount of benzene.
Mixture of alcohol and petrol in 20: 80 is called power alcohol. It is used in stoves, spirit lamps and useful in the field of automobiles to generate energy for its operations.

Thus, the correct answer is A. i.e. Absolute alcohol: Petrol (20:80).

Additional Information: It has property of absorbing any traces of water if present in petrol. Use of ethyl alcohol in petrol reduces our dependence on foreign countries for petrol and saves foreign currency considerably. Power alcohol is cheaper than petrol.

Note: Generally, ethyl alcohol is used as a 5-25 % mixture with petrol. 5% ethyl alcohol blends in petrol that saves our foreign reserves by about Rs. 5000 crores per annum. Ethyl alcohol is mainly manufactured by fermentation of molasses, starch, carbohydrates and can also be obtained from synthesis gas. The ethyl alcohol that is obtained contains 95.5 % alcohol & 4.5 % water.