fuel, food preservation, nutrition, medicine, detergents and fertilizers - Category wise Question and Answer Practice Test with Solutions

Question : 16 [PSC (Pre) 2015]

Refrigeration helps in food preservation by

a) Reducing the rate of biochemical reactions

b) Destroying enzyme action

c) Killing the germs

d) Sealing the food with a layer of ice

Question : 17 [Uttarakhand Lower Sub. (Pre) 2010]

In what form cooking gas is supplied in cylinders?

a) Solid

b) Liquid

c) Gas

d) Solution

Question : 18 [UPPSC (GIC) 2010]

The main component of Gobar Gas is

a) Propane

b) Methane

c) Ethane

d) Chlorine

Question : 19 [UPPCS (Mains) 2007]

The element not present in fertilizers is

a) Chlorine

b) Nitrogen

c) Hydrogen

d) Phosphorus

Question : 20 [UPPCS (Mains) 2013]

The main component of Liquid Petroleum Gas (LPG) are

a) Ethane, Propane and Butane

b) Methane, Ethane and Hexane

c) Methane, Pentane and Hexane

d) Methane, Carbon Monoxide and Hydrogen