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

Question : 11 [PSC (Pre) 2019]

Organic food is supposed to be better for us because it

a) is more expensive to buy

b) is grown in glasshouses keeping it clean of environmental pollutants

c) relies on chemicals to improve the flavour

d) is grown without the use of artificial fertilizers and pesticides

Question : 12 [UPPCS (Pre) 2011]

Indane gas is a mixture of

a) Butane and Propane

b) Butane and Hydrogen

c) Butane and Oxygen

d) Methane and Oxygen

Question : 13 [UPPCS (Pre) 2015]

CNG is

a) Condensed Nitrogen Gas

b) Compressed Natural Gas

c) Cyanogen Natural Gas

d) Controlled Natural Gas

Question : 14 [PSC (Pre) 2019]

Which of the following is a common refrigerant used in the domestic refrigerator?

a) Oxygen

b) Freon

c) Neon

d) None of these

Question : 15 [BPSC (Pre) 2016]

Soap removes grease by

a) Adsorption

b) Emulsification

c) Coagulation

d) Osmosis