Chemical Process MCQs

Question 1

Saponification value/number of an oil or fat is a measure of its

Accepted Answer

Average molecular weight

Answer

Fatty acid content

Answer

Degree of unsaturation of the fatty acids present in it

Answer

Insoluble fatty acid content

Question 2

High acid value of an oil or fat is an indication of

Accepted Answer

Storage under improper conditions

Answer

Absence of unsaturation

Answer

Its smaller molecular weight

Answer

None of these

Question 3

Oleum produces fumes of

Accepted Answer

SO3

Answer

SO2

Answer

H2SO4

Answer

SO2 + H2SO4

Question 4

Dry ice (solidified CO2) is used for the

Accepted Answer

Storage & shipment of frozen foods and ice-creams

Answer

Liquefaction of permanent gases

Answer

Liquefaction of natural gas

Answer

None of these

Question 5

Which one of the following is not an elastomer?

Accepted Answer

None of these

Answer

Polyisoperene

Answer

Neoprene

Answer

Nitrile-butadiene

Question 6

Unsaturated oils compared to saturated oils have

Accepted Answer

Lower melting point & higher reactivity to oxygen

Answer

Higher melting point & higher reactivity to oxygen

Answer

Lower melting point & lower reactivity to oxygen

Answer

Higher melting point & lower reactivity to oxygen

Question 7

Superior quality laboratory apparatus is made of the __________ glass having low thermal co-efficient of expansion & high chemical resistance.

Accepted Answer

Pyrex

Answer

Flint

Answer

Soda

Answer

Potash

Question 8

DDT should not be allowed to come in contact with iron (during its manufacture) to

Accepted Answer

Avoid its decomposition

Answer

Prevent sulphonation of the monochlorobenzene by the acid catalyst

Answer

Achieve non-hygroscopic property

Answer

None of these

Question 9

__________ iron is the purest form of iron.

Accepted Answer

Wrought

Answer

Cast

Answer

Pig

Answer

High silicon