Engineering Questions with Answers - Multiple Choice Questions
Unit Processes MCQ’s – Equipments for Hydrolysis
1 - Question
Which acid require serious consideration under acid hydrolysis?
a) Nitric acid
b) Sulphuric acid
c) Both HNO3 and H2SO4
d) None of the mentioned
View Answer
Explanation: Only two acids-sulfuric and hydrochloric-require serious consideration under acid hydrolysis.
2 - Question
Which is the most corrosive acid?
a) Sulphuric acid
b) Nitric acid
c) Hydrochloric acid
d) None of the mentioned
View Answer
Explanation: Hydrochloric acid as a hydrolyser and as a product of hydrolysis in the absence of alkali has been the source of much trouble as it is one of the most corrosive chemicals known.
3 - Question
Which of the following acts as a resistant against HCl?
a) Nickel
b) Aluminium bronze
c) Manganese bronze
d) All of the mentioned
View Answer
Explanation: Nickel and Monel metal are fairly resistant to low hydrochloric acid concentrations. With dilute acid, several of the copper-base alloys, such as phosphor bronze, aluminium bronze, manganese bronze, and Everdur metal, have fairly good resistance and can often be used in applications where corrosion can be offset by a heavy wall thickness.
4 - Question
Which of the following is an excellent non-metallic resistance to hydrochloric acid?
a) Rubber
b) Fused silica
c) Proflex
d) All the mentioned
View Answer
Explanation: Many non-metallic materials of construction, such as rubber, stoneware, fused silica, glass, and plastic materials such as Tygon and Proflex, have excellent resistance to hydrochloric acid.
5 - Question
It is difficulty to handling wet hydrochloric acid gas.
a) True
b) False
View Answer
Explanation: The difficulty of handling wet hydrochloric acid gas has been one of the retarding factors in the development of vapour-phase hydrolysis of organic halides, but the use of tantalum is finding favour in continuous processes involving large production.
6 - Question
Hydrochloric acid as what in absence of alkali?
a) Positive ion
b) Hydrolyser
c) Both positive ion and hydrolyser
d) None of the mentioned
View Answer
Explanation: Hydrochloric acid as a hydrolyser and as a product of hydrolysis in the absence of alkali has been the source of much trouble as it is one of the most corrosive chemicals known.
7 - Question
Which processes can be carried out in iron vessels?
a) Halogenated processes
b) Amide
c) Alkaline processes
d) All of the mentioned
View Answer
Explanation: Alkaline processes have, in general, the great advantage that, with rare exceptions, and they may be carried out in iron or steel vessels.
8 - Question
Which of the following is glycerol esters of fatty acids?
a) Halogenated
b) Sucrose
c) Oils
d) All of the mentioned
View Answer
Explanation: Oils and fats are glycerol esters of fatty acids, similar and dissimilar, saturated and unsaturated.