Engineering Questions with Answers - Multiple Choice Questions
Unit Processes MCQ’s – Materials Susceptible to Hydrolysis
1 - Question
The addition of water to acetylene produces what?
a) Acetaldehyde
b) Acetic acid
c) Both acetaldehyde and acetic acid
d) None of the mentioned
View Answer
Explanation: The addition of water to acetylene produces acetaldehyde.
2 - Question
Cellulose is hydrolysed to produce what?
a) Invertase
b) Maltose
c) Glucose
d) All of the mentioned
View Answer
Explanation: Cellulose is hydrolysed to glucose by acids and to cellobiose by its own specific enzyme cellulase.
3 - Question
Starch is hydrolysed into what?
a) Glucose
b) Maltose
c) Both glucose and maltose
d) None of the mentioned
View Answer
Explanation: Enzymes and dilute acids hydrolyse starch ii1to maltose and glucose, whereas inulin yields only fructose by this treatment.
4 - Question
Organic esters hydrolysis with which compound?
a) Acids
b) Base
c) Enzymes
d) All of the mentioned
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Explanation: Organic esters of all kinds, including the esters of carbohydrates, are quite subject to hydrolysis with acids, bases, and, in many cases, enzymes.
5 - Question
Hydrolysis of esters is irreversible.
a) True
b) False
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Explanation: Hydrolysis of esters is reversible, unlike that of the carbohydrates, so that the equilibrium point may be approached from both sides.
6 - Question
Which of the following is an esters of inorganic acids?
a) Methyl sulphates
b) Alkyl phosphates
c) Glyceryl nitrate
d) All of the mentioned
View Answer
Explanation: The esters of inorganic acids, ethyl and methyl sulphates, ethyl hydrogen: sulphate, the alkyl phosphates, glyceryl nitrate, etc., may all be hydrolysed, generally speaking, by acids and bases.
7 - Question
Which of the following compounds react readily with water alone?
a) Acid halides
b) Alkyl compounds
c) Aryl compounds
d) All of the mentioned
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Explanation: The acid halides, like acetyl chloride, reacting readily with water alone, whereas varying degrees of resistance are shown by the alkyl and aryl compounds.
8 - Question
The aromatic halides are much easier to hydrolyse.
a) True
b) False
View Answer
Explanation: The aromatic halides are much more difficult to hydrolyse, acids on the other hand are easy to hydrolyse.
9 - Question
Which nitrogen compound can resist hydrolysis?
a) Aromatic
b) Aliphatic
c) Both aromatic and aliphatic
d) None of the mentioned
View Answer
Explanation: Aliphatic and aromatic amines-ethylamine and aniline-resist hydrolysis even under extreme conditions, though the production of a-naphthol from a-naphthyl amine under pressure is recorded.
10 - Question
Benzene sulfonic acid in presence of what produces sulphuric acid and benzene?
a) Enzyme
b) Steam
c) Acid
d) None of the mentioned
View Answer
Explanation: Benzene sulfonic acid, when treated with steam under pressure, yields benzene and sulfuric acid.