This set of Unit Processes Multiple Choice Questions & Answers focuses on “Technical manufacturing of amino compound – 2”.
1. In the reaction of 2-Aminoanthraquinone from 2-Chloroanthraquinone what oxidants do we use?
a) Potassium chlorate
b) Nitric acid
c) Halogen
d) All of the mentioned
View Answer
Explanation: In the reaction of 2-Aminoanthraquinone from 2- Chloroanthraquinone, by the use of potassium chlorate and ammonium nitrate as oxidants, it is possible to obtain directly a 2-aminoanthraquinone of 97.5-98.5 per cent purity.
2. The preparation of p-Nitroaniline in Jacketed Autoclaves is done in which reactor?
a) Continuous
b) Batch
c) Semibatch
d) Tubular
View Answer
Explanation: The preparation of p-Nitroaniline in done in batch reactor.
3. What does magma consists of?
a) Aluminium
b) Nitroaniline
c) Aniline
d) All of the mentioned
View Answer
Explanation: The magma consist of finely divided nitroaniline and ammonium chloride solution.
4. What does CK stand for in continuous production of nitroaniline?
a) Cooling vessel
b) Agitated vessel
c) Both of the mentioned
d) None of the mentioned
View Answer
Explanation: In continuous production of nitroaniline, CK stands for water-cooled agitated vessel.
5. Sodium Anthraquinone-2-sulfonate on amination produces what?
a) 2-Aminoanthraquinone
b) 3-Aminoanthraquinone
c) 2-anthraquinone
d) 2-Aminequinone
View Answer
Explanation: Sodium Anthraquinone-2-sulfonate on amination in presence of oxidant produces 2-Aminoanthraquinone.
6. Sodium Anthraquinone-2-sulfonate is also called what?
a) Zinc salt
b) Silver salt
c) Iron salt
d) Potassium salt
View Answer
Explanation: The preparation of 2-aminoanthraquinone from “silver” salt i.e. Sodium Anthraquinone-2-sulfonate.
7. What is the yield of the production of 2-aminoanthraquinone?
a) 70-80
b) 80-90
c) 90-100
d) None of the mentioned
View Answer
Explanation: The 2-aminoanthraquinone obtained by this process generally averages 99 per cent pure, by titration with sodium nitrite. The yields range from 90-94 per cent of the theoretical.
8. What product(s) do we get on reaction of methanol with ammonia?
a) Trimethylamines
b) Dimethylamines
c) Monomethylamines
d) All of the mentioned
View Answer
Explanation: Mono-, di-, and trimethylamines are obtained by the reaction of methanol with ammonia under a pressure of 50 atm at about 380-450°C, over an aluminium oxide catalyst.
9. Trimethylamines form an azeotrope in the above reaction.
a) True
b) False
View Answer
Explanation: Trimethylamine forms a binary azeotrope not only with NH3, but with mono- and dimethylamines as well, and that mono- and dimethylamine mixtures, boiling about 14°C apart, can be conveniently separated by fractional distillation.
10. The solubility is only influenced by solvent.
a) True
b) False
View Answer
Explanation: Solubility is influenced not only by the solvent, but by the different basicities of the amines.
11. What is meant by TMMD?
a) Trimethylmethylenediamine
b) Tetramethylmethylenediamine
c) Trimethydiamine
d) None of the mentioned
View Answer
Explanation: The full form of TMMD is Tetramethylmethylenediamine.
12. Hydroammonolysis of Acetone yield a mixture of products.
a) True
b) False
View Answer
Explanation: Hydroammonolysis of Acetone thus yields a mixture of mono-, di-, and triisopropylamines.
13. Which reactants are best for the industrial preparation of amines by the ammonolysis?
a) Aromatic
b) Halides
c) Alcohols
d) All of the mentioned
View Answer
Explanation: The successful industrial preparation of amines by the ammonolysis of aromatic halides, alcohols, and sulfonic acids depends largely upon the proper functioning of the ammonia system.
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