Engineering Questions with Answers - Multiple Choice Questions

Unit Processes MCQ’s – Aminating Agents and Hydrocarbon

1 - Question

Ammonia reacts with methane (natural gas) to form what?
a) Aliphatic nitriles
b) Aromatic nitriles
c) Hydrogen cyanide
d) None of the mentioned
View Answer Answer: c
Explanation: Ammonia reacts catalytically with methane (natural gas) in the presence of a regulated amount of oxygen to form hydrogen cyanide.

2 - Question

Cyanamide solutions get polymerised by what?
a) Slightly acid
b) Slightly Alkaline
c) Both of the mentioned
d) None of the mentioned
View Answer Answer: b
Explanation: Cyanamide solutions are stable when slightly acid and are polymerized when slightly alkaline.

3 - Question

In Toluene and Ammonia reaction, which of the following is considered?
a) Reactant ratio
b) Liquid space velocity
c) Temperature range
d) All of the mentioned
View Answer Answer: d
Explanation: Toluene and ammonia, at various reactant ratios and liquid space velocities, are passed at atmospheric pressure over a supported molybdenum trioxide catalyst at about 525-550°C. The conversion per pass is 5-10 per cent, and the yields are 60-85 per cent based on the toluene consumed.

4 - Question

What is the other name of nitriles of formic acid?
a) Hydrocyanic acid
b) Hydromantic acid
c) Hydrochloric acid
d) Hydro sulphuric acid
View Answer Answer: a
Explanation: Hydrocyanic acid, the nitrile of formic acid, is a very important product which can be produced catalytically from methane (natural gas), ammonia, and air, using noble metal or noble-metal alloy catalysts.

5 - Question

What all gases do we get from natural gas?
a) Hydrogen
b) Acetylene
c) Synthesis gas
d) All of the mentioned
View Answer Answer: d
Explanation: Natural gas has become an important starting material for the manufacture of hydrogen, acetylene, and synthesis gas for producing methanol.

6 - Question

What product do you get on addition of HCN and Acetylene?
a) Alkyl nitrile
b) Acrylo nitrile
c) Hydronitrile
d) None of the mentioned
View Answer Answer: b.
Explanation: The addition of HCN to acetylene yields the required acrylonitrile.

7 - Question

The reaction of phenol and NH3 takes place in presence of what?
a) FeCL3
b) AL (OH)3
c) Fe (OH)2
d) All of the mentioned
View Answer Answer: d
Explanation: Aniline and some diphenylamine are formed when phenol and NH3 solution are heated under pressure in the presence of FeCl3, AI (OH)3, or Fe(OH)2.

8 - Question

How much amount of yield is produced when NH3 and phenil reacts on Al2O3 catalyst?
a) 50%
b) 68%
c) 88%
d) 98%
View Answer Answer: c
Explanation: When NH3 and phenol or ortho-or para-cresols are reacted in the vapour phase over an Al2O3 catalyst, yields of up to 88 per cent of amines are obtained

9 - Question

In which reaction Sulfuric acid salts acts as a catalyst?
a) Addition reaction
b) Bucherer reaction
c) Replacement reaction
d) Acidic reaction
View Answer Answer: b.
Explanation: When we convert Naphthols to Naphthylamines, we use sulfuric acid salts as catalyst and hence it is called Bucherer reaction.

10 - Question

The conversion of Naphthols to Naphthylamine is not a reversible reaction.
a) True
b) False
View Answer Answer: b
Explanation: The reaction is reversible and hence permits the conversion of naphthylamines to naphthols.

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