This set of Unit Processes Multiple Choice Questions & Answers (MCQs) focuses on “Aminating Agents and Hydrocarbon”.
1. 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
Explanation: Ammonia reacts catalytically with methane (natural gas) in the presence of a regulated amount of oxygen to form hydrogen cyanide.
2. Cyanamide solutions get polymerised by what?
a) Slightly acid
b) Slightly Alkaline
c) Both of the mentioned
d) None of the mentioned
View Answer
Explanation: Cyanamide solutions are stable when slightly acid and are polymerized when slightly alkaline.
3. 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
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. 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
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. What all gases do we get from natural gas?
a) Hydrogen
b) Acetylene
c) Synthesis gas
d) All of the mentioned
View Answer
Explanation: Natural gas has become an important starting material for the manufacture of hydrogen, acetylene, and synthesis gas for producing methanol.
6. 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
Explanation: The addition of HCN to acetylene yields the required acrylonitrile.
7. 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
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. 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
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. In which reaction Sulfuric acid salts acts as a catalyst?
a) Addition reaction
b) Bucherer reaction
c) Replacement reaction
d) Acidic reaction
View Answer
Explanation: When we convert Naphthols to Naphthylamines, we use sulfuric acid salts as catalyst and hence it is called Bucherer reaction.
10. The conversion of Naphthols to Naphthylamine is not a reversible reaction.
a) True
b) False
View Answer
Explanation: The reaction is reversible and hence permits the conversion of naphthylamines to naphthols.
Sanfoundry Global Education & Learning Series – Unit Processes.
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