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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

What is meant by TMMD?(a) Trimethylmethylenediamine(b) Tetramethylmethylenediamine(c) Trimethydiamine(d) None of the mentionedI got this question during an online interview.This interesting question is from Technical Manufacturing of Amino Compound topic in chapter Amination by Ammonolysis of Unit Processes

Answer» RIGHT choice is (b) TETRAMETHYLMETHYLENEDIAMINE

For explanation: The FULL form of TMMD is Tetramethylmethylenediamine.
2.

Hydroammonolysis of Acetone yield a mixture of products.(a) True(b) FalseThis question was posed to me in examination.This is a very interesting question from Technical Manufacturing of Amino Compound in division Amination by Ammonolysis of Unit Processes

Answer»

Correct option is (a) True

Explanation: Hydroammonolysis of ACETONE thus yields a MIXTURE of MONO-, di-, and triisopropylamines.

3.

Trimethylamines form an azeotrope in the above reaction.(a) True(b) FalseI have been asked this question in an internship interview.The question is from Technical Manufacturing of Amino Compound topic in portion Amination by Ammonolysis of Unit Processes

Answer» RIGHT OPTION is (a) True

For explanation I would say: 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.
4.

The solubility is only influenced by solvent.(a) True(b) FalseI had been asked this question during an interview.This interesting question is from Technical Manufacturing of Amino Compound topic in portion Amination by Ammonolysis of Unit Processes

Answer»

The CORRECT answer is (B) False

Easiest explanation: SOLUBILITY is influenced not only by the solvent, but by the different BASICITIES of the AMINES.

5.

What product(s) do we get on reaction of methanol with ammonia?(a) Trimethylamines(b) Dimethylamines(c) Monomethylamines(d) All of the mentionedI had been asked this question by my school principal while I was bunking the class.My question comes from Technical Manufacturing of Amino Compound topic in division Amination by Ammonolysis of Unit Processes

Answer» CORRECT choice is (d) All of the mentioned

To explain I WOULD SAY: 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.
6.

Sodium Anthraquinone-2-sulfonate is also called what?(a) Zinc salt(b) Silver salt(c) Iron salt(d) Potassium saltI got this question during a job interview.My question is from Technical Manufacturing of Amino Compound topic in section Amination by Ammonolysis of Unit Processes

Answer» RIGHT CHOICE is (B) Silver salt

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 mentionedI got this question in class test.Query is from Technical Manufacturing of Amino Compound topic in portion Amination by Ammonolysis of Unit Processes

Answer» CORRECT answer is (c) 90-100

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 does CK stand for in continuous production of nitroaniline?(a) Cooling vessel(b) Agitated vessel(c) Both of the mentioned(d) None of the mentionedI have been asked this question in my homework.This is a very interesting question from Technical Manufacturing of Amino Compound in division Amination by Ammonolysis of Unit Processes

Answer»

The CORRECT choice is (c) Both of the mentioned

The best I can explain: In CONTINUOUS production of nitroaniline, CK STANDS for water-cooled agitated vessel.

9.

Sodium Anthraquinone-2-sulfonate on amination produces what?(a) 2-Aminoanthraquinone(b) 3-Aminoanthraquinone(c) 2-anthraquinone(d) 2-AminequinoneI got this question in an interview for internship.My question is from Technical Manufacturing of Amino Compound topic in chapter Amination by Ammonolysis of Unit Processes

Answer»

The CORRECT choice is (a) 2-Aminoanthraquinone

For explanation I WOULD say: Sodium Anthraquinone-2-sulfonate on amination in presence of OXIDANT produces 2-Aminoanthraquinone.

10.

What does magma consists of?(a) Aluminium(b) Nitroaniline(c) Aniline(d) All of the mentionedI got this question in an interview for job.This question is from Technical Manufacturing of Amino Compound topic in section Amination by Ammonolysis of Unit Processes

Answer»

The CORRECT OPTION is (b) Nitroaniline

The explanation is: The magma CONSIST of finely divided nitroaniline and ammonium chloride solution.

11.

The preparation of p-Nitroaniline in Jacketed Autoclaves is done in which reactor?(a) Continuous(b) Batch(c) Semibatch(d) TubularThe question was posed to me during a job interview.The query is from Technical Manufacturing of Amino Compound in chapter Amination by Ammonolysis of Unit Processes

Answer»

The CORRECT option is (b) BATCH

The explanation is: The PREPARATION of p-Nitroaniline in done in batch reactor.

12.

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 mentionedThe question was posed to me by my college professor while I was bunking the class.This intriguing question comes from Technical Manufacturing of Amino Compound in section Amination by Ammonolysis of Unit Processes

Answer»

The correct option is (a) Potassium CHLORATE

To EXPLAIN I would say: 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.

13.

Chlorobenzene in presence of NH3 gives what?(a) Aniline(b) Benzene(c) Phenol(d) HClI got this question in semester exam.My doubt stems from Technical Manufacturing of Amino Compound topic in portion Amination by Ammonolysis of Unit Processes

Answer» RIGHT ANSWER is (a) Aniline

The EXPLANATION is: C6H5-Cl + NH3—–> C6H5-NH2 + HCL.
14.

Why should we increase the ratio of NH3 in the above reaction?(a) Better yield(b) Aniline production(c) Good quality(d) All of the mentionedThe question was asked by my college professor while I was bunking the class.Origin of the question is Technical Manufacturing of Amino Compound topic in portion Amination by Ammonolysis of Unit Processes

Answer»

The correct choice is (d) All of the mentioned

Explanation: An increase in the NH3 RATIO results in: (1) a better yield of aniline, (2) an increase in the ratio of aniline to phenol, and (3) a slight DIMINUTION in the yield of DIPHENYLAMINE.

15.

To achieve optimum yield in synthesis of HCN, oxygen should be in excess.(a) True(b) FalseThis question was addressed to me in a national level competition.This is a very interesting question from Technical Manufacturing of Amino Compound in portion Amination by Ammonolysis of Unit Processes

Answer»

Correct choice is (b) False

The EXPLANATION is: In order to obtain optimum yields, it is necessary to use less OXYGEN (as AIR) than the amount shown in the above equation, to prevent EXCESSIVE oxidation of AMMONIA to nitrogen oxides and methane to carbon oxides.

16.

Formation of HCN from NH3, CH4 and O2 reacts on which catalyst?(a) Zinc(b) Iron(c) Platinum(d) All of the mentionedThis question was addressed to me during an internship interview.My query is from Technical Manufacturing of Amino Compound topic in chapter Amination by Ammonolysis of Unit Processes

Answer» RIGHT answer is (C) Platinum

Easiest explanation: The synthesis of HCN from ammonia, methane (natural gas), and air. The over-all reaction CH4 + NH3 + 1.5 O2—–>HCN + 3H20 can be carried out effectively at about 1000°C over platinum-alloy SCREEN CATALYSTS.
17.

Complete the following reaction: CH4 + H2O —-> ____ + 2H2O.(a) CO(b) CO2(c) O2(d) None of the mentionedThe question was posed to me in a national level competition.I'm obligated to ask this question of Technical Manufacturing of Amino Compound topic in division Amination by Ammonolysis of Unit Processes

Answer»

Right option is (a) CO

To EXPLAIN: Natural gas is the major SOURCE of hydrogen, the reaction is as follows: CH4 + H2O —-> CO + 2H2O.

18.

Which gas is very important for the synthetic ammonia manufacture?(a) Synthesis gas(b) Nitrogen gas(c) Hydrogen gas(d) All of the mentionedI had been asked this question by my college professor while I was bunking the class.This intriguing question comes from Technical Manufacturing of Amino Compound topic in section Amination by Ammonolysis of Unit Processes

Answer»

The CORRECT choice is (a) Synthesis gas

For explanation: Highly purified synthesis gas is a prime requirement for synthetic AMMONIA manufacture, and since its nitrogen CONTENT ORIGINATES from air, hydrogen is the more COSTLY component.

19.

What is the stoichiometric ratio of N2 to H2?(a) 1:1(b) 1:2(c) 1:3(d) 3:1I have been asked this question in an online interview.My doubt stems from Technical Manufacturing of Amino Compound topic in section Amination by Ammonolysis of Unit Processes

Answer»

Correct ANSWER is (c) 1:3

Best explanation: To obtain maximum conversion percentages at the SELECTED operating pressures and TEMPERATURES, the law of mass action dictates that nitrogen and hydrogen be kept at the stoichiometric ratio of 1:3 and that gases which would CAUSE lower PARTIAL pressures of the reactants should not be present.

20.

What happens to equilibrium as temperature increases?(a) Increases(b) Decreases(c) Remains constant(d) None of the mentionedThe question was asked by my school teacher while I was bunking the class.I'm obligated to ask this question of Technical Manufacturing of Amino Compound topic in section Amination by Ammonolysis of Unit Processes

Answer»

Right option is (b) Decreases

To EXPLAIN I would say: The amount of ammonia formed at EQUILIBRIUM decreases as the temperature is increased and INCREASES as the pressure is increased, in accordance with the Le Chatelier BRAUN principle.

21.

The reaction of H2 to N2 is highly ______. Fill in the blank.(a) Endothermic(b) Exothermic(c) Neutral(d) None of the mentionedI had been asked this question in quiz.Enquiry is from Technical Manufacturing of Amino Compound topic in section Amination by Ammonolysis of Unit Processes

Answer» CORRECT CHOICE is (B) Exothermic

Explanation: The reaction of ‘nitrogen with hydrogen to FORM ammonia is a highly exothermic reaction. ACCORDING to Le Chatelier.
22.

Ammonia is manufactured by addition of H2 to N2 on which catalyst?(a) Cu(b) Zn(c) Fe(d) AlI got this question in an interview for job.My question comes from Technical Manufacturing of Amino Compound in division Amination by Ammonolysis of Unit Processes

Answer» CORRECT answer is (C) Fe

The best I can EXPLAIN: Most of the world’s ammonia SUPPLY is manufactured by the addition of HYDROGEN to nitrogen over an iron-based catalyst at elevated temperatures and pressures.
23.

Which type of element is Asbestos?(a) Conducting(b) Insulating(c) Heat exchange(d) None of the mentionedThe question was asked in an interview for internship.My doubt stems from Design of Reactors and Auxiliares topic in division Amination by Ammonolysis of Unit Processes

Answer»

The correct answer is (B) Insulating

Explanation: Asbestos is ab Insulating material, USED in REACTORS as an AUXILIARY, safety precautions.

24.

Gas-phase reactions are carried out continuously in which reactors?(a) Compact reactor(b) Shell and tube reactor(c) Double pipe reactor(d) All of the mentionedThe question was asked in an interview for internship.I'd like to ask this question from Design of Reactors and Auxiliares topic in portion Amination by Ammonolysis of Unit Processes

Answer»

The correct answer is (b) Shell and tube reactor

Easiest explanation: Gas-phase reactions are carried out continuously in REACTORS which are essentially shell-and-tube heat EXCHANGERS. This design is useful because the high RATIO of heat-transfer surface to volume simplifies temperature control and because there is only a small quantity of MATERIAL in process.

25.

Small tubes are commonly employed where the reaction is rapid.(a) True(b) FalseI got this question in a job interview.My question comes from Design of Reactors and Auxiliares in section Amination by Ammonolysis of Unit Processes

Answer»

Correct choice is (a) True

The explanation is: Small TUBES are commonly EMPLOYED where the reaction is RAPID and/or the heat of reaction must be removed rapidly. The two conventional types of tubular reactors are (1) coils immersed in a constant-temperature BATH and (2) a jacketed pipeline in which the inner tube is designed to withstand the reaction PRESSURE.

26.

Which of the following provides high speed agitation?(a) Gate(b) Anchor(c) Propellers(d) PaddleI had been asked this question at a job interview.Question is from Design of Reactors and Auxiliares in chapter Amination by Ammonolysis of Unit Processes

Answer» RIGHT answer is (C) Propellers

For EXPLANATION: Agitation is frequently accomplished by MEANS of high-speed propellers or vaned discs, LESS intense agitation is provided by gate, anchor, and paddle types of agitators.
27.

Is mechanical agitation required in autoclaves?(a) Yes(b) NoThis question was posed to me in semester exam.This interesting question is from Design of Reactors and Auxiliares in section Amination by Ammonolysis of Unit Processes

Answer» RIGHT option is (a) Yes

To elaborate: Mechanical agitation, which is USUALLY DESIRABLE, is necessary when the reactants are IMMISCIBLE.
28.

What is the pressure employed for steel autoclaves?(a) 500-600 psig(b) 600-700 psig(c) 700-800 psig(d) 800-900 psigThis question was posed to me during an internship interview.This is a very interesting question from Design of Reactors and Auxiliares in chapter Amination by Ammonolysis of Unit Processes

Answer»

The CORRECT CHOICE is (c) 700-800 psig

Easy explanation: Steel autoclaves, which commonly OPERATE at pressures up to 700-800 psi, are EMPLOYED for most commercial aminations.

29.

In batch reaction, for small diameter, what is the pressure used?(a) High(b) Low(c) Moderate(d) All of the mentionedThe question was posed to me in an interview for internship.My query is from Design of Reactors and Auxiliares topic in section Amination by Ammonolysis of Unit Processes

Answer» RIGHT answer is (a) High

For explanation I would SAY: In reactors TUBES or reaction vessels having SMALL diameters are preferred for higher pressures.
30.

Which of the following ammonolysis is an exothermic reaction?(a) Phenols(b) Alcohols(c) Aldehyde(d) All of the mentionedI got this question during an interview.My question is from Design of Reactors and Auxiliares in section Amination by Ammonolysis of Unit Processes

Answer»

The CORRECT choice is (d) All of the mentioned

To explain: The ammonolysis of unsaturated carbonyl compounds in the PRESENCE of HYDROGEN is the most exothermic type. Reaction of phenols, alcohols, and halides with AMMONIA is only SLIGHTLY exothermic.

31.

Reactions of hydrocarbons with ammonia is which type of reaction?(a) Endothermic(b) Exothermic(c) Neutral(d) None of the mentionedI have been asked this question in quiz.I'd like to ask this question from Design of Reactors and Auxiliares in section Amination by Ammonolysis of Unit Processes

Answer»

Right OPTION is (a) Endothermic

For explanation: Reactions of hydrocarbons with ammonia to FORM nitriles is a special cases because it is EXTREMELY endothermic in nature.

32.

Greater the molecular weight, higher will be the rate of ammonolysis.(a) True(b) FalseThe question was posed to me in an online interview.Question is taken from Kinetics of Ammonolysis topic in section Amination by Ammonolysis of Unit Processes

Answer»

The CORRECT choice is (b) False

The explanation is: The greater the molecular weight and the more complex the alkyl or aryl GROUP, the LOWER the RATE of ammonolysis.

33.

Complete the following reaction: R-COO-R’ + NH3 —–> _____ + HOR’.(a) R-CO-R’(b) R-COOH(c) R-C-NH2(d) R-CONH2The question was posed to me during an online interview.My question comes from Kinetics of Ammonolysis topic in division Amination by Ammonolysis of Unit Processes

Answer» CORRECT OPTION is (d) R-CONH2

Easy explanation: The REACTION is ammonolysis of ester, which is: R-COO-R’ + NH3 —–> R-CONH2 + HOR’.
34.

What product do we get on ammonolysis of ester?(a) Amine(b) Amide(c) Aniline(d) AzoI got this question in my homework.This key question is from Kinetics of Ammonolysis topic in chapter Amination by Ammonolysis of Unit Processes

Answer» CORRECT OPTION is (b) AMIDE

Explanation: The ammonolysis of ESTERS produces amide as its only PRODUCT.
35.

The reactions of ammonia and organic compounds are effected in which phase?(a) Vapour(b) Liquid(c) Both of the mentioned(d) None of the mentionedThis question was addressed to me in a job interview.I need to ask this question from Kinetics of Ammonolysis in portion Amination by Ammonolysis of Unit Processes

Answer»

Right answer is (c) Both of the mentioned

The EXPLANATION is: Reactions of ammonia and ORGANIC COMPOUNDS are effected in both vapour and LIQUID PHASES. The liquid-phase systems include anhydrous liquid ammonia, anhydrous ammonia in an organic diluent, and aqueous ammonia, occasionally in the presence of an organic solvent.

36.

What do we denote reaction-rate constant as?(a) C(b) d(c) k(d) None of the mentionedI had been asked this question in semester exam.My question comes from Kinetics of Ammonolysis in portion Amination by Ammonolysis of Unit Processes

Answer»

Correct choice is (c) K

Best EXPLANATION: The reaction rate CONSTANT is DENOTED as ‘k’.

37.

What is the nature of amination reaction?(a) Unimolecular(b) Bimolecular(c) Trimolecular(d) PolymolecularThe question was asked in final exam.The origin of the question is Kinetics of Ammonolysis in chapter Amination by Ammonolysis of Unit Processes

Answer» CORRECT option is (b) Bimolecular

The EXPLANATION is: The reaction is bimolecular in NATURE and involves the reaction of ONE MOLECULE of ammonia with one molecule of the other reactant.
38.

What is the method to control the pH of autoclave charge?(a) copper-ammonio hydroxides(b) zinc-ammonio hydroxides(c) Copper-ammonio(d) Copper-Nickel hydroxidesThis question was posed to me by my school principal while I was bunking the class.Question is from Kinetics of Ammonolysis topic in chapter Amination by Ammonolysis of Unit Processes

Answer»

The correct choice is (a) copper-ammonio HYDROXIDES

Explanation: There are two other USEFUL METHODS of controlling the pH of the autoclave charge: the introduction of copper-ammonio hydroxides and the use of buffer salts, such as soap or chIorates, which are attacked and decomposed when the concentration of the HYDRACID is SUFFICIENTLY great.

39.

Which of the following is an acid inhibitor?(a) Alkylamines(b) Secondary amines(c) Pyridine(d) All of the mentionedI got this question in homework.My question comes from Kinetics of Ammonolysis topic in portion Amination by Ammonolysis of Unit Processes

Answer»

The correct ANSWER is (d) All of the mentioned

Explanation: ACID inhibitors (e.g., alkylamines, SECONDARY amines, and PYRIDINE).

40.

Factors that affect the equilibrium?(a) Temperature of the system(b) Relative basicity of the amine(c) Solubility of the amine(d) All of the mentionedThis question was posed to me in an internship interview.This key question is from Kinetics of Ammonolysis topic in section Amination by Ammonolysis of Unit Processes

Answer»

The correct choice is (d) All of the mentioned

Easy explanation: the principal factors affecting the equilibriums are (1) the TEMPERATURE of the system, (2) the RELATIVE basicity of the amine, and (3) the SOLUBILITY of the amine.

41.

Al can be extracted from the product by which media?(a) Acid medium(b) Alkaline medium(c) None of the mentioned(d) Both of the mentionedThis question was addressed to me in an online quiz.This interesting question is from Amination Reactions topic in chapter Amination by Ammonolysis of Unit Processes

Answer»

Correct option is (B) Alkaline medium

Explanation: Aluminium is USUALLY employed as the extractable component, which can be dissolved out of the ALLOY by the action of alkaline MEDIA such as caustic soda solution.

42.

Metal catalyst shouldn’t be used in exothermic reactions.(a) True(b) FalseI had been asked this question in an interview for job.The doubt is from Amination Reactions in section Amination by Ammonolysis of Unit Processes

Answer»

Right ANSWER is (b) False

The explanation: As they are metals they are very good HEAT conductors, a PROPERTY which SOMETIMES can make them exceptionally suitable for use in strongly exothermic REACTIONS.

43.

Complete the following reaction: 2NaAlO2 + H2O —–> ______ + H2O.(a) AlO3(b) Al2O4(c) Al2O3(d) NaAlO2I have been asked this question in an interview for internship.This interesting question is from Amination Reactions topic in division Amination by Ammonolysis of Unit Processes

Answer»

The correct answer is (C) AL2O3

Best EXPLANATION: The following reaction is: 2NAALO2 + H2O —–> Al2O3 + H2O.

44.

Which of the following is a Foraminate catalyst?(a) Ni(b) H2(c) Al(d) All of the mentionedI got this question in a national level competition.I'm obligated to ask this question of Amination Reactions topic in chapter Amination by Ammonolysis of Unit Processes

Answer»

The CORRECT option is (a) Ni

For explanation I WOULD say: Nickel, cobalt and COPPER are foraminate catalyst.

45.

The catalyst of Aluminium phosphate acts as what?(a) Hydrating(b) Dehydrating(c) Aminating(d) All of the mentionedThis question was posed to me during an online interview.Enquiry is from Amination Reactions topic in division Amination by Ammonolysis of Unit Processes

Answer»

Correct answer is (b) DEHYDRATING

For explanation I WOULD SAY: A dehydration catalyst has been made by incorporating ALUMINIUM PHOSPHATE in alumina gel prior to dehydrating the gel.

46.

The reaction of aniline with cupric nitrate leads to what of the amine?(a) Reduction(b) Acidification(c) Oxidation(d) HydrogenationI got this question during an interview.My doubt stems from Amination Reactions topic in portion Amination by Ammonolysis of Unit Processes

Answer»

The correct choice is (C) OXIDATION

The best EXPLANATION: The treatment of aniline with CUPRIC nitrate leads to oxidation of the amine.

47.

In the preparation of easily oxidizable amines, ____ catalyst is good.(a) High(b) Low(c) Moderate(d) None of the mentionedI got this question in homework.Asked question is from Amination Reactions topic in section Amination by Ammonolysis of Unit Processes

Answer»

The CORRECT ANSWER is (B) Low

For explanation: in the preparation of easily oxidizable amines, low catalyst CONCENTRATION results in a SMALLER difference in reaction rates when cuprous and cupric compounds.

48.

In manufacturing of Aniline from Chlorobenzene which salt gives better result?(a) Cuprous salt(b) Aluminium salt(c) Zinc salt(d) All of the mentionedThis question was posed to me in semester exam.Enquiry is from Amination Reactions in portion Amination by Ammonolysis of Unit Processes

Answer»

Right answer is (a) CUPROUS salt

Easiest EXPLANATION: In the manufacture of aniline from chloro BENZENE, cuprous salts give better results and air is kept from the SYSTEM to prevent the formation of CUPRIC ions.

49.

Which metal catalyst is used in amination of aromatic halogen compound?(a) Cu(b) Ar(c) Ag(d) All of the mentionedI got this question in quiz.My doubt is from Amination Reactions in division Amination by Ammonolysis of Unit Processes

Answer»

Correct answer is (d) All of the mentioned

Explanation: In reaction of AMINATION of aromatic halogens, some METALS or compounds of metals following HYDROGEN in the electromotive series are advantageously USED as CATALYSTS (e.g., copper, arsenic, and silver) and Copper, copper oxides, and copper salts are most widely used.

50.

Which of the following is/are the advantage for using excess NH3?(a) Rapid amination(b) Complete reaction(c) Large quantity(d) All of the mentionedI got this question during an online exam.This key question is from Physical and Chemical Properties in chapter Amination by Ammonolysis of Unit Processes

Answer» CORRECT ANSWER is (d) All of the mentioned

To elaborate: by utilizing a more concentrated NH3 solution for non-catalytic aminations may be summed up as FOLLOWS: (1) amination is more rapid, (2) conversion of reacting compound to primary amine is more COMPLETE, (3) formation of secondary and tertiary amines and HYDROXY compounds is inhibited, (4) lower reaction temperatures can be used, and (5) since larger batches can be treated.