Explore topic-wise InterviewSolutions in .

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.

51.

Hydrogen peroxide oxidizes which type of organic compounds?(a) Saturated(b) Unsaturated(c) Aromatic(d) None of the mentionedThis question was posed to me in an interview for job.This key question is from Liquid Phase Oxidation with Oxidizing Compounds topic in portion Oxidation of Unit Processes

Answer»

The correct answer is (b) Unsaturated

For explanation I WOULD say: Hydrogen peroxide in the presence of CATALYSTS of the oxides of Ru, V, Cr, or Mo also oxidizes ORGANIC unsaturated compounds to GLYCOLS.

52.

Which acid is used for the production of synthetic camphor from turpentine?(a) Nitric acid(b) Sulphuric acid(c) Hydrochloric acid(d) None of the mentionedThe question was posed to me in unit test.The question is from Liquid Phase Oxidation with Oxidizing Compounds in portion Oxidation of Unit Processes

Answer» CORRECT choice is (a) NITRIC acid

Easiest explanation: Nitric acid has been WIDELY used in the PRODUCTION of synthetic camphor from turpentine.
53.

What is the formula of Fuming Sulphuric acid?(a) H2SO3+SO2(b) H2SO4+SO3(c) H2SO4+SO4(d) H2SO4+OHI had been asked this question during an internship interview.I need to ask this question from Oxidizing Agents in chapter Oxidation of Unit Processes

Answer»

The correct choice is (b) H2SO4+SO3

For explanation I WOULD say: Fuming sulfuric acid, H2S04 + SO3, in the PRESENCE of MERCURY salts ACTS as a powerful oxidizing agent.

54.

The action of oxidizing agents on organic compounds depends what?(a) Temperature(b) Nature of agent(c) Concentration of reactant(d) All of the mentionedI had been asked this question during an interview.This intriguing question originated from Liquid Phase Oxidation with Oxidizing Compounds topic in portion Oxidation of Unit Processes

Answer»

The correct answer is (d) All of the mentioned

Easy explanation: The action of oxidizing AGENTS on ORGANIC COMPOUNDS depends not only upon the NATURE of the agent or the compound but also upon such factors as concentration, temperature, hydrogen-ion concentration, and method of mixing.

55.

Copper salt in its lower state reacts as what?(a) Oxidizing agent(b) Reducing agent(c) Neutralizing agent(d) Both oxidizing and reducing agentThe question was asked in homework.This interesting question is from Oxidizing Agents topic in section Oxidation of Unit Processes

Answer»

The correct choice is (B) Reducing agent

Best explanation: In its higher state of oxidation, it is capable of acting as an OXIDIZING agent and, in its lower state, as a reducing agent. This property MAKES the metal a useful material as an OXYGEN CARRIER or oxidation catalyst.

56.

Is fusion with alkali in the presence of air possible?(a) Yes(b) NoThe question was asked in an internship interview.Enquiry is from Oxidizing Agents in section Oxidation of Unit Processes

Answer»

The correct CHOICE is (a) Yes

The best explanation: Fusion with alkali in the presence of air (OXYGEN) often accomplishes oxidations impossible to obtain otherwise. For instance, the formation of oxyacids from substituted phenols by DIRECT oxidation of side chains is difficult of accomplishment because of the much greater susceptibility of the hydroxyl group to attack and CONSEQUENT tendency for the breakdown of the molecule. Alkali fusion accomplishes the desired reaction but with poor yields.

57.

What is the disadvantage of using Nitric acid as an oxidizing agent?(a) Partial oxidation(b) Nitrating agent(c) Both of the mentioned(d) None of the mentionedThe question was posed to me in an online quiz.This question is from Oxidizing Agents in section Oxidation of Unit Processes

Answer» CORRECT choice is (c) Both of the mentioned

To explain: The principal disadvantage of nitric ACID as a PARTIAL oxidizing agent, rises from the tendency to act as a NITRATING agent.
58.

Copper is capable of existing in two states.(a) True(b) FalseThis question was posed to me in semester exam.My doubt is from Oxidizing Agents topic in section Oxidation of Unit Processes

Answer»

Right option is (a) True

Easy explanation: Copper is CAPABLE of existing in two states of oxidation and of passing READILY from ONE to the other of these states by oxidation or REDUCTION. In its higher state of oxidation, it is capable of acting as an oxidizing agent and, in its lower state, as a reducing agent.

59.

What is the formula of Chloric acid?(a) Cl02(b) ClO3(c) HClO3(d) H2ClO3The question was asked in quiz.The question is from Oxidizing Agents topic in chapter Oxidation of Unit Processes

Answer»

Correct ANSWER is (C) HClO3

To elaborate: Chloric acid, HCIO3, is a powerful oxidizing AGENT.

60.

Peroxide of which agent is used as an oxidizing agent?(a) Lead(b) Manganese(c) Hydrogen(d) All of the mentionedI had been asked this question in quiz.I need to ask this question from Oxidizing Agents in division Oxidation of Unit Processes

Answer»

Right answer is (d) All of the mentioned

Easy explanation: The PRINCIPAL peroxides used as OXIDIZING AGENTS are those of lead, MANGANESE, and hydrogen; such as: PbO2,MnO2 and H2O2.

61.

Silver oxides are strong oxidizing agent?(a) True(b) FalseI have been asked this question in class test.Question is taken from Oxidizing Agents topic in portion Oxidation of Unit Processes

Answer»

The CORRECT answer is (b) False

Easiest EXPLANATION: SILVER has the capacity to act as an oxygen CARRIER or oxidation catalyst, presumably because it can form oxides other than the common Ag2O. ALTHOUGH not extensively used as such, the oxide, Ag2O, acts as a mild oxidation agent.

62.

What is the advantage of Sodium chlorate?(a) High solubility(b) Less cost(c) Large amount(d) All of the mentionedThe question was posed to me in a national level competition.Origin of the question is Oxidizing Agents topic in division Oxidation of Unit Processes

Answer»

Right choice is (d) All of the mentioned

Best explanation: The SOLUBILITY of sodium chlorate in water is far greater than that of the potassium salt. ALSO, it is less expensive, and large AMOUNTS are used ANNUALLY.

63.

What is the NaClO3 called?(a) Sodium chlorine(b) Sodium oxidechloro(c) Sodium chlorite(d) All of the mentionedThe question was asked in a national level competition.I'm obligated to ask this question of Oxidizing Agents in division Oxidation of Unit Processes

Answer»

Correct OPTION is (c) Sodium CHLORITE

Explanation: Sodium chlorite has a formula: NACLO3.

64.

Chlorinated solutions of which hydroxides are active oxidizing agents?(a) Sodium(b) Aluminium(c) Copper(d) All of the mentionedThe question was posed to me by my school teacher while I was bunking the class.Asked question is from Oxidizing Agents in section Oxidation of Unit Processes

Answer»

Right option is (b) Aluminium

The best I can explain: Chlorinated solutions of zinc and aluminium hydroxides are more active oxidizing agents than are comparably treated solutions of the alkalis or ALKALINE EARTHS because of greater hydrolysis and consequent more rapid DECOMPOSITION of HYPOCHLOROUS ACID.

65.

Hypochlorous acid is unstable.(a) True(b) FalseThe question was posed to me in a national level competition.I'd like to ask this question from Oxidizing Agents in division Oxidation of Unit Processes

Answer»

The CORRECT choice is (a) True

The best I can explain: HYPOCHLOROUS acid is UNSTABLE and DECOMPOSES very easily to liberate oxygen.

66.

What is the use of addition of acetic or sulfuric acid to KMnO4 solutions?(a) Neutralise(b) Alkaline(c) Oxidise(d) AcidityThe question was asked in quiz.My doubt is from Oxidizing Agents topic in division Oxidation of Unit Processes

Answer»

The correct option is (c) Oxidise

Best explanation: The addition of acetic or SULFURIC acid to potassium

Permanganate solutions yields a POWERFUL oxidizing AGENT useful only in the preparation of very stable compounds.

67.

Chromic acid and the dichromate’s have numerous applications in the organic chemical industry.(a) True(b) FalseThis question was addressed to me in an international level competition.Enquiry is from Oxidizing Agents in division Oxidation of Unit Processes

Answer»

Right OPTION is (a) True

Easy explanation: Chromic acid and the dichromate find numerous other applications as oxidizing agents in the ORGANIC chemical industry. In the manufacture of perfumes, they may be used to oxidize ANETHOLE to ANISIC aldehyde, isosafrol to piperonal (heliotropin), etc.

68.

Which of the following is an oxidizing agent?(a) NaOH(b) CrO3(c) Cl2(d) H2OI got this question during an internship interview.My question comes from Oxidizing Agents in division Oxidation of Unit Processes

Answer»

Correct choice is (b) CrO3

Explanation: CHROMIC ANHYDRIDE, CrO3, dissolved in GLACIAL ACETIC acid, is sometimes used as an oxidizing agent.

69.

When potassium permanganate is used in aqueous solution, the solution becomes what?(a) Alkaline(b) Acidic(c) Neutral(d) None of the mentionedThis question was addressed to me at a job interview.This intriguing question originated from Oxidizing Agents topic in portion Oxidation of Unit Processes

Answer»

The correct choice is (a) Alkaline

To ELABORATE: When potassium PERMANGANATE ALONE is used in aqueous solution, the solution becomes alkaline through the formation of potassium HYDROXIDE.

70.

In neutral solution, what is the need of CO2 in the oxidation?(a) Acidify(b) Basicity(c) Neutralise(d) None of the mentionedThe question was posed to me by my college professor while I was bunking the class.This interesting question is from Oxidizing Agents in division Oxidation of Unit Processes

Answer»

The correct answer is (c) Neutralise

The best explanation: NEUTRAL Solution. To AVOID the ALKALINITY produced by the use of potassium permanganate ALONE as an oxidizing agent, resort may be had to the INTRODUCTION of carbon dioxide to neutralize the alkali.

71.

What is the order of the oxidation of aromatic hydrocarbons with potassium permanganate?(a) Zero order(b) First order(c) Second order(d) None of the mentionedI had been asked this question in an international level competition.My query is from Oxidizing Agents in section Oxidation of Unit Processes

Answer»

Correct CHOICE is (b) First order

To explain: KINETIC studies of the OXIDATION of aromatic hydrocarbons with potassium permanganate show that reaction is first order with respect to each reactant.

72.

Permanganate can be used as an oxidizing agent for which compound?(a) Alkaline(b) Neutral(c) Acid solutions(d) All of the mentionedThe question was asked in an interview for internship.My question is taken from Oxidizing Agents topic in section Oxidation of Unit Processes

Answer»

Right choice is (d) All of the mentioned

For EXPLANATION I WOULD say: Permanganate functions as an OXIDIZING agent of different STRENGTHS in alkaline, neutral, and acid solutions.

73.

Which salt is used as an oxidation of complex for proteins?(a) Sodium salts(b) Calcium salts(c) Both of these(d) None of the mentionedThis question was addressed to me in a national level competition.I'm obligated to ask this question of Oxidizing Agents topic in chapter Oxidation of Unit Processes

Answer»

Correct CHOICE is (b) CALCIUM SALTS

Explanation: The calcium and BARIUM salts have been used for the oxidation of complex proteins. The calcium SALT has the advantage in that it forms insoluble products.

74.

Permanganate is a mild oxidizing agent.(a) True(b) FalseThis question was addressed to me in class test.This interesting question is from Oxidizing Agents in section Oxidation of Unit Processes

Answer»

The correct option is (b) False

Explanation: The solid SALTS of permanganic acid are powerful oxidizing agents. Calcium permanganate induces such rapid oxidation of ethanol that INFLAMMATION MAY RESULT.

75.

Sulphur compounds may be oxidized by which acid?(a) Permanganate(b) Hydroxide(c) Oxygen(d) All of the mentionedI have been asked this question during a job interview.I want to ask this question from Types of Oxidative Reactions in chapter Oxidation of Unit Processes

Answer»

Correct OPTION is (a) PERMANGANATE

For explanation I would say: Sulphur compounds may be OXIDIZED by acid permanganate, as in the PREPARATION of sulfonals, trionals, and tetranals.

76.

Amino compounds may be oxidized to which compound(s)?(a) Azobenzene(b) Para-amino-phenol(c) Nitrobenzene(d) All of the mentionedThis question was posed to me in a job interview.I want to ask this question from Types of Oxidative Reactions in portion Oxidation of Unit Processes

Answer»

Correct option is (d) All of the mentioned

For explanation: Amino compounds MAY be oxidized to AZOBENZENE, p-amino-phenol, or nitrobenzene under moderate CONDITIONS, or the N-containing RADICAL may be COMPLETELY removed under drastic conditions.

77.

Which of the following is an oxidizing agent?(a) KMnO4(b) NaOH(c) CO(d) All of the mentionedI had been asked this question in examination.My doubt is from Types of Oxidative Reactions topic in portion Oxidation of Unit Processes

Answer»
78.

Is a combination of dehydrogenation and introduction of oxygen possible?(a) Yes(b) NoThis question was posed to me in a job interview.My question is from Types of Oxidative Reactions in portion Oxidation of Unit Processes

Answer»

The correct OPTION is (a) Yes

For explanation I would say: A combination of dehydrogenation and introduction of oxygen is done as in the PREPARATION of aldehydes from hydrocarbons: CH4 + O2 ——> CH2O + H20.

79.

Conversion of Benzoyl Chloride to Benzoyl Peroxide is called which oxidative reaction?(a) Dehydrogenation(b) Direct O2 addition(c) Peroxidation(d) Combine oxidationI have been asked this question in exam.I want to ask this question from Types of Oxidative Reactions topic in portion Oxidation of Unit Processes

Answer»

The CORRECT choice is (C) Peroxidation

For explanation: In peroxidation, REQUIRE the interaction of an inorganic PEROXIDE, THEREFORE converting Benzoyl Chloride to Benzoyl Peroxide.

80.

Oleic acid can be converted to dihydroxystearic acid in presence of what?(a) NaOH(b) KMnO4(c) H2O(d) COI had been asked this question in an internship interview.This interesting question is from Types of Oxidative Reactions topic in portion Oxidation of Unit Processes

Answer»

Correct answer is (B) KMnO4

Explanation: Oleic acid can be converted to dihydroxystearic acid in PRESENCE of ALKALINE potassium PERMANGANATE (KMnO4).

81.

Complete the following reaction: CH3CH0 + 0.5 O2 —–>______.(a) CH4(b) CH3CHO(c) CH3COOH(d) None of the mentionedThis question was posed to me during an online exam.This interesting question is from Types of Oxidative Reactions in portion Oxidation of Unit Processes

Answer» RIGHT choice is (c) CH3COOH

Best explanation: In this reaction an atom of oxygen MAY be INTRODUCED into a MOLECULE, such as: CH3CH0 + 0.5 O2 —–> CH3COOH.
82.

Preparation of aldehydes from alcohols is done in which reaction?(a) Addition of O2(b) Replacement reaction(c) Dehydrogenation reaction(d) All of the mentionedI got this question in homework.The above asked question is from Types of Oxidative Reactions topic in chapter Oxidation of Unit Processes

Answer»

Right OPTION is (C) Dehydrogenation reaction

For explanation I would say: Dehydrogenation is a primary method to CONVERT alcohols to ALDEHYDES.

83.

Dehydrogenation is not an oxidative reaction.(a) True(b) FalseI have been asked this question during a job interview.The doubt is from Types of Oxidative Reactions topic in portion Oxidation of Unit Processes

Answer»

The CORRECT CHOICE is (b) False

Explanation: Dehydrogenation is an oxidative reaction as OXYGEN is added to the compound and HYDROGEN is removed.