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Unit Processes Multiple Choice Questions | MCQs | Quiz

Unit Processes Interview Questions and Answers
Practice Unit Processes questions and answers for interviews, campus placements, online tests, aptitude tests, quizzes and competitive exams.

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•   Equilibrium Conversions
•   Reactions Types
•   Reactions
•   Nitration Agents
•   Aromatic Nitration
•   Nitration Organic Solvent
•   Paraffinic Hydrocarbons
•   Nitrate Esters
•   Nitration
•   Process Equipment Type
•   Nitration Mixed Acids
•   Preparations
•   Amination Reductions
•   Reduction Methods
•   Equipments & Process
•   Reductions Types
•   Sulfide Reduction
•   Halogenation
•   Reactions Types
•   Chlorination Types
•   Sandmeyer Reactions
•   Chlorinating Agents Types
•   Sulphonation & Sulfides
•   Sulfonates & Sulfates
•   Benzene
•   Chlorosulfonation
•   Sulfoxidation
•   Physical Factors
•   Chemical structures
•   Catalyst & Sulfonating
•   Kinetics
•   Desulfonation Reactions
•   Sulfation Preparation
•   Ammonolysis
•   Aminating Agents
•   Aminating Agents-SO3H
•   Hydroamonolysis
•   Aminating Hydrocarbon
•   Aminating Chemicals
•   Amination Reactions
•   Ammonolysis Kinetics
•   Auxiliares Design
•   Amino Compound - 1
•   Amino Compound - 2
•   Reactions Types
•   Oxidizing Agents - 1
•   Oxidizing Agents - 2
•   Oxidizing Compounds
•   Oxidation Liquid Phase
•   Aliphatic Compounds
•   Oxidation Hydrocarbon
•   Thermodynamics
•   Oxidation Apparatus
•   Hydrogen Introduction
•   Hydrogen Production
•   Hydrogen Properties
•   Hydrogenation Catalytic
•   Hydrogenolysis Reaction
•   Hydrogenation Reaction
•   Catalyst Principles
•   Catalyst Classification
•   Construction Material
•   Industrial Processes - 1
•   Industrial Processes - 2
•   Industrial Processes - 3
•   Hydrocarbon Introduction
•   Hydrocarbon Catalyst - 1
•   Hydrocarbon Catalyst - 2
•   Reactor Developemnt
•   Commercial Operation
•   Fischer Processes
•   Isosynthesis Processes
•   Organic Acids
•   Esterification Catalystic
•   Esterification Basics
•   Carboxylic Acid - 1
•   Carboxylic Acid - 2
•   Inorganic Acids
•   Esterification Practice
•   Manufacturings
•   Hydrolysis Definition
•   Hydrolysis Agents
•   Hydrolysis Materials
•   Hydrolysis kinetics
•   Hydrolysis Equipments
•   Hydrolysis Operations
•   Hydrolysis Preparations
•   Alkylated Types
•   Alkylation Types
•   Alkylating Agents
•   Alkylation Factors
•   Alkylation Effects
•   Polymerization Basics
•   Polymerization Reaction
•   Polymerization Methods

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Unit Processes Questions and Answers – Desulfonation Reactions

Posted on May 18, 2017 by Manish

This set of Unit Processes Multiple Choice Questions & Answers (MCQs) focuses on “Desulfonation Reactions”.

1. Hydrolytically sulfonated is reacted in which medium?
a) Aqueous basic medium
b) Aq. Acidic medium
c) Neutral medium
d) None of the mentioned
View Answer

Answer: b
Explanation: Aromatic sulfonates are hydrolytically desulfonated by heating in aqueous acid medium.

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2. Which type of reaction is the following: RSO3H + HOH ——> RH + H2SO4.
a) Sulfonation
b) Desulfonation
c) Chlorosulfonation
d) Rearrangement
View Answer

Answer: b
Explanation: The following reaction is Desulfonation of Aromatic sulfates.

3. What effect does Mineral acid has on Desulfonation reaction?
a) Increases reaction rate
b) Decrease reaction rate
c) No effect on it
d) Inhibits the reaction
View Answer

Answer: a
Explanation: Desulfonation reaction, which is the reverse of sulfonation, generally proceeds rapidly and in good yield, especially in the presence of an added mineral.

4. Which of the following is/are mineral acid?
a) Phosphoric
b) Hydrochloric
c) Hydrobromic
d) All of the mentioned
View Answer

Answer: d
Explanation: Sulfuric, phosphoric, hydrochloric, hydrobromic comes under Mineral acids.

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5. What effect does increased ring methylation has on Sulfonation?
a) Increases
b) Decreases
c) Neutral
d) None of the mentioned
View Answer

Answer: a
Explanation: It is known that increased ring methylation generally lowers the desulfonation temperature for both hydrocarbon and phenolic sulfonates.

6. Sulfonation, followed by desulfonation method cannot be used for separation of Aromatic compounds.
a) True
b) False
View Answer

Answer: b
Explanation: Sulfonation, followed by desulfonation, has been used to separate mixtures of aromatic compounds not easily separable by distillation. Either or both steps can be selective.

7. Sulfonation-Desulfonation is useful in preparation of what?
a) Ortho isomer
b) Para isomer
c) Meta isomer
d) None of the mentioned
View Answer

Answer: a
Explanation: Sulfonation-desulfonation is a useful tool for preparing ortho isomer derivatives of benzene.

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8. Why is there a need to use “Brining-out” process?
a) Mixing Sulfonates
b) Increasing reaction
c) Isolating sulfonates
d) All of the mentioned
View Answer

Answer: c
Explanation: The “brining-out” procedure is used commercially to isolate many sulfonate dye intermediates, including those from nitrobenzene, the nitrotoluenes, the nitro chlorobenzenes, naphthalene etc.

Sanfoundry Global Education & Learning Series – Unit Processes.
To practice all areas of Unit Processes, here is complete set of 1000+ Multiple Choice Questions and Answers.

« Prev Page - Unit Processes Questions and Answers – Kinetics, Mechanism and Thermodynamics
» Next Page - Unit Processes Questions and Answers – Technical Preparations

« Unit Processes Questions and Answers – Kinetics, Mechanism and Thermodynamics
Unit Processes Questions and Answers – Technical Preparations »
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Deep Dive @ Sanfoundry:

  1. Engineering Chemistry Questions and Answers
  2. Chemical Engineering Questions and Answers
  3. Chemical Process Calculation Questions and Answers
  4. Separation Processes Questions and Answers
  5. Advanced Machining Processes Questions and Answers
  6. Organic Chemistry Questions and Answers
  7. Unit Processes Questions and Answers
  8. Unit Processes Questions and Answers – Sulfoxidation
  9. Unit Processes Questions and Answers – Chlorosulfonation
  10. Unit Processes Questions and Answers – Chemical Structures
Manish Bhojasia
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn | Facebook | Twitter

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