NEET Chemistry MCQ: NCERT Alcohol Dehydration | NEET.Guide Questions

Which of the following reagents would be LEAST effective in converting 1-methylcyclohexanol to 1-methylcyclohexene?

A

Concentrated $H_2SO_4$

B

Concentrated HCl

C

$POCl_3$ in pyridine

D

TsCl in pyridine followed by NaOEt

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Alcohols

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :1.5 mins

🔄Ncert Concepts :Alcohols, Dehydration, Elimination Reactions, E1, E2, Carbocations

Related Questions

Scientific aspect of fermentation was first studied by:

A

Pasteur

B

Brot

C

Buchner

D

Liebig

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Alcohols

🎓 Ncert Level:Remembering

🎯Difficulty :Hard

⚡ Time Required :1 mins

🔄Ncert Concepts :History of Science, Fermentation, Biochemistry

The best method to prepare cyclohexene from cyclohexanol is by using

A

Conc. HCI + ${\rm{ZnC}}{{\rm{I}}_2}$

B

Conc. ${{\rm{H}}_3}{\rm{P}}{{\rm{O}}_4}$

C

HBr

D

Conc. HCI

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Alcohols

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Dehydration of alcohols, Elimination reactions, Acid catalysis

In the following reaction, X and Y respectively are

${{\rm{C}}_2}{{\rm{H}}_5}{\rm{OH}}\mathop o \limits^{{\rm{\;\;\;\;KMn}}{{\rm{O}}_4}/{{\rm{H}}^ + }{\rm{\;\;}}} X\mathop {\mathop o \limits^{\;\;\;\;\;\;\;\;\;\;\;Y\;\;\;\;\;\;\;\;\;\;\;} }\limits_{{{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4}/\Delta } {\rm{C}}{{\rm{H}}_3}{\rm{C}}{{\rm{O}}_2}{{\rm{C}}_2}{{\rm{H}}_5}$

A

${\rm{C}}{{\rm{H}}_3}{\rm{OH}},{\rm{\;}}{{\rm{C}}_2}{{\rm{H}}_5}{\rm{OH}}$

B

${\rm{C}}{{\rm{H}}_3}{\rm{CHO}},{\rm{\;C}}{{\rm{H}}_3}{\rm{OH}}$

C

${\rm{C}}{{\rm{H}}_3}{\rm{C}}{{\rm{O}}_2}{\rm{H}},{\rm{\;}}{{\rm{C}}_2}{{\rm{H}}_5}{\rm{OH}}$

D

${{\rm{C}}_2}{{\rm{H}}_4},{\rm{\;C}}{{\rm{H}}_3}{\rm{C}}{{\rm{O}}_2}{\rm{H}}$

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Alcohols

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :2 mins

🔄Ncert Concepts :Oxidation of alcohols, Esterification

Consider the following reaction sequence $C{H_3}C{H_2}C{H_2}OHABC\left( {Major} \right)$ product C is a/an

A

Carboxylic acid

B

Amide

C

Amine

D

Aldehyde

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Alcohols

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Organic Reactions, Oxidation, Alcohols, Aldehydes, Carboxylic Acids

Catalytic dehydrogenation of a primary alcohol gives a

A

Secondary alcohol

B

Aldehyde

C

Ketone

D

Ester

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Alcohols

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Organic Chemistry, Reactions of Alcohols, Oxidation, Catalysis

Argol, a brown crust, formed during the fermentation of grape juice contains

A

${\rm{C}}{{\rm{O}}_2}$

B

Fused oil

C

Potassium hydrogen tartarate

D

lye

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Alcohols

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Fermentation, Chemistry of Wine Making

Which method is employed to convert alkyl halide into alcohol?

A

Substitution

B

Addition

C

Dehydration

D

Rearrangement

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Alcohols

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :organic reactions, substitution reaction, alkyl halides, alcohols

Which of these is a tertiary alcohol?

A

Ethanol

B

Propan-1-ol

C

2-methylpropan-2-ol

D

Butan-1-ol

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Alcohols

🎓 Ncert Level:Understanding

🎯Difficulty :Easy

⚡ Time Required :0.5 mins

🔄Ncert Concepts :Alcohols, Classification

Ethyl alcohol is also known as:

A

Spirit of wine

B

Methyl carbinol

C

Grain alcohol

D

All of these

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Alcohols

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Nomenclature of organic compounds, Common names of alcohols

Lucas reagent is

A

Conc. ${\rm{HCI}}$ and anhydrous ${\rm{ZnC}}{{\rm{I}}_2}$

B

Conc. ${\rm{HNO}}$ and hydrous ${\rm{ZnC}}{{\rm{I}}_2}$

C

Conc. ${\rm{HCI}}$ and hydrous ${\rm{ZnC}}{{\rm{I}}_2}$

D

Conc. ${\rm{HNO}}$ and anhydrous ${\rm{ZnC}}{{\rm{I}}_2}$

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Alcohols

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Lucas reagent, chemical reagents, organic chemistry

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