NEET Chemistry MCQ: NCERT Ethers Identification | NEET.Guide Questions

An unknown ether, upon treatment with HI, produces a single alkyl iodide. This alkyl iodide, when reacted with sodium in dry ether, forms n-hexane. Identify the original ether.

A

Diethyl ether

B

Dipropyl ether

C

Dibutyl ether

D

Diisopropyl ether

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Ethers

🎓 Ncert Level:Analyzing

🎯Difficulty :Hard

⚡ Time Required :2.5 mins

🔄Ncert Concepts :Ethers, Cleavage of Ethers, Wurtz Reaction

Related Questions

The reaction of ${\rm{C}}{{\rm{H}}_3}{\rm{O}}{{\rm{C}}_2}{{\rm{H}}_5}$ with ${\rm{HI}}$ gives:

A

${\rm{C}}{{\rm{H}}_3}{\rm{I}}$ only

B

${{\rm{C}}_2}{{\rm{H}}_5}{\rm{OH}}$ only

C

${\rm{C}}{{\rm{H}}_3}{\rm{I}} + {{\rm{C}}_2}{{\rm{H}}_5}{\rm{OH}}$

D

${{\rm{C}}_2}{{\rm{H}}_5}{\rm{I}} + {\rm{C}}{{\rm{H}}_3}{\rm{OH}}$

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Ethers

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :ether cleavage, nucleophilic substitution, reaction mechanism

${\rm{C}}{{\rm{H}}_3} - {\rm{C}}{{\rm{H}}_2} - {\rm{O}} - {\rm{C}}{{\rm{H}}_2} - {\rm{C}}{{\rm{H}}_3}$ reacts with hot and excess HI, then formed product is

A

${\rm{C}}{{\rm{H}}_3} - {\rm{C}}{{\rm{H}}_2} - {\rm{I\;and\;C}}{{\rm{H}}_3}{\rm{C}}{{\rm{H}}_2}{\rm{OH}}$

B

${\rm{C}}{{\rm{H}}_3} - {\rm{C}}{{\rm{H}}_2} - {\rm{OH}}$

C

${\rm{C}}{{\rm{H}}_3} - {\rm{C}}{{\rm{H}}_2} - {\rm{I}}$

D

None of the above

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Ethers

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Ether cleavage, SN2 reaction, Reaction with HI

The reaction of ${\rm{C}}{{\rm{H}}_3}{\rm{O}}{{\rm{C}}_2}{{\rm{H}}_5}$ with ${\rm{HI}}$ gives:

A

CH₃I and C₂H₅I

B

CH₃OH and C₂H₅I

C

CH₃I and C₂H₅OH

D

CH₃OH and C₂H₅OH

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Ethers

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :ether cleavage, nucleophilic substitution, SN1 reaction, SN2 reaction

Anisole is treated with excess HI. What is the major product formed?

A

Phenol and methyl iodide

B

Iodobenzene and methanol

C

Benzene and methanol

D

o-iodoanisole and water

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Ethers

PYQ YEAR: 2020

🎓 Ncert Level:Application

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :Ether, Cleavage, Excess HI, Anisole, Phenol

Which of the following compounds when heated with CO at 150 $^ \circ C$ and 500 atm pressure in presence of ${\rm{B}}{{\rm{F}}_3}$ forms ethyl propionate?

A

${{\rm{C}}_2}{{\rm{H}}_5}{\rm{OH}}$

B

${\rm{C}}{{\rm{H}}_3}{\rm{OC}}{{\rm{H}}_3}$

C

${{\rm{C}}_2}{{\rm{H}}_5}{\rm{O}}{{\rm{C}}_2}{{\rm{H}}_5}$

D

${\rm{C}}{{\rm{H}}_3}{\rm{O}}{{\rm{C}}_2}{{\rm{H}}_5}$

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Ethers

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Organic Chemistry, Reaction Mechanisms, Carbonylation, Ether Cleavage

Ether on reacting with ${{\rm{P}}_2}{{\rm{S}}_5}$ form

A

Diethyl sulphide

B

Thioalcohol

C

Thioether

D

Thioaldehyde

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Ethers

🎓 Ncert Level:Application

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :Reaction of ethers, Reaction with Phosphorus pentasulfide, Functional groups, Thioether formation

The reaction of diethyl ether with one equivalent of HI at room temperature primarily yields:

A

Two molecules of ethyl iodide

B

Ethyl iodide and ethanol

C

Diethyl ether and HI remain unreacted

D

Ethene and ethanol

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Ethers

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :1.5 mins

🔄Ncert Concepts :Ethers, Cleavage of Ethers, Reaction with HI

${\rm{HBr}}$ reacts with ${\rm{C}}{{\rm{H}}_2}$ = ${\rm{CH}}$ — ${\rm{OC}}{{\rm{H}}_3}$ under anhydrous conditions at room temperature to give:

A

${\rm{C}}{{\rm{H}}_3}{\rm{CHO}}$ and C ${\rm{C}}{{\rm{H}}_3}{\rm{CHO}}$

B

${\rm{BrC}}{{\rm{H}}_2}{\rm{CHO}}$ and ${\rm{C}}{{\rm{H}}_3}{\rm{OH}}$

C

${\rm{BrC}}{{\rm{H}}_2}$ — ${\rm{C}}{{\rm{H}}_2}$ — ${\rm{OC}}{{\rm{H}}_3}$

D

${{\rm{H}}_3}{\rm{C}}$ — ${\rm{CHBr}}$ — ${\rm{OC}}{{\rm{H}}_3}$

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Ethers

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :Electrophilic addition, Markovnikov's rule, reaction mechanism, regioselectivity

$Tert$ -butyl methyl ether on heating with anhydrous HI in ether gives

A

tert-butyl iodide and methanol

B

tert-butyl alcohol and methyl iodide

C

isobutylene and methyl iodide

D

tert-butyl iodide and water

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Ethers

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Ethers, Reaction with HI, SN1, SN2, Carbocation Stability

On boiling with conc. hydrobromic acid, phenylethylether will yield:

A

Phenol and ethyl bromide

B

Bromobenzene and ethanol

C

Phenol and ethane

D

Bromobenzene and ethane

Question Tags

📚 Subject:Chemistry

📑 Chapter:Alcohols, Phenols And Ethers

🎯Topic:Ethers

🎓 Ncert Level:Application

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :Ethers, Nucleophilic Substitution, Acidic Cleavage

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