Reactions of Alcohols
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323098 The relative rate of acid catalyzed dehydration of following alcohols would be
supporting img

1 \({\rm{III}}\,{\rm{ > }}\,{\rm{II}}\,{\rm{ > }}\,{\rm{IV}}\,{\rm{ > }}\,{\rm{I}}\)
2 \({\rm{III}}\,{\rm{ > }}\,{\rm{IV}}\,{\rm{ > }}\,{\rm{I}}\,{\rm{ > }}\,{\rm{II}}\)
3 \({{\rm{III > I > IV > II}}}\)
4 \({\rm{III}}\,{\rm{ > }}\,{\rm{II}}\,{\rm{ > }}\,{\rm{I}}\,\,{\rm{ > }}\,\,{\rm{IV}}\)
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323099 Assertion :
The ease of dehydration of the following alcohols is
supporting img
Reason :
Alcohols leading to conjugated alkenes are dehydrated to a greater extent.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323100 At 413 K , ethanol is dehydrated to produce ethoxyethane.
\(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{OH} \xrightarrow[413 \mathrm{~K}]{\mathrm{H}_{2} \mathrm{SO}_{4}} \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OC}_{2} \mathrm{H}_{5}\)
Read the statements given below, and choose the option containing the correct statements.
I. Such a reaction is suitable for the preparation of ethers having primary alkyl groups only.
II. The mechanism involves the following sequence Protonation of alcohol \(\rightarrow\) Attack of another alcohol molecule on protonated alcohol \(\rightarrow\) Deprotonation.
III. At 443 K , the same reaction would produce ethene as the major product.

1 I, II
2 II, III
3 I, III
4 I, II, and III
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323101 When a tertiary alcohol ' A ' \({\mathrm{\left(\mathrm{C}_{4} \mathrm{H}_{10} \mathrm{O}\right)}}\) reacts with \({\mathrm{20 \%\, \mathrm{H}_{3} \mathrm{PO}_{4}}}\) at 358 K , it gives a compound 'B' \({\mathrm{\left(\mathrm{C}_{4} \mathrm{H}_{8}\right)}}\) as a major product. The IUPAC name of the compound ' \({\mathrm{B}}\) ' is

1 But-1-ene
2 But-2-ene
3 Cyclobutane
4 2-Methylpropene
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323098 The relative rate of acid catalyzed dehydration of following alcohols would be
supporting img

1 \({\rm{III}}\,{\rm{ > }}\,{\rm{II}}\,{\rm{ > }}\,{\rm{IV}}\,{\rm{ > }}\,{\rm{I}}\)
2 \({\rm{III}}\,{\rm{ > }}\,{\rm{IV}}\,{\rm{ > }}\,{\rm{I}}\,{\rm{ > }}\,{\rm{II}}\)
3 \({{\rm{III > I > IV > II}}}\)
4 \({\rm{III}}\,{\rm{ > }}\,{\rm{II}}\,{\rm{ > }}\,{\rm{I}}\,\,{\rm{ > }}\,\,{\rm{IV}}\)
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323099 Assertion :
The ease of dehydration of the following alcohols is
supporting img
Reason :
Alcohols leading to conjugated alkenes are dehydrated to a greater extent.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323100 At 413 K , ethanol is dehydrated to produce ethoxyethane.
\(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{OH} \xrightarrow[413 \mathrm{~K}]{\mathrm{H}_{2} \mathrm{SO}_{4}} \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OC}_{2} \mathrm{H}_{5}\)
Read the statements given below, and choose the option containing the correct statements.
I. Such a reaction is suitable for the preparation of ethers having primary alkyl groups only.
II. The mechanism involves the following sequence Protonation of alcohol \(\rightarrow\) Attack of another alcohol molecule on protonated alcohol \(\rightarrow\) Deprotonation.
III. At 443 K , the same reaction would produce ethene as the major product.

1 I, II
2 II, III
3 I, III
4 I, II, and III
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323101 When a tertiary alcohol ' A ' \({\mathrm{\left(\mathrm{C}_{4} \mathrm{H}_{10} \mathrm{O}\right)}}\) reacts with \({\mathrm{20 \%\, \mathrm{H}_{3} \mathrm{PO}_{4}}}\) at 358 K , it gives a compound 'B' \({\mathrm{\left(\mathrm{C}_{4} \mathrm{H}_{8}\right)}}\) as a major product. The IUPAC name of the compound ' \({\mathrm{B}}\) ' is

1 But-1-ene
2 But-2-ene
3 Cyclobutane
4 2-Methylpropene
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323098 The relative rate of acid catalyzed dehydration of following alcohols would be
supporting img

1 \({\rm{III}}\,{\rm{ > }}\,{\rm{II}}\,{\rm{ > }}\,{\rm{IV}}\,{\rm{ > }}\,{\rm{I}}\)
2 \({\rm{III}}\,{\rm{ > }}\,{\rm{IV}}\,{\rm{ > }}\,{\rm{I}}\,{\rm{ > }}\,{\rm{II}}\)
3 \({{\rm{III > I > IV > II}}}\)
4 \({\rm{III}}\,{\rm{ > }}\,{\rm{II}}\,{\rm{ > }}\,{\rm{I}}\,\,{\rm{ > }}\,\,{\rm{IV}}\)
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323099 Assertion :
The ease of dehydration of the following alcohols is
supporting img
Reason :
Alcohols leading to conjugated alkenes are dehydrated to a greater extent.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323100 At 413 K , ethanol is dehydrated to produce ethoxyethane.
\(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{OH} \xrightarrow[413 \mathrm{~K}]{\mathrm{H}_{2} \mathrm{SO}_{4}} \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OC}_{2} \mathrm{H}_{5}\)
Read the statements given below, and choose the option containing the correct statements.
I. Such a reaction is suitable for the preparation of ethers having primary alkyl groups only.
II. The mechanism involves the following sequence Protonation of alcohol \(\rightarrow\) Attack of another alcohol molecule on protonated alcohol \(\rightarrow\) Deprotonation.
III. At 443 K , the same reaction would produce ethene as the major product.

1 I, II
2 II, III
3 I, III
4 I, II, and III
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323101 When a tertiary alcohol ' A ' \({\mathrm{\left(\mathrm{C}_{4} \mathrm{H}_{10} \mathrm{O}\right)}}\) reacts with \({\mathrm{20 \%\, \mathrm{H}_{3} \mathrm{PO}_{4}}}\) at 358 K , it gives a compound 'B' \({\mathrm{\left(\mathrm{C}_{4} \mathrm{H}_{8}\right)}}\) as a major product. The IUPAC name of the compound ' \({\mathrm{B}}\) ' is

1 But-1-ene
2 But-2-ene
3 Cyclobutane
4 2-Methylpropene
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323098 The relative rate of acid catalyzed dehydration of following alcohols would be
supporting img

1 \({\rm{III}}\,{\rm{ > }}\,{\rm{II}}\,{\rm{ > }}\,{\rm{IV}}\,{\rm{ > }}\,{\rm{I}}\)
2 \({\rm{III}}\,{\rm{ > }}\,{\rm{IV}}\,{\rm{ > }}\,{\rm{I}}\,{\rm{ > }}\,{\rm{II}}\)
3 \({{\rm{III > I > IV > II}}}\)
4 \({\rm{III}}\,{\rm{ > }}\,{\rm{II}}\,{\rm{ > }}\,{\rm{I}}\,\,{\rm{ > }}\,\,{\rm{IV}}\)
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323099 Assertion :
The ease of dehydration of the following alcohols is
supporting img
Reason :
Alcohols leading to conjugated alkenes are dehydrated to a greater extent.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323100 At 413 K , ethanol is dehydrated to produce ethoxyethane.
\(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{OH} \xrightarrow[413 \mathrm{~K}]{\mathrm{H}_{2} \mathrm{SO}_{4}} \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OC}_{2} \mathrm{H}_{5}\)
Read the statements given below, and choose the option containing the correct statements.
I. Such a reaction is suitable for the preparation of ethers having primary alkyl groups only.
II. The mechanism involves the following sequence Protonation of alcohol \(\rightarrow\) Attack of another alcohol molecule on protonated alcohol \(\rightarrow\) Deprotonation.
III. At 443 K , the same reaction would produce ethene as the major product.

1 I, II
2 II, III
3 I, III
4 I, II, and III
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323101 When a tertiary alcohol ' A ' \({\mathrm{\left(\mathrm{C}_{4} \mathrm{H}_{10} \mathrm{O}\right)}}\) reacts with \({\mathrm{20 \%\, \mathrm{H}_{3} \mathrm{PO}_{4}}}\) at 358 K , it gives a compound 'B' \({\mathrm{\left(\mathrm{C}_{4} \mathrm{H}_{8}\right)}}\) as a major product. The IUPAC name of the compound ' \({\mathrm{B}}\) ' is

1 But-1-ene
2 But-2-ene
3 Cyclobutane
4 2-Methylpropene