Methods to Distinguish between Primary, Secondary and Tertiary Alcohols
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CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322989 The alcohol having molecular formula \(\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{OH}\), when shaken with a mixture of anhydrous \(\mathrm{ZnCl}_{2}\) and conc. \(\mathrm{HCl}\) gives an oily layer product after five minutes. The alcohol is

1 \(\mathrm{H}_{3} \mathrm{C}\left(\mathrm{CH}_{2}\right)_{3} \mathrm{OH}\)
2 \(\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CH}-\mathrm{CH}_{2}-\mathrm{OH}\)
3 \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{C}-\mathrm{OH}\)
4 \(\mathrm{H}_{3} \mathrm{C}-\mathrm{CH}(\mathrm{OH}) \mathrm{CH}_{2}-\mathrm{CH}_{3}\)
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322990 The compound which reacts slowest with Lucas reagent at room temperature is

1 2-Methylpropan-2-ol
2 2-Methylbutan-2-ol
3 Pentan-2-ol
4 Butan-1-ol
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322991 Given below are two statements :
Statement I :
In Lucas test, primary, secondary and tertiary alcohols are distinguished on the basis of their reactivity with conc. \(\mathrm{HCl}+\mathrm{ZnCl}_{2}\), known as Lucas Reagent.
Statement II:
Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent.
In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement I and Statement II are incorrect.
2 Statement I is correct but Statement II is incorrect
3 Statement I is incorrect but Statement II is correct
4 Both Statement I and Statement II are correct
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322992 1-Propanol and 2-propanol can be distinguished by

1 Oxidation with alkaline \(\mathrm{KMnO}_{4}\) followed by reaction with Fehling solution
2 Oxidation with acidic dichromate followed by reaction with Fehling solution
3 Oxidation by heating with copper followed by reaction with Fehling solution
4 Oxidation with concentrated \(\mathrm{H}_{2} \mathrm{SO}_{4}\) followed by reaction with Fehling solution
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322989 The alcohol having molecular formula \(\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{OH}\), when shaken with a mixture of anhydrous \(\mathrm{ZnCl}_{2}\) and conc. \(\mathrm{HCl}\) gives an oily layer product after five minutes. The alcohol is

1 \(\mathrm{H}_{3} \mathrm{C}\left(\mathrm{CH}_{2}\right)_{3} \mathrm{OH}\)
2 \(\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CH}-\mathrm{CH}_{2}-\mathrm{OH}\)
3 \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{C}-\mathrm{OH}\)
4 \(\mathrm{H}_{3} \mathrm{C}-\mathrm{CH}(\mathrm{OH}) \mathrm{CH}_{2}-\mathrm{CH}_{3}\)
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322990 The compound which reacts slowest with Lucas reagent at room temperature is

1 2-Methylpropan-2-ol
2 2-Methylbutan-2-ol
3 Pentan-2-ol
4 Butan-1-ol
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322991 Given below are two statements :
Statement I :
In Lucas test, primary, secondary and tertiary alcohols are distinguished on the basis of their reactivity with conc. \(\mathrm{HCl}+\mathrm{ZnCl}_{2}\), known as Lucas Reagent.
Statement II:
Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent.
In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement I and Statement II are incorrect.
2 Statement I is correct but Statement II is incorrect
3 Statement I is incorrect but Statement II is correct
4 Both Statement I and Statement II are correct
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322992 1-Propanol and 2-propanol can be distinguished by

1 Oxidation with alkaline \(\mathrm{KMnO}_{4}\) followed by reaction with Fehling solution
2 Oxidation with acidic dichromate followed by reaction with Fehling solution
3 Oxidation by heating with copper followed by reaction with Fehling solution
4 Oxidation with concentrated \(\mathrm{H}_{2} \mathrm{SO}_{4}\) followed by reaction with Fehling solution
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322989 The alcohol having molecular formula \(\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{OH}\), when shaken with a mixture of anhydrous \(\mathrm{ZnCl}_{2}\) and conc. \(\mathrm{HCl}\) gives an oily layer product after five minutes. The alcohol is

1 \(\mathrm{H}_{3} \mathrm{C}\left(\mathrm{CH}_{2}\right)_{3} \mathrm{OH}\)
2 \(\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CH}-\mathrm{CH}_{2}-\mathrm{OH}\)
3 \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{C}-\mathrm{OH}\)
4 \(\mathrm{H}_{3} \mathrm{C}-\mathrm{CH}(\mathrm{OH}) \mathrm{CH}_{2}-\mathrm{CH}_{3}\)
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322990 The compound which reacts slowest with Lucas reagent at room temperature is

1 2-Methylpropan-2-ol
2 2-Methylbutan-2-ol
3 Pentan-2-ol
4 Butan-1-ol
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322991 Given below are two statements :
Statement I :
In Lucas test, primary, secondary and tertiary alcohols are distinguished on the basis of their reactivity with conc. \(\mathrm{HCl}+\mathrm{ZnCl}_{2}\), known as Lucas Reagent.
Statement II:
Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent.
In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement I and Statement II are incorrect.
2 Statement I is correct but Statement II is incorrect
3 Statement I is incorrect but Statement II is correct
4 Both Statement I and Statement II are correct
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322992 1-Propanol and 2-propanol can be distinguished by

1 Oxidation with alkaline \(\mathrm{KMnO}_{4}\) followed by reaction with Fehling solution
2 Oxidation with acidic dichromate followed by reaction with Fehling solution
3 Oxidation by heating with copper followed by reaction with Fehling solution
4 Oxidation with concentrated \(\mathrm{H}_{2} \mathrm{SO}_{4}\) followed by reaction with Fehling solution
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322989 The alcohol having molecular formula \(\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{OH}\), when shaken with a mixture of anhydrous \(\mathrm{ZnCl}_{2}\) and conc. \(\mathrm{HCl}\) gives an oily layer product after five minutes. The alcohol is

1 \(\mathrm{H}_{3} \mathrm{C}\left(\mathrm{CH}_{2}\right)_{3} \mathrm{OH}\)
2 \(\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CH}-\mathrm{CH}_{2}-\mathrm{OH}\)
3 \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{C}-\mathrm{OH}\)
4 \(\mathrm{H}_{3} \mathrm{C}-\mathrm{CH}(\mathrm{OH}) \mathrm{CH}_{2}-\mathrm{CH}_{3}\)
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322990 The compound which reacts slowest with Lucas reagent at room temperature is

1 2-Methylpropan-2-ol
2 2-Methylbutan-2-ol
3 Pentan-2-ol
4 Butan-1-ol
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322991 Given below are two statements :
Statement I :
In Lucas test, primary, secondary and tertiary alcohols are distinguished on the basis of their reactivity with conc. \(\mathrm{HCl}+\mathrm{ZnCl}_{2}\), known as Lucas Reagent.
Statement II:
Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent.
In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement I and Statement II are incorrect.
2 Statement I is correct but Statement II is incorrect
3 Statement I is incorrect but Statement II is correct
4 Both Statement I and Statement II are correct
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

322992 1-Propanol and 2-propanol can be distinguished by

1 Oxidation with alkaline \(\mathrm{KMnO}_{4}\) followed by reaction with Fehling solution
2 Oxidation with acidic dichromate followed by reaction with Fehling solution
3 Oxidation by heating with copper followed by reaction with Fehling solution
4 Oxidation with concentrated \(\mathrm{H}_{2} \mathrm{SO}_{4}\) followed by reaction with Fehling solution