Lucas reagent is a mixture of conc. HCl and \({\rm{ZnC}}{{\rm{l}}_{\rm{2}}}\).
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322986
Assertion : Tertiary alcohols give turbidity immediately with Lucas reagent. Reason : A mixture of conc. \(\mathrm{HI}+\) anhydrous \(\mathrm{ZnCl}_{2}\) is called Lucas reagent.
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 Assertion is incorrect but Reason is correct.
Explanation:
A mixture of concentrated hydrochloric acid (conc. \(\mathrm{HCl}\) ) and anhydrous zinc chloride \(\left(\mathrm{ZnCl}_{2}\right)\) is commonly referred to as the Lucas reagent. Given assertion is true. So the option (3) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322987
The compound which gives turbidity immediately with Lucas reagent at room temperature is
1 butan-1-ol
2 butan-2-ol
3 2-methyl propan-2-ol
4 2-methyl propan-1-ol.
Explanation:
Tertiary alcohol (2-methyl propan-2-ol) gives turbidity immediately with Lucas reagent (conc. \(\mathrm{HCl}+\) anhyd. \(\mathrm{ZnCl}_{2}\) ) at room temperature.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322988
There are three alcohols \(\mathrm{x}, \mathrm{y}, \mathrm{z}\) which have 2,1 and 0 alpha hydrogen atom(s) respectively. Which gives Lucas test immediately?
1 \(\mathrm{z}\)
2 \(\mathrm{y}\)
3 \(\mathrm{x}\)
4 None of these will give Lucas test
Explanation:
\({\text{x = RC}}{{\text{H}}_{\text{2}}}{\text{OH;}}\quad {\text{y = }}{{\text{R}}_{\text{2}}}{\text{CHOH}}\) \({\text{Z}} = {{\text{R}}_{\text{3}}}{\text{C}} - {\text{OH}}\). Primary alcohols give Lucas test after heating. \(2^{\circ}\) alcohols give Lucas test after 5 minutes. \(3^{\circ}\) alcohols give Lucas test immediately.
Lucas reagent is a mixture of conc. HCl and \({\rm{ZnC}}{{\rm{l}}_{\rm{2}}}\).
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322986
Assertion : Tertiary alcohols give turbidity immediately with Lucas reagent. Reason : A mixture of conc. \(\mathrm{HI}+\) anhydrous \(\mathrm{ZnCl}_{2}\) is called Lucas reagent.
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 Assertion is incorrect but Reason is correct.
Explanation:
A mixture of concentrated hydrochloric acid (conc. \(\mathrm{HCl}\) ) and anhydrous zinc chloride \(\left(\mathrm{ZnCl}_{2}\right)\) is commonly referred to as the Lucas reagent. Given assertion is true. So the option (3) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322987
The compound which gives turbidity immediately with Lucas reagent at room temperature is
1 butan-1-ol
2 butan-2-ol
3 2-methyl propan-2-ol
4 2-methyl propan-1-ol.
Explanation:
Tertiary alcohol (2-methyl propan-2-ol) gives turbidity immediately with Lucas reagent (conc. \(\mathrm{HCl}+\) anhyd. \(\mathrm{ZnCl}_{2}\) ) at room temperature.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322988
There are three alcohols \(\mathrm{x}, \mathrm{y}, \mathrm{z}\) which have 2,1 and 0 alpha hydrogen atom(s) respectively. Which gives Lucas test immediately?
1 \(\mathrm{z}\)
2 \(\mathrm{y}\)
3 \(\mathrm{x}\)
4 None of these will give Lucas test
Explanation:
\({\text{x = RC}}{{\text{H}}_{\text{2}}}{\text{OH;}}\quad {\text{y = }}{{\text{R}}_{\text{2}}}{\text{CHOH}}\) \({\text{Z}} = {{\text{R}}_{\text{3}}}{\text{C}} - {\text{OH}}\). Primary alcohols give Lucas test after heating. \(2^{\circ}\) alcohols give Lucas test after 5 minutes. \(3^{\circ}\) alcohols give Lucas test immediately.
Lucas reagent is a mixture of conc. HCl and \({\rm{ZnC}}{{\rm{l}}_{\rm{2}}}\).
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322986
Assertion : Tertiary alcohols give turbidity immediately with Lucas reagent. Reason : A mixture of conc. \(\mathrm{HI}+\) anhydrous \(\mathrm{ZnCl}_{2}\) is called Lucas reagent.
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 Assertion is incorrect but Reason is correct.
Explanation:
A mixture of concentrated hydrochloric acid (conc. \(\mathrm{HCl}\) ) and anhydrous zinc chloride \(\left(\mathrm{ZnCl}_{2}\right)\) is commonly referred to as the Lucas reagent. Given assertion is true. So the option (3) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322987
The compound which gives turbidity immediately with Lucas reagent at room temperature is
1 butan-1-ol
2 butan-2-ol
3 2-methyl propan-2-ol
4 2-methyl propan-1-ol.
Explanation:
Tertiary alcohol (2-methyl propan-2-ol) gives turbidity immediately with Lucas reagent (conc. \(\mathrm{HCl}+\) anhyd. \(\mathrm{ZnCl}_{2}\) ) at room temperature.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322988
There are three alcohols \(\mathrm{x}, \mathrm{y}, \mathrm{z}\) which have 2,1 and 0 alpha hydrogen atom(s) respectively. Which gives Lucas test immediately?
1 \(\mathrm{z}\)
2 \(\mathrm{y}\)
3 \(\mathrm{x}\)
4 None of these will give Lucas test
Explanation:
\({\text{x = RC}}{{\text{H}}_{\text{2}}}{\text{OH;}}\quad {\text{y = }}{{\text{R}}_{\text{2}}}{\text{CHOH}}\) \({\text{Z}} = {{\text{R}}_{\text{3}}}{\text{C}} - {\text{OH}}\). Primary alcohols give Lucas test after heating. \(2^{\circ}\) alcohols give Lucas test after 5 minutes. \(3^{\circ}\) alcohols give Lucas test immediately.
Lucas reagent is a mixture of conc. HCl and \({\rm{ZnC}}{{\rm{l}}_{\rm{2}}}\).
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322986
Assertion : Tertiary alcohols give turbidity immediately with Lucas reagent. Reason : A mixture of conc. \(\mathrm{HI}+\) anhydrous \(\mathrm{ZnCl}_{2}\) is called Lucas reagent.
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 Assertion is incorrect but Reason is correct.
Explanation:
A mixture of concentrated hydrochloric acid (conc. \(\mathrm{HCl}\) ) and anhydrous zinc chloride \(\left(\mathrm{ZnCl}_{2}\right)\) is commonly referred to as the Lucas reagent. Given assertion is true. So the option (3) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322987
The compound which gives turbidity immediately with Lucas reagent at room temperature is
1 butan-1-ol
2 butan-2-ol
3 2-methyl propan-2-ol
4 2-methyl propan-1-ol.
Explanation:
Tertiary alcohol (2-methyl propan-2-ol) gives turbidity immediately with Lucas reagent (conc. \(\mathrm{HCl}+\) anhyd. \(\mathrm{ZnCl}_{2}\) ) at room temperature.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322988
There are three alcohols \(\mathrm{x}, \mathrm{y}, \mathrm{z}\) which have 2,1 and 0 alpha hydrogen atom(s) respectively. Which gives Lucas test immediately?
1 \(\mathrm{z}\)
2 \(\mathrm{y}\)
3 \(\mathrm{x}\)
4 None of these will give Lucas test
Explanation:
\({\text{x = RC}}{{\text{H}}_{\text{2}}}{\text{OH;}}\quad {\text{y = }}{{\text{R}}_{\text{2}}}{\text{CHOH}}\) \({\text{Z}} = {{\text{R}}_{\text{3}}}{\text{C}} - {\text{OH}}\). Primary alcohols give Lucas test after heating. \(2^{\circ}\) alcohols give Lucas test after 5 minutes. \(3^{\circ}\) alcohols give Lucas test immediately.