Class 12 Chemistry ISC Alcohol,Phenol and Ether Board Questions
Here we provide Class 12 chemistry important notes,board questions and predicted questions with Answers for chapter Alcohol,Phenols and Ethers. These important notes,board questions and predicted questions are based on ISC board curriculum and correspond to the most recent Class 12 chemistry syllabus. By practising these Class 12 materials, students will be able to quickly review all of the ideas covered in the chapter and prepare for the Class 12 Board examinations as well as other entrance exams such as NEET and JEE.
2020
Q1
(i) Give balanced chemical equations for the following reactions :
(1) Phenol is treated with ice cold alkaline solution of benzene diazonium chloride.
(2) Diethyl ether is treated with phosphorous pentachloride,
(3) Ethyl alcohol is treated with thionyl chloride.
(ii) Give one chemical test each to distinguish between the following pairs of compounds:
(1) Ethanol and dimethyl ether
(2) Propan-1-ol and propan-2-ol
solutions
(1) Phenol is treated with ice cold alkaline solution of benzene diazonium chloride.
(2) Diethyl ether is treated with phosphorous pentachloride,
(3) Ethyl alcohol is treated with thionyl chloride.
(ii) Give one chemical test each to distinguish between the following pairs of compounds:
(1) Ethanol and dimethyl ether
(2) Propan-1-ol and propan-2-ol
solutions
OR
Q1
Write chemical equations to illustrate the following name reactions:
(1) Williamson's synthesis
(2) Esterification reaction
solutions
(1) Williamson's synthesis
(2) Esterification reaction
solutions
2019
Q1
How will you obtain the following (give balanced chemical equations):
(i) Benzene from phenol
(ii) Iodoform from ethanol
solutions
(i) Benzene from phenol
(ii) Iodoform from ethanol
solutions
OR
Q1
How will you obtain the following (give balanced chemical equations):
(i) Salicylaldehyde from phenol.
(ii) Propan-2-ol from Grignard's reagent
solutions
(i) Salicylaldehyde from phenol.
(ii) Propan-2-ol from Grignard's reagent
solutions
2018
Q1
(a) How will you obtain the following? (Give balanced equation)
(i) Picric acid from phenol
(ii) Ethyl chloride from diethyl ether
(b) How will you obtain the following? (Give balanced equation)
(i) Anisole from phenol
(ii) Ehtyl acetate from ethanol
solutions
(i) Picric acid from phenol
(ii) Ethyl chloride from diethyl ether
(b) How will you obtain the following? (Give balanced equation)
(i) Anisole from phenol
(ii) Ehtyl acetate from ethanol
solutions
Q2
Give a balanced chemical equation to convert methyl cyanide to ethyl alcohol
solutions
solutions
2017
Q1
Why do alcohols possess higher boiling points as compared to those of corresponding alkanes
solutions
solutions
Q2
(a) Give balanced equations for the following name reactions:
(ii) Williamson's synthesis
(b) Give chemical test to distinguish:
(i) Ethyl alcohol and sec-propyl alcohol
solutions
(ii) Williamson's synthesis
(b) Give chemical test to distinguish:
(i) Ethyl alcohol and sec-propyl alcohol
solutions
2016
Q1
Glycerol (propane 1,2,3 triol) is more viscous than ethylene glycol (ethane 1,2,diol).Explain
solutions
solutions
Q2
(i) dimethyl ether and ethyl alcohol
(c) (i) Write the structure of three ethers with molecular formula C4H10O
solutions
(c) (i) Write the structure of three ethers with molecular formula C4H10O
solutions
Q3
Give balanced equations for the following reactions:
Diethyl ether with phosphorous pentachloride
solutions
Diethyl ether with phosphorous pentachloride
solutions
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