brodidit for students
Alcohols and phenols
Class 12 · Chemistry · 5 questions
Name: ____________________ Date: ____________
Oxidation of a primary alcohol with acidified dichromate gives first:
- A An ester
- B An alkane
- C A ketone
- D An aldehyde
Oxidation of a secondary alcohol gives a:
- A Ketone
- B Alkane
- C Carboxylic acid
- D Aldehyde
Phenol is:
- A Strongly basic
- B Strongly acidic
- C Weakly acidic
- D Neutral
Ethanol and ethanoic acid react in the presence of an acid catalyst to form:
- A An ester
- B An ether
- C An aldehyde
- D An alkene
Methanol is poisonous because it is metabolised to:
- A Water only
- B Ethanol
- C Methanal and methanoic acid
- D Glucose
Answer key
1. D, 2. A, 3. C, 4. A, 5. C
Primary alcohols give aldehydes and then carboxylic acids.
Secondary alcohols oxidise to ketones.
Phenol is a weak acid, stronger than alcohols.
This is esterification, giving ethyl ethanoate.
These products damage the optic nerve and other tissues.