Alcohols, Phenols and Ethers

1. Which one of the following will produce a primary alcohol by reacting with Methyl magnesium iodide?

• Acetone

• Methyl cyanide

• Ethylene oxide

• Ethyl acetate

2. Phenol is less acidic than __________

• acetic acid

• p-methoxyphenol

• None of these

• ethanol

3. Which process does not occur during the formation of CHCl3 from ethanol and bleaching powder?

• Hydrolysis

• Oxidation

• Elimination

• Chlorination

4. Chlorine reacts with ethanol to give ________________.

• diethyl chloride

• chloroform

• acetaldehyde

• chloral

5. A compound X with molecular formula C3H8O can be oxidised to Y with molecular formula C3H6O2. X is most likely ________

• a primary alcohol

• a secondary alcohol

• an aldehyde

• a ketone

6. The benzoylation of phenols in the presence of alkalis is known as ___________ reaction.

• Esterification

• Etherification

• Gattermann

• Schotten-Baumann

7. The higher boiling points of alcohols are due to the existence of _________ between their molecules.

• oxygen bonding

• lonepair-shared pair bonding

• hydrogen bonding

• p-p interaction

8. On standing, phenol turns pink due to its ________ into phenoquinone.

• reduction

• oxidation

• elimination

• electrolysis

9. The questions given below consist of an Assertion and a Reason. You have to choose answer (a) , (b) , (c) or (d) according to the following clue:

Assertion : Phenols are less soluble in water than alcohols

Reason : - OH group present in phenols is not polar

• If both Assertion and Reason are correct and Reason is the correct explanation of the Assertion

• If both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion

• If Assertion is correct but Reason is incorrect

• If Assertion is incorrect but reason is correct

10. Assertion : Chlorophenols are weaker acids than phenol

Reason : The - I effect exerted by chlorine is greater than +R effect exerted by it

• If both Assertion and Reason are correct and Reason is the correct explanation of the Assertion

• If both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion

• If Assertion is correct but Reason is incorrect

• If Assertion is incorrect but Reason is correct