WorksheetsAlcohols, Phenols and Ethers
Total questions: 15
Worksheet time: 11mins
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
11. Assertion : When phenol is treated with aqueous solutions of halogens, nuclear polyhalogen derivatives are obtained
Reason : In aqueous solutions, phenol gets ionised to give phenoxide ion which is more reactive than phenol towards electrophillic substitution reactions
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
12. Assertion : Phenolic ethers should be prepared b treating sodium phenoxide with alkyl halide
Reason : Aryl halides are less reactive towards nucleophilic substitution reactions than alkyl halides
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
13. Assertion : The melting point of 0-nitrophenol is much lower than that of p-nitrophenol
Reason : The - OH and - NO2 groups present in o-positions in o-nitrophenol cause steric hindrance
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
14. Assertion : Phenol gives a violet colouration with neutral ferric chloride
Reason : Phenols show keto-enol isomerism and exist mostly in the enolic form
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
15. Assertion : Ethers do not possess -OH groups and do not form any type of hydrogen bonding
Reason : Ethers contain hydrogen, directly bonded to oxygen
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
