CBSE Class 12 Chemistry Alcohols Phenols And Ethers Worksheet Set 05

Class 12 Chemistry Practice Set: Unit 7 Alcohols, Phenols and Ethers

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ALCOHOLS, PHENOLS AND ETHERS
 
1. Name the following compounds according to the IUPAC system:

CBSE Class 12 Chemistry Alcohols Phenols And Ethers Worksheet Set A 1

2 Account for the following:
 
i) C – O – H bond angle in alcohol is less than tetrahedral angle.
 
ii) C – O bond length in phenol is shorter than that in methanol.
 
iii) C – O – C bond angle in ether is greater than the tetrahedral angle.
 
iv) The boiling points of alcohols and phenols are higher than corresponding alkanes of same molecular mass.
 
v) Among the isomeric alcohols the boiling point follows the order 3 0 < 2 0 < 1 0.
 
vi) Lower alcohols are soluble in water
 
vii) Ethanol is less acidic than methanol.
 
viii) The acidic character of the alcohols follows the order 1 0 > 2 0 > 3 0
 
ix) The reaction of alcohol with acid is carried out in presence of small amount of concentrated H2SO4.
 
x) Reaction of alcohol with acid chloride is carried out in presence of a base pyridine.
 
3. Effect the following conversions:
 
i) Chloro benzene to phenol                      vi) Propene to 1-Propanol
 
ii) Benzene sulphonic acid to phenol          vii) Propene to 2-propanol
 
iii) Ethanol to isopropyl alcohol                 viii) Phenol to anisole
 
iv) Phenol to picric acid                            ix) Phenol to aspirin
 
v) Phenol to p-hydroxy
acetophenone                                        x) Aniline to phenol
 
4. Arrange the following on the increasing property given in bracket:
 
a) Pentan-1-ol, butan-1-ol, butan-2-ol, ethanol, propan-1-ol, methanol (Boiling Point)
 
b) Pentan-1-ol, n-butane, pentanal, Ethoxyethane (Boiling point)
 
c) Propan-1-ol, 2, 4, 6 – trinitro phenol, 3,5 – dinitro phenol, 4-methylphenol (Acidity)
 
d) Ter. Butyl alcohol, isobutyl alcohol, n-butyl alcohol (Acidity)
 
e) 4-nitro phenol, phenol, 2,4,6-trinitro phenol (Acid strength )
 
5. Write short note on the following:
 
i) Hydroboration iv) Kolbe’s reaction
ii) Reimer – Tiemann Reaction. v) Williamson’s synthesis
iii) Friedel-Craft’s reaction
 
6. Write the mechanism of the following:
Acid catalyzed dehydration of ethanol to diethyl ether.

 

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Practice Worksheet and Study Resources for Class 12 Chemistry Unit 7 Alcohols, Phenols and Ethers

Download Practice Sheet: Unit 7 Alcohols, Phenols and Ethers (Class 12 Chemistry)

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