CBSE Class 12 Chemistry Alcohols Phenole And Ethers Worksheet Set C

Q.1 Give the IUPAC name of the following.

CH3-C (CH3) =CH-CH2OH

Ans:-3-Methyl But-2-en 1-ol

Q.2 Phenols are much more acidic than alcohols. Why

Ans:-Due to electron with drowning nature of ph-group.

Q3 Give the IUPAC name of the following compound:

Solution :

2 − Bromo-3-methyl-but-2-ene-1-ol.

Q.4 What happen when phenol is treated with excess of bromine(aq).

Ans It gives 2,4,6-tribromo phenol.

Q.5 Write chemical equation Williamson synthesis.

Ans- R-X+R- O- Na ---------→ R-O-R + NaCl

Q.6 Mention one uses of methanol.

Ans – (i) As a denaturant for ethanol

Q.7 The boiling point of ethanol is higher than that methoxy methane.

Ans-Ethanol has inter molecular hydrogen bonding, methoxymehane does not have H-bonding.

Q.8 Name a substance that can be used as an antiseptic as well as a disinfectant.

Ans: Phenol can be used as an antiseptic as well as a disinfectant. 0.1% Soln of phenol is used as an antiseptic & 1% Soln of phenol is used as a disinfectant.

Q.9 Write the IUPAC name.

(CH3)3 C-OH

Ans- 2-methyl-2-propanol

Q.10 What is Nucleophiles.

Ans- The species which has high electrons density.

Q.11 Which catalyst are used in Friedel craft reaction?

Ans- Anh.AlCl3.

Q.12 Write a test to distinguish between primary, secondary and alcohols?

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