Match List-I with List-II
|
List-I Reaction |
List-II Type of reaction |
|
(A) Hydrolysis of Ethyl Chloride |
(I) Substitution reaction |
|
(B) 2-Propanol is treated with Conc.Sulphuric acid |
(II) Addition reaction |
|
(C) Reaction of HCN with Acetone |
(III) Degradation reaction |
|
(D) Treatment of acetamide with NaOH and $Br_2$ |
(IV) Elimination reaction |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A)-(I), (B)-(IV), (C)-(II), (D)-(III)
|
List-I Reaction |
List-II Type of reaction |
|
(A) Hydrolysis of Ethyl Chloride |
(I) Substitution reaction |
|
(B) 2-Propanol is treated with Conc.Sulphuric acid |
(IV) Elimination reaction |
|
(C) Reaction of HCN with Acetone |
(II) Addition reaction |
|
(D) Treatment of acetamide with NaOH and $Br_2$ |
(III) Degradation reaction |
Hydrolysis of Ethyl Chloride
C₂H₅Cl + OH⁻ → C₂H₅OH + Cl⁻
Here, the Cl atom is replaced by OH⁻, so this is a substitution reaction.
Thus,
Hydrolysis of Ethyl Chloride → Substitution reaction (I)
2-Propanol with Concentrated H₂SO₄
When 2-propanol is heated with concentrated sulphuric acid, dehydration occurs forming propene.
CH₃–CHOH–CH₃ → CH₃–CH=CH₂ + H₂O
Since a molecule of water is removed, this is an elimination reaction.
Thus,
2-Propanol + Conc. H₂SO₄ → Elimination reaction (IV)
Reaction of HCN with Acetone
Acetone reacts with HCN to form cyanohydrin.
(CH₃)₂CO + HCN → (CH₃)₂C(OH)CN
Here, HCN adds across the C=O double bond, so it is an addition reaction.
Thus,
HCN + Acetone → Addition reaction (II)
Acetamide with NaOH and Br₂
Acetamide reacts with bromine and NaOH in Hofmann bromamide reaction, producing a primary amine with one carbon less.
CH₃CONH₂ → CH₃NH₂
Since the carbon chain length decreases, this is a degradation reaction.
Thus,
Acetamide + NaOH + Br₂ → Degradation reaction (III)