Match List-I with List-II.
List-I List-II (A) N2(g) + 3H2(g) → 2NH3(g) (I) Cu (B) CO(g) + 3H2(g) → CH4(g) + H2O(g) (II) Cu/ZnO – Cr2O3 (C) CO(g) + H2(g) → HCHO(g) (III) FexOy + K2O + Al2O3 (D) CO(g) + 2H2(g) → CH3OH(g) (IV) Ni
Choose the correct answer from the options given below :
Match List-I with List-II.
| List-I | List-II |
|---|---|
| (A) N2(g) + 3H2(g) → 2NH3(g) | (I) Cu |
| (B) CO(g) + 3H2(g) → CH4(g) + H2O(g) | (II) Cu/ZnO – Cr2O3 |
| (C) CO(g) + H2(g) → HCHO(g) | (III) FexOy + K2O + Al2O3 |
| (D) CO(g) + 2H2(g) → CH3OH(g) | (IV) Ni |
Choose the correct answer from the options given below :
- (A) – (II), (B) – (IV), (C) – (I), (D) – (III)
- (A) – (II), (B) – (I), (C) – (IV), (D) – (III)
- (A) – (III), (B) – (IV), (C) – (I), (D) – (II)
- (A) – (III), (B) – (I), (C) – (IV), (D) – (II)
The Correct Option is C
Solution and Explanation
Here, we have to match the reactions with their correct catalyst :
∴ Option (C) is correct option.
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Preparation - Alcohols, Phenols and Ethers
Alcohols, phenols, and ethers are organic compounds that can be prepared by various methods.
Preparation of Alcohols:
- Direct hydration of alkenes: Alcohols can be prepared by the addition of water to an alkene in the presence of a strong acid catalyst.
- Reduction of carbonyl compounds: Alcohols can be prepared by the reduction of aldehydes, ketones, or carboxylic acids using reducing agents like NaBH4 or LiAlH4.
- Grignard reaction: Alcohols can be prepared by reacting Grignard reagents with carbonyl compounds.
- Hydroboration-oxidation: Alcohols can be prepared by the hydroboration of alkenes followed by oxidation with an oxidizing agent like H2O2.
Preparation of Phenols:
- Hydrolysis of diazonium salts: Phenols can be prepared by the hydrolysis of diazonium salts, which are formed by the reaction of aniline with nitrous acid.
- Oxidation of sulfonic acids: Phenols can be prepared by the oxidation of sulfonic acids using strong oxidizing agents like potassium permanganate or chromic acid.
Preparation of Ethers:
- Williamson synthesis: Ethers can be prepared by the reaction of an alkoxide ion with a primary alkyl halide or tosylate in the presence of a strong base like NaOH or KOH.
- Dehydration of alcohols: Ethers can be prepared by the dehydration of alcohols in the presence of a strong acid catalyst like H2SO4.
In summary, alcohols, phenols, and ethers can be prepared by a variety of methods, including hydration, reduction, Grignard reaction, hydroboration-oxidation, hydrolysis, oxidation, Williamson synthesis, and dehydration. The choice of the method depends on the availability of starting materials, the desired product, and the conditions of the reaction.