Quiz for Reactions

Q1: Which reagent is used for the oxidation of primary alcohols to carboxylic acids?

A. Acidified KMnO₄ B. PCl₅ C. LiAlH₄ D. NH₃

Q2: Ethanol reacts with concentrated H₂SO₄ at 170°C to give:

A. Ethene B. Ethane C. Diethyl ether D. Acetic acid

Q3: What is formed when phenol reacts with bromine water?

A. 2,4,6-Tribromophenol B. Bromobenzene C. Benzyl bromide D. No reaction

Q4: Which of the following gives iodoform test?

A. Ethanol B. Methanol C. n-Propanol D. Isopropanol

Q5: Phenol on reaction with dilute HNO₃ gives:

A. Ortho and para nitrophenol B. Only ortho nitrophenol C. Meta nitrophenol D. Nitrobenzene

Q6: Ethers react with HI to give:

A. Alcohol and alkyl iodide B. Carboxylic acid C. Aldehyde D. Phenol

Q7: Which compound reacts fastest with Lucas reagent at room temperature?

A. Tertiary alcohol B. Secondary alcohol C. Primary alcohol D. Phenol

Q8: Phenol reacts with NaOH to form:

A. Sodium phenoxide B. Sodium phenylate C. Phenoxide ion D. All of these

Q9: Alcohols can be converted to aldehydes using:

A. PCC B. NaBH₄ C. LiAlH₄ D. H₂/Pd

Q10: Which alcohol on oxidation gives acetone?

A. Isopropanol B. Ethanol C. Methanol D. n-Propanol

Q11: Phenol gives coloured complex with neutral FeCl₃ due to:

A. Phenolic OH group B. Aromatic ring C. Acidic nature D. Hydroxyl group only

Q12: Which product is formed when methanol reacts with sodium?

A. Sodium methoxide and hydrogen B. Methane C. Methyl iodide D. Sodium methanoate

Q13: What is formed when phenol is treated with diazonium salt?

A. Azo dye B. Aniline C. Benzene D. Chlorobenzene

Q14: Ethers show cleavage with:

A. HI and HBr B. HCl C. HNO₃ D. Dilute H₂SO₄

Q15: Which compound gives white precipitate with bromine water?

A. Phenol B. Aniline C. Benzene D. Ethanol

Q16: Diethyl ether reacts with HI to give:

A. Ethanol and ethyl iodide B. Acetone C. Methanol and methyl iodide D. No reaction

Q17: Ethylene glycol reacts with periodic acid to give:

A. Formaldehyde B. Acetic acid C. Oxalic acid D. Methanol

Q18: Which of the following does not react with Lucas reagent?

A. Methanol B. Isopropanol C. Tert-butanol D. Butanol

Q19: Phenol can be distinguished from alcohols using:

A. FeCl₃ solution B. Tollen’s reagent C. Iodoform test D. Benedict’s reagent

Q20: Phenol reacts with CHCl₃ and NaOH to form:

A. Salicylaldehyde B. Chlorobenzene C. Benzaldehyde D. Benzoic acid