Which of the following reagents may be used to distinguish between phenol and benzoic acid?

1. Aqueous NaOH

2. Tollens reagent

3. Molisch reagent

4. Neutral FeCl₃

In the given transformation, which of the following is the most appropriate reagent ?

(1) Zn-Hg/HCl

(2) Na, Liq. NH₃

(3) NaBH₄

(4) NH₂NH₂,OH

An unknown alcohol is treated with the “Lucas reagent” to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts the fastest and by what mechanism:

1. secondary alcohol by S_N²

2. tertiary alcohol by S_N²

3. secondary alcohol by S_N¹

4. tertiary alcohol by S_N¹

Sodium phenoxide when heated with CO₂ under pressure at 125°C yields a product which on acetylation produces C.

The major product C would be :

(1) 

(2) 

(3) 

(4) 

A compound with molecular formula C₄H₁₀O₃ is converted by the action of acetyl chloride to a compound with molar mass 190. The original compound has: 

(1) one OH group

(2) two OH groups

(3) three OH groups

(4) no OH group

Phenyl ethyl ether with concentrated hydrobromic acid on boiling yields:-

1. Phenol and ethyl bromide

2. Bromobenzene and ethanol

3. Phenol and ethane

4. Bromobenzene and ethane

The compound that does not react with sodium is-

1. CH₃CHOHCH₃

2. CH₃ —O—CH₃

3. CH₃COOH

4. C₂H₅OH

An organic compound A reacts with sodium metal and forms B. On heating with conc. H₂SO₄, A gives diethyl ether. So A and B are:
1. C₃H₇OH and CH₃ONa
2. CH₃OH and CH₃ONa
3. C₄H₉OH and C₄H₉ONa
4. C₂H₅OH and C₂H₅ONa

Phenol on treatment with dil. HNO₃ at room temperature gives-

1.
2.
3.
4.	All of the above

Identify A and predict the type of reactions


1.   and substitution reaction

2. and elimination addition reaction

3.   and cine substitution reaction

4.      and cine substitution reaction