Phenol can be converted into salicylic acid by

1. Etard's reaction

2. Kolbe's reaction

3. Phenol with CCl₄ in basic medium

4. both (2) and (3) 

Phenol is weakly acidic but does not react with NaHCO₃ like carboxylic acids hence:-

1. phenol is weaker than carbonic acid

2. phenol is stronger than carbonic acid

3. phenol is stronger than carboxylic acid

4. none of the above

An organic compound C₇H₈O is neither soluble in NaOH nor gives blue colour with FeCl₃, is:

(1) C₆H₅.CH₂OH                 

(2) ${\mathrm{C}}_6{\mathrm{H}}_4{<}_{\mathrm{OH}}^{{\mathrm{CH}}_3}$

(3) C₆H₅.OCH₃                   

(4) none of these

The electrophile involved in the above reaction is:
1. Dichloromethyl cation ($\stackrel{\oplus }{\mathrm{C}}{\mathrm{HCl}}_2$)
2. Dichlorocarbene (:CCl₂)
3. Trichloromethyl anion ($\stackrel{⊝}{\mathrm{C}}{\mathrm{Cl}}_3$)
4. Formyl cation ($\stackrel{\oplus }{\mathrm{C}}\mathrm{HO}$)

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

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

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