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) 

Resorcinol and conc. H₂SO₄ in presence of phthalic anhydride produce a compound which is:

1. a dye                             

2. an antiseptic

3. an indicator                   

4. a detergent

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

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