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

Consider the reaction scheme given below:

Identify A, X, Y, and Z:

Which one is the most acidic compound ?

Which named reaction involves the formation of an ether by the reaction of an alkoxide ion with an alkyl halide?

1. Alcohol formation reaction

2. Dehydration reaction

3. Williamson alcohol synthesis reaction

4. Williamson ether synthesis reaction