When an ether is treated with P₂S₅ we get:

(1) thio-alcohol

(2) thio-ester

(3) thio-ether

(4) thio-aldehyde

Which enzyme catalyzes the conversion of glucose to ethanol?

1. Zymase

2. Diastase

3. Maltase

4. Invertase

Denatured spirit is mainly used as a:

(1) good fuel

(2) drug

(3) solvent in preparing varnishes

(4) material in the preparation of oil

The products of combustion of an aliphatic thiol (RSH) at 298K are:-

(1) CO₂(l), H₂O(g)andSO₂(g)

(2) CO₂(g), H₂O(g)andSO₂(g)

(3) CO₂(l), H₂O(l)andSO₂(g)

(4) CO₂(g), H₂O(l)andSO₂(l)

Carbolic acid is the name used for:

1. Opium 

2. Phenol

3. Chloroform

4. H₂CO₃

When phenol is treated with excess bromine water, it gives:

(1) m-bromophenol

(2) o- and p-bromophenol

(3) 2,4-dibromophenol

(4) 2,4,6-tribromophenol

Phenol on oxidation gives chloranil. The oxidant used is:

1. K₂S₂O₈

2. KMnO₄

3. KCIO₃ + HCl

4. none of these

A characteristic group test for phenolic gp. is:

1. Liebermann's nitroso reaction

2. coupling with diazonium salt

3. aqueous FeCl3

4. all of the above

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

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 ($\stackrel{\oplus }{\mathrm{C}}\mathrm{HO}$)