An acid among the following acids raises the acidity of phenol is:

1. Dil. H₂SO₄       

2. Dil. HCl           

3. Conc. H₂SO₄           

4. Conc. CH₃COOH

; Compounds (X) and (Y) can be differentiated by:
(1) ${\mathrm{H}}_3{\mathrm{O}}^{\oplus }$, NaOI

(2) ${\mathrm{H}}_3{\mathrm{O}}^{\oplus }$, then Fehling test

(3) ${\mathrm{H}}_3{\mathrm{O}}^{\oplus }$, then Na

(4) Both (b) and (c)

Test to differentiate between (CH₃OH) and (Ph-OH) is/are:

1. Litmus test

2. FeCl₃

3. Br₂/H₂O

4. All of these

Methanol and ethanol can be distinguished by the following:

1. By reaction with metallic sodium.

2. By reaction with caustic soda.

3. By heating with iodine and washing soda.

4. By heating with zinc and inorganic mineral acid.

Methylated spirit is:

1. methanol containing some pyridine

2. ethanol containing some methanol

3. pure methanol

4.  95% methanol

Absolute alcohol is prepared from rectified spirit by:

(1) fractional distillation

(2) steam distillation

(3) azeotropic distillation

(4) vacuum distillation

Ethyl alcohol is denatured by:

(1) methanol and formic acid

(2) KCN

(3) CH₃OH and C₆H₆

(4) CH₃OH and pyridine

Glycerol has:

1. 3 primary alcoholic groups

2. 3 secondary alcoholic groups

3. 1 primary alcoholic group and 2 secondary alcoholic groups

4. 2 primary alcoholic groups and 1 secondary alcoholic group

Which of the following reagents can convert acetic acid into ethanol?

(1) Sn + HCl

(2) H₂ + Pt

(3) LiAlH₄ + ether

(4) Na + alcohol