Which of the following compounds produces a pink colour when combined with Schiff's reagent?

1. CH₃CHO 

2. CH₃CH₂COOH

3. C₃H₅COOH 

4. C₆H₅COC₆H₅

Given the reaction:
 + 

Which of the following statements is correct?

1. (b) has a lesser stability

2. (b) is more volatile than (a)

3. (a) is more volatile than (b)

4. (a) forms higher yields at a lower temperature

The product in the below mentioned reaction is 

1.		2.
3.		4.

The products A and B in the below mentioned reaction are, respectively:

1.		2.
3.		4.

The ${\mathrm{pK}}_{\mathrm{a}}$ values of some of the acids are given below:

Acid	\(\mathrm{pK_a}\)	Acid	\(\mathrm{pK_a}\)
	-0.6	HI	-10.0
	4.8	\(\mathrm{HC} \equiv \mathrm{CH}\)	25
\(\overset{+}{N}H_4\)	9.4	\(H_2S\)	7.0

The correct order of leaving tendency of their conjugate bases is:

1.
2.
3.
4.

Reaction equilibrium will shift towards the right in:

1.		2.
3.		4.

The Wolf Kishner's reduction cannot be applied to:

1.		2.
3.		4.

1. Br₂/KOH, H₂/Pt, CH₃COOH

2. P₂O₅/heat, H₂/Pt, (CH₃CO₂)₂O

3. (CH₃CO)₂O, H₂/Pt, Br₂/KOH

4. Br₂/KOH, CH₃COCl

Which of the following acids is the strongest?

1. CH₃COOH 

2. C₆H₅COOH

3. C₆H₅OH 

4. C₂H₅COOH