Benzoic acid gives benzene on being heated with X and phenol gives benzene on being heated with Y. Therefore, X and Y are respectively                                                              

1. Sodalime and copper

2. Zn dust and NaOH

3. Cu and sodalime

4. Sodalime and zinc dust

In the below reaction, product 'P' is:

1.		2.
3.		4.

Oxalic acid on treatment with conc. H₂SO₄ gives:

1. CO + H₂O₂                           

2.  H₂O +CO+CO₂

3. HCOOH + CO₂                       

4.  HCOOH + CO₂ +O₂

Benzene sulphonic acid on treating with P₂O₅ gives:

1. salicylic acid 

2. benzoic acid

3. acid anhydride

4. sodium benzoate

The IUPAC name of tartaric acid is:

1. 2,3-dihydroxy butane-1, 4-dioic acid

2. 1,4-dihydroxy butane-2-3-dioic acid

3. butane-1 4-dicarboxylic acid

4. none of the above