Separation of Organic mixtures

Napthalene and benzoic acid can be separated by

• ether

• NaOH

• HCl

• NaHCO3

Phthalic acid is a highly polar compound. Phthalic acid and benzoic acid can be separated by

• ether

• NaOH

• HCl

• NaHCO3

The intermediate formed in the preparation of methyl orange is

• Nitronium ion

• Nitrosonium ion

• Anilinium ion

The dye shown here can be prepared from

• Aniline and beta naphthol

• Aniline and alpha naphthol

• dimethylaniline and alpha naphthol

• Nitrobenzene and beta naphthol

The nitrating mixture produces

• Nitronium ion

• ntrosonium ion

Which reagent is used to convert aniline to diazonium salt?

• Nitric acid

• Nitrous acid

• Sulfuric acid

Aniline can be separated from phenol using:

• NaHCO3

• Dilute HCl

• Conc. HNO3

• Ether

State whether true or false. Diethyl ether is a polar solvent.

• True

• False

State whether true or false. When treated with HCl, Aniline in ether solution forms 

Anilinium ion and goes to the aqueous layer.

• True

• False

Consider a mixture of Phenol and Benzoic acid. Phenol is less acidic than benzoic acid and so it doesn’t react with sodium bicarbonate. Only benzoic acid reacts with it and gets dissolved as sodium benzoate. State whether True or False.

• True

• False

• Partially correct