Identify the wrong statement. 

• Salicylic acid is a monobasic acid

• Methyl salicylate is an ester

• Salicylic acid gives violet colour with neutral ferric chloride as well as brisk effervescence with sodium bicarbonate

• Methyl salicylate does not occur in mineral oils

The number of mesa forms in the following compound is

$\mathrm{HOOC}·\mathrm{CH}\left({\mathrm{CH}}_3\right)·\mathrm{CH}\left(\mathrm{OH}\right)·\mathrm{CHCl}·\mathrm{CH}\left(\mathrm{OH}\right)\mathrm{CH}\left({\mathrm{CH}}_3\right)·\mathrm{COOH}$

• 3

• 4

• 8

• 16

The compound 'C' in the following reaction is

${\mathrm{C}}_7{\mathrm{H}}_8\stackrel{3{\mathrm{Cl}}_2/∆}{\to } \mathrm{A} \stackrel{{\mathrm{Br}}_2/ \mathrm{Fe}}{\to } \mathrm{B} \stackrel{ \mathrm{Zn} / \mathrm{HCl}}{\to } \mathrm{C}$

• o-bromotoluene

• m-bromotoluene

• p-bromotoluene

• 3-bromo-2, 4, 6-trichlorotoluene

Compound (A) (molecular formula C₃H₈O) is treated with acidified potassium dichromate to form a product B (molecular formula C₃H₆O). 'B' forms a shining silver mirror on warming with ammoniacal silver nitrate. 'B' when treated with an aqueous solution of H₂NCONHNH₂ · HCl and sodium acetate gives a product C'. Identify the structure of 'C

• ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CH} ={\mathrm{NNHCONH}}_2$

• $({\mathrm{CH}}_3{)}_2\mathrm{C} = {\mathrm{NNHCONH}}_2$

• $({\mathrm{CH}}_3{)}_2\mathrm{C} ={\mathrm{NCONHNH}}_2$

• ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CH}= {\mathrm{NCONHNH}}_2$

The decreasing order of basic characters of the three amines and ammonia is

• NH₃ > CH₃NH₂ > C₂H₅NH₂ > C₆H₅NH₂

• C₂H₅NH₂ > CH₃NH₂ > NH₃ > C₆H₅NH₂

• C₆H₅NH₂ > C₂H₅NH₂ > CH₃NH₂ > NH₃ 

• CH₃NH₂ > C₂H₅NH₂ > C₆H₅NH₂ > NH₃ 

Tincture of iodine is

• solution of iodine in CCl₄

• solution of iodine in ethanol

• KIO₃

• CHI₃

Benzene diazonium chloride on treatment with hypo phosphorus acid and water in presence of Cu⁺ catalyst produce

• benzene

• toluene

• aniline

• chlorobenzene

Chloramine-T is used as

• antipyretic

• analgesic

• antiseptic

• disinfectant

Benzaldehyde on refluxing with aqueous alcoholic KCN produce

• cyanobenzene

• cyanohydrin

• benzoyl cyanide

• benzoin

50.

Which of the following reagents will be fruitful for separating a mixture of nitrobenzene and aniline?

• aq. NaHCO₃

• H₂O

• aq. HCl

• aq. NaOH