31.

The order of basic strength of the following in aqueous solution is

I. C₆H₅NH₂

II. (CH₃)₃N

III. NH₃

IV. CH₃NH₂

V. (CH₃)₂NH

• IV > I > V > III > II

• II > V > IV > III > I

• V > IV > II > III > I

• IV > III > V > II > I

Observe the following polymers.

I. PHBV

II. Nylon-2-nylon-6

III. Glyptal

IV. Bakelite

Biodegradable polymer(s) from the above is/ are

• III

• I and II

• IV 

• III and IV

Observe the following statements.

I. Sucrose has glycosidic linkage.

II. Cellulose is present in both plants and animals.

III. Lactose contains D-galactose and D-glucose units.

Which of the following statements are correct?

• (I), (II) and (III)

• (I) and (II)

• (II) and (III)

• (I) and (III)

Identify the antioxidant used in foods.

• Aspartame

• Sodium benzoate

• ortho-sulphobenzimide

• Butylated hydroxy toluene

This reaction is known as

• Wurtz-Fittig reaction

• Wurtz reaction

• Fittig reaction

• Friedel-Crafts reaction

What is Z in the following sequence of reaction?

2-methyl-2-bromopropane $\underset{\mathrm{Dry} \mathrm{ether}}{\overset{\mathrm{Mg}}{\to }} \mathrm{X} \stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }$ Z

• Propane

• 2-methyl propene

• 2-methyl propane

• 2-methyl butane

In which of the following reactions, the product is not correct?

• CH₃CHO $\stackrel{{\mathrm{LiAlH}}_4}{\to }$ CH₃CH₂OH

• CH₃COCH₃ $\underset{\mathrm{HCl}}{\overset{\mathrm{Zn}-\mathrm{Hg}}{\to }}$ CH₃(OH)₂CH₃

• CH₃CH₂CHO $\underset{\left(\mathrm{ii}\right) \mathrm{KOH}, \mathrm{ethylene} \mathrm{glycol}/ ∆}{\overset{\left(\mathrm{i}\right) {\mathrm{H}}_2\mathrm{N}-{\mathrm{NH}}_2}{\to }}$ CH₃CH₂CH₃

• CH₃CH₂CHO $\stackrel{{\mathrm{KMnO}}_4}{\to }$ CH₃CH₂COOH

Identify the name of the following reaction:

• Gattermann Koch reaction

• Gattermann reaction

• Stephen reaction

• Etard reaction

What is C in the following sequence of reaction?

CH₃OH $\stackrel{{\mathrm{PCl}}_3}{\to } \mathrm{A} \stackrel{\mathrm{KCN}}{\to } \mathrm{B} \stackrel{\mathrm{Hydrolysis}}{\to }$ C

• CH₃CH₂OH

• CH₃CHO

• CH₃COOH

• HOCH₂-CH₂OH

Yellow dye can be prepared by a coupling reaction of benzene diazonium chloride in acidic medium with X. Identify X from the following.

• Aniline

• Phenol

• Cumene

• Benzene