91.

The compound which on reaction with aqueous HNO₂ at low temperature produces an oily nitrosoamine is

• methyl amine

• ethyl amine

• diethyl amine

• aniline

Reduction of acetyl chloride with H₂ in presence of Pd gives

• CH₃COCH₃

• C₂H₅OH

• CH₃COOH

• CH₃CHO

Amongst the following the most basic compund is

• benzyl amine

• aniline

• acetanilide

• p -nitroaniline

Polymerisation in which two or more chemically different monomers take part, is called

• addition polymerisation

• co-polymerisation

• chain polymerisation

• homo polymerisation

Strach is the polymer of

• glucose

• fructose

• both (a) and (b)

• None of these

Polythene is an addition polymer of

• methane

• ethane

• ethylene

• acetylene

Which carbohydrate is an essential constituent of plant cells?

• Starch

• Cellulose

• Sucrose

• Vitamins

The deficiency of vitamin -B₁ causes

• beri-beri

• scurvy

• rickets

• anaemia

Which of the following is not present in nucleic acids?

• Uracil

• 2-aminopyridine

• Thymine

• Adenine

Nylon is a

• polyamide

• polyester

• polyethylene

• polypropylene