Dry distillation of the mixture of calcium formate and calcium acetate gives

• acetone

• acetaldehyde

• formaldehyde

• formic acid

Which one of the following will react with acetamide to give methyl amine?

• PCl₅

• NaOH + Br₂

• Soda lime

• H₂SO₄

The general formula (RCO)₂O represents

• a ketone

• an ether

• an acid anhydride

• an ester

Which of the following is an example of condensation polymers?

• Polythene

• PVC

• Orlon

• Terylene

95.

Natural rubber is formed by polymerisation of which of the following?

• Phenol

• Isoprene

• Chloroprene

• Styrene

Which of the following is the thermosetting plastic?

• Nylon

• Bakelite

• Polythene

• Polystyrene

Carbohydrates are stored in human body as

• glucose

• glycogen

• starch

• fructose

DNA contains the sugar

• Deoxyribose

• Ribose

• D-fructose

• D-glucose

The helical structure of proteins is stabilised by

• peptide bonds

• dipeptide bond

• hydrogen bond

• van der Waal's forces

Proteins are hydrolysed by enzymes to give

• dihydroxy acids

• amino acids

• amines

• carboxylic acids