Practice MCQ Questions and answers on Chemistry-GK

Nylon 66 is produced by the condensation reaction of hexamethylenediamine and adipic acid.

Neoprene is prepared by polymerisation of 2-chloro-1, 3-butadiene.

Neoprene (CR), also called polychloroprene or chloroprene rubber, synthetic rubber produced by the polymerization (or linking together of single molecules into giant, multiple-unit molecules) of chloroprene.

In order to manufacture silicones, alkyl-substituted chlorosilanes are used as starting material. Since dimethylsilane contains —OH group at the end of the chain, polymerization and chain length increases. However, the hydrolysis of alkyl trichlorosilane gives very complex cross linked polymer.

The monomers used for dacron is ethylene glycol (ethane-1,2-diol) and terephthalic acid (1,4-benzene dicarboxylic acid).

Natural Rubber is a Polymer derived from Isoprene.

Bakelite is a polymer.

When solid Potassium Permanganate (KMnO₄) is mixed with pure glycerol or other simple alcohols, it will result in a violent combustion reaction. Potassium Permanganate is an extremely powerful oxidizer which spontaneously ignites after coming in contact with glycerol. The glycerol is oxidized so quickly that heat is generated faster than it can be dissipated.

Silver nitrate decomposes in presence of sunlight. To prevent this decomposition, silver nitrate is placed in brown colour bottles as sunlight cannot pass through brown colour bottles.

Blue colour is produce by Arsenic during flame test.