Which of them is a polymer?
A substance becomes soft on heating and can be mould into different shapes. It is called
Monomers are the basic unit of
Which one of the following is a fireproof plastic?
Which one of the following can’t catch fire?
Correct Answer :- b
Explanation : Melamine is a versatile material. It resist fire and can tolerate heat better than other plastics. It is used for making floor tiles, kitchenware and fabrics which resist fire.
Which of these can be used as a substitute for glass of windows in cars?
On the basis of activity, the strongest fibre is
Which of the following is a monomer of polythene?
Which fibre is called as artificial silk?
PVC stands for
A paper strip is immersed in NaOH and then in carbon disulphide (Cs2). The liquid obtained is
NaOH and —— are solutions used in the preparation of rayon.
Which fibre is used in making of conveyor belts?
Which type of plastic cannot be reheated again to form new shapes?
Which substance is used in coating for making non-sticky utensils?