
What are the various kinds of solvents?
Important Questions on Role of Substances in Environment

Turpentine oil in paints is used as a-

Polythene bags are non-biodegradable. They collect in our surroundings and pollute the soil and water. Old cotton fabric and even old denim cloth can be used to make bags to carry vegetables, fruits, milk sachets and other household items. This would reduce the use of polythene bags.
Do you think polythene bags make your surroundings unclean?



In paint, lead is used as a:

Polythene bags are non-biodegradable. They collect in our surroundings and pollute the soil and water. Old cotton fabric and even old denim cloth can be used to make bags to carry vegetables, fruits, milk sachets and other household items. This would reduce the use of polythene bags.
Should vegetable vendors and shopkeepers sell goods in polythene bags?

Explain what you see in the following picture



The fibres that are waterproof, wrinkle-proof and long-lasting are called:




Give scientific explanation:
The particles of powder are given an electric charge while spraying them to form the powder coating.




Write the uses of powder coating.

Consider the following statements regarding aluminium paint.
I. It is a fairly good heat-resistant.
II. It possesses good electrical resistance.
III. It can be used for hot water pipes.
Which of the statements given above is/are correct?

