Q20 of 22 Page 99

Why should we not burn plastic items?

Burning of plastic items produce dangerous toxic gases which cause health hazards as well as environmental pollution. The gases released cause respiratory problems, it also pollute air. Left over ashes are toxic which cause soil pollution and if consumed by animals may cause death.


More from this chapter

All 22 →
18

Beautiful hand crafted articles like boxes and toys are made of paper pulp in our country. Can you explain how paper pulp which is made from paper can be used to make hard boxes and other articles?

 19

Recently, a ban on plastic bags has been imposed in many places? Is the ban justified? Give reasons in three sentences.

 21

What happens when

(a) Cooking medium is made to flow down a drain.


(b) Insecticides, motor oil, paints are poured down the drain.


(c) Tea leaves, cotton swabs and old soft toys are thrown into the drain.

 22

Answer the following questions in one or two words or sentences:

(a) Why should we prefer to use paper bags rather than polythene bags?


(b) Who, out of the following should properly dispose of the garbage – father, mother, elder brother, younger sister?


(c) Which one out of beetles, roundworm and earthworm are used for vermicomposting and why?