Answer:
(i)
With the development of science and technology, the usage of chemicals has increased
our crop production, they purify our drinking water, and help in painting our
beautiful homes, etc.
(ii) Nearly every household uses products containing hazardous materials or
chemicals.
(iii) Some hazardous chemicals used in every household are
hair sprays and deodorants, nail polish removers, toilet cleaners, wall paint
and furniture polish.
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