English Special Question Bank Worksheet - Class Ix Page 11

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3)
What is the surest indication of a child’s good health?
4)
Find out from the passage:
(i)
a word which means ‘talk in a way that is difficult or
impossible to understand?
(ii)
A ward which means ‘almost certainly’
Passage – 2
Pollution is the fouling of the environment – land, water, and air – by
waste, smoke, chemicals and other harmful substances. The most serious
pollution occurs where there are large cities and many factories. Every
industrial country faces the problem of waste. As factories produce new
goods for people to buy, old ones are thrown out with the household rubbish.
Burning this refuse pollutes the air, dumping it in rivers and seas pollutes the
water, and rubbish tips are unpleasant sights and take up much needed space.
Getting rid of plastics is particularly difficult. Wood and paper decay after
some time through the action of bacteria. But plastics never decay. The more
we throw away, the more litter is produced.
The world’s oceans have been used as ‘dustbins’, with millions of
tonnes of rubbish being dumped into the sea every year, harming marine life.
If too much untreated sewage is poured into seas, lakes, and rivers from
sewers, the water can no longer dilute it. All the oxygen in the water is used
up, and the fish die. The bacteria which normally break down the sewage
into harmless substances also die, only harmful bacteria which do not need
air remain, and these cause disease.
Smoke from factory chimneys and exhaust gases from motor vehicles
pollute the air. Chemicals in the air combine with moisture to make acids
which eat away stone and brick, and so damage buildings. Carbon monoxide
gas and substances called hydrocarbons given out by the engines of cars,
lorries, and buses can damage people’s health. Ridding our world of
pollution is an unimaginably big task.
Questions :
1)
Name three factors leading to pollution?
2)
The world’s oceans have been used as ‘dustbins’ Elaborate.
3)
How is air polluted? What are its ill effects?
4)
Find out words from the passage:
11

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