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Worksheetspollution of air and water 10-08-20
Total questions: 10
Worksheet time: 5mins
When air is contaminated by unwanted substances which have a harmful effect on both the living and the non-living, it is referred to as ___________pollution.
water
air
sound
soil
The substances which contaminate the _________ are called air pollutants.
sound
air
water
soil
Many ___________ problems are caused by air pollution
digestive
respiratory
nervous
bone
________________ is produced from incomplete burning of fuels such as petrol and diesel.
carbon dioxide
carbon monoxide
carbon trioxide
carbon tetraoxide
Increasing levels of greenhouse gases like __________________ are leading to global warming.
carbon dioxide
carbon monoxide
carbon trioxide
carbon tetraoxide
Water which is purified and fit for drinking is known as____________ water.
potable water
pot water
mud water
dirty water
_________ is a precious natural resource.
water
gold
soil
air
If the vehicles registered in Delhi are lined up one after the other, the total length would be nearly equal to the combined lengths of the two longest rivers in the world,_____________ and________
nile
amazon
both a and b
brahmaputra
Boojhoo remembers seeing a thick fog-like layer in the atmosphere, especially during winters. This is smog which is made up of ________ and__________
smoke
fog
both a and b
only smog
Other kinds of pollutants are chlorofluorocarbons (CFCs) which are used in refrigerators, air conditioners and aerosol sprays
refrigerators
air conditioner
aerosol sprays
all the above
