Ch-18, POLLUTION OF AIR AND WATER

Boojho wishes to contribute in reducing air pollution. Which vehicle should he use for going to school?

• Car

• School Bus

• Autorickshaw

• Scooter

Name the chemicals which are used in refrigerators, air conditioners, and damage the ozone layer when released into the air.

• CNG

• Silicone dioxide

• CFCs

• LPG

Name two gases that are mainly responsible for acid rain

• Sulphur dioxide

• Carbon dioxide

• Calcium dioxide

• Nitrogen dioxide

What is the full form of CFCs?

write everything in small letters

The phenomenon in which acid rain corrodes the marble of the monument is called _________________.

• Monument Cancer

• Heart Attack

• Marble Cancer

• Acid Cancer

What is the formula of ozone?

• O5

• O3

• O10

• O2

a thick fog-like layer in the atmosphere, especially during winters is called ________________.

• snow

• smog

• asthma

• smoke

Name three alternative sources of energy that do not cause any pollution.

• Wind energy

• hybrid energy

• solar energy

• hydropower

• geothermal energy

What are the harmful effects of smog? (Any 3)

• asthma

• fix

• Malaria

• cough

• wheezing in children