Acid rain is caused due to increase in concentration of ................ and .................. in atmosphere.
The information in which row completes the given statement?
Sulphur dioxide, Nitrogen dioxide
Carbon monoxide, Carbon dioxide
Carbon monoxide, Sulphur dioxide
Ozone, Dust
Glass panel usually appear hazy because
Water vapour settles on the tiny dust particles.
It is the property of transparent substance
The glass is old
Of chemical reactions
In an area 'X', there is a factory that burn fuels for energy and causes air pollution. The smoke that it produces contain dust, soot and other harmful gases.
Which of the following is the best solution?
Factories should be built in areas where few people live.
People who live near factories must be prepared to breathe in polluted air.
Lot of trees should be planted near factories to absorb hamrful gases.
Factories should have large chimneys and special device to remove pollutants from smoke.
Many cars today are designed to get better gas mileage than those made in the past. This change resulted from a need to
Recycle materials
Improve safety
Produce chemicals
Conserve resources
The table below groups some sources of pollution.
Which group causes air pollution?
I
II
III
IV
The table shows the number of vehicles passing by on an 'X' road at different times of the day.It is most likely that the air was most polluted during the time