Advertisements
Advertisements
Question
Suggest five measures to prevent air pollution.
Solution
Five measures for the prevention of air pollution are:
- By using smokeless sources of energy, like solar energy and electrical energy, in place of conventional fossil fuels.
- By using filters for the. smoke coming out of the chimneys of factories and power plants.
- By using internal combustion engines in vehicles for complete and efficient burning of fuel.
- By locating industries away from residential areas.
- By growing more trees.
APPEARS IN
RELATED QUESTIONS
Briefly state the importance of Water vapour.
Give reason:
Aquatic animals and plants are able to survive in the matter.
Give the chemical name of rust.
Name the following:
The main, rare (inert) gas present in air.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
The percentage of carbon dioxide in the air is between 0.2 to 0.4%.
Give word equation for the following conversion:
Nitrogen of the air to nitric oxide
Analogy
Photosynthesis : _____ :: Respiration : Oxygen
How to show the presence of carbon-di-oxide in the air?
______ exists in nature as silicates, carbonates, oxides, and water. It also exists in a free state as part of the air in the atmosphere.
Boojho took an empty plastic bottle, turned it upside down, and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations.
(i) Bubbles of air came out from the bottle.
(ii) Some water entered the bottle.
(iii) Nitrogen gas came out in the form of bubbles and oxygen got dissolved in water.
(iv) No bubbles formed, only water entered the bottle.
Which observations is/are correct?
