Advertisements
Advertisements
Question
The components of air which are harmful to living beings are
Options
nitrogen and carbon dioxide.
dust and water vapour.
dust and smoke.
smoke and water vapour.
Solution
dust and smoke.
Explanation:
Dust and smoke are harmful to living beings because if they enter our body, they can cause respiratory problems.
APPEARS IN
RELATED QUESTIONS
Define the term Global warming.
Classify Carbon monoxide. Also give a balanced equation to prepare it.
Give a reason why two different rare (inert) gases find application in advertisement signs and fluorescent bulbs.
Match the statements in List 1 with the correct answers in List 2
| List 1 | List 2 | ||
| 1 | An impurity in air | A | Water vapour |
| 2 | The component of air which supports combustion | B | Respiration |
| 3 | The inert component in the air slightly soluble in water | C | Rare gases |
| 4 | The component of air which minimizes the rate of evaporation | D | Sulphur dioxide |
| 5 | The process which involves oxidation of food substance in living organisms | E | Helium |
| 6 | The component of air which finds application in observation balloons | F | Carbon dioxide |
| 7 | The process which involves oxidation of substances, liberating heat and light energy | G | Combustion |
| 8 | The component of air which is heavier than air and fairly soluble in water | H | Nitrogen |
| 9 | The process by which atmospheric carbon dioxide is absorbed by plants resulting in the formation of carbohydrates | I | Photosynthesis |
| 10 | The component of air which is lighter than air and less than 1% in air | J | Oxygen |
Tabulate the various components of air, including the components with variable composition.
Air is made up of oxygen only.
Inhaled air contains a large amount of carbon-di-oxide.
Write about the reaction of nitrogen with non metals.
Soda bottle bursts sometimes when it is opened during summer. Why?
Nitrogen gas is so cold that moisture in the air condenses on it, creating a dense fog.
