Advertisements
Advertisements
Question
Air is made up of oxygen only.
Options
True
False
MCQ
True or False
Advertisements
Solution
Air is made up of oxygen only- False.
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
What is the significance of water vapour in air?
Write ‘true’ or ‘false for the following;
Carbon dioxide is given out during photosynthesis
Explain the importance of nitrogen of the air for plant growth.
The diagrams below represents an experiment to show the presence of a component of air.
- State why air is sucked from – outlet ‘B’ and not from outlet “A”
- State why the air is sucked ‘slowly’ from the outlet “B”
- State the observation seen after completion of the experiment.
- State the reason for the above observation seen.
- Name another component which if present in air as a pollutant would have given a similar observation
Of the total volume of air – 4/5th is nitrogen. State the utility or consequence of this ratio.
Compare respiration and combustion-both involving oxygen of the air.
Arrange the following statements in correct sequence
- Plants manufacture food by a process called photosynthesis.
- Plants require energy for their growth.
- Plants take in oxygen and release carbon dioxide just as animals.
- Plants take carbon dioxide from the atmosphere, use chlorophyll in the presence of sunlight and prepare food.
- Such oxygen is available to animals and human beings for breathing.
- During this process, oxygen is released by plants.
Match the following:
| 1. | More industrial cities | a. | dust particles |
| 2. | Coastal areas | b. | Humidity |
| 3. | Rainy season | c. | Carbon dioxide |
| 4. | Windy places | d. | water vapour |
Give the components present in the air with a percentage?
When cooled to -57°C, gaseous carbon-di-oxide becomes a liquid.
