Advertisements
Advertisements
प्रश्न
Air is made up of oxygen only.
पर्याय
True
False
Advertisements
उत्तर
Air is made up of oxygen only- False.
APPEARS IN
संबंधित प्रश्न
Fill in the blanks :
_______ and ______ are the most common air pollutants.
State the full form of LPG and CNG? How are the two different in their composition?
Give a reason why two different rare (inert) gases find application in advertisement signs and fluorescent bulbs.
Name three different appliances where air is utilized.
What happens if the percentage of carbon-dioxide increases in 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.
List out the uses of nitrogen.
When air is moving with cool and soothing, it is called a cyclone.
Match the following
| 1. | Oxygen | a. | Carbon dioxide |
| 2. | Azote | b. | Nitrogen |
| 3. | Solvay process | c. | Vital life |
| 4. | Gun powder | d. | No life |
Assertion: Carbon dioxide occurs as carbonates in nature.
Reason: Carbon dioxide can exist as a liquid at atmospheric pressure.
