 |  Air 20 Flashcards |  Start |
 | What is the most abundant gas in the Earth's atmosphere? |  Card: 1 / 20 |
| Nitrogen | Card: 2 / 20 |
| Fill in the blank: Air is a mixture of gases, primarily composed of nitrogen and ______. | Card: 3 / 20 |
| Oxygen | Card: 4 / 20 |
| True or False: Air is visible and has a strong odor. | Card: 5 / 20 |
| False. Air is colourless and odourless. | Card: 6 / 20 |
| Riddle: I am essential for life, invisible and all around. Without me, plants cannot grow. What am I? | Card: 7 / 20 |
| Air | Card: 8 / 20 |
| Which of the following is NOT a cause of air pollution? A) Volcanic eruptions B) Planting trees C) Burning fuels D) Vehicle emissions | Card: 9 / 20 |
| B) Planting trees | Card: 10 / 20 |
|  Unlock all Flashcards with EduRev Infinity Plan Starting from @ ₹99 only | |
| Fill in the blank: The process of taking in and releasing air is called ______. | Card: 11 / 20 |
| Breathing | Card: 12 / 20 |
| True or False: Germs like bacteria and viruses improve air quality. | Card: 13 / 20 |
| False. Germs reduce air quality. | Card: 14 / 20 |
| What is one of the effects of air pollution on human health? | Card: 15 / 20 |
| It can cause health issues like flu, asthma, and headaches. | Card: 16 / 20 |
| Riddle: I expand when heated, can fill a balloon, yet you cannot see me. What am I? | Card: 17 / 20 |
| Air | Card: 18 / 20 |
| Fill in the blank: Air contains small amounts of ______, which plants use for photosynthesis. | Card: 19 / 20 |
| Carbon dioxide | Card: 20 / 20 |
| Completed! Keep practicing to master all of them. |  Restart |
