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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
Respiration
विकल्प
is a slow process
is a natural and continuous process
takes place at body temperature
all of the above
MCQ
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उत्तर
all of the above
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संबंधित प्रश्न
What is air pollution?
Name three greenhouse gases.
Tick (√) the correct alternative from the choice given for the following statement.
Photosynthesis is a process in which plants
Fill in the blank:
The gas evolved as a product of combustion as well as respiration is ______.
Fill in the blank:
A candle burns in a jar of oxygen, but gets extinguished in ______
Mention two advantages of wind energy.
Mention two uses of air.
Match the following:
| 1. | Layer of air | a. | Hand fan |
| 2. | Electrical energy | b. | 21% |
| 3. | Nitrogen | c. | Windmill |
| 4. | Oxygen | d. | Atmosphere |
| 5. | Palm Trees | e. | 78% |
Which of the following statements is incorrect?
Match the items of Column I with the items of Column II
| Column I | Column II | ||
| (a) | Weather cock | (i) | Gases and fine dust particles |
| (b) | Mountaineers | (ii) | Sailing yacht |
| (c) | Fine hair inside the nose | (iii) | Oxygen cylinders |
| (d) | Smoke | (iv) | Direction of air flow |
| (e) | Wind | (v) | Prevent dust particles |
