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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
Photosynthesis is a process in which plants
पर्याय
take in oxygen and give out carbon dioxide
take in carbon dioxide and give out oxygen
take in nitrogen and give out oxygen
none of the above
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उत्तर
take in carbon dioxide and give out oxygen
APPEARS IN
संबंधित प्रश्न
Discuss harmful effects of greenhouse effect.
Why can’t we see air?
Give two uses of the following component present in air:
nitrogen
How is air useful to water boats?
Tick (√) the correct alternative from the choice given for the following statement.
The substance which accelerates the speed of a reaction without itself undergoing any change is called
Water does not have a ______ but has definite ______ and ______.
With whom should I pair up?
| Group A | Group B | ||
| (1) | Air | (a) | Excretion |
| (2) | Water | (b) | Scattering of light |
| (3) | Soil | (c) | Plasticity |
______ is important for all living creatures.
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% |
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
The ______ makes the windmill rotate.
