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प्रश्न
Give reason:
Aquatic animals and plants are able to survive in the matter.
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उत्तर
Aquatic animals and plants use oxygen dissolved in water and survive.
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संबंधित प्रश्न
State three uses of water vapour in the air.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
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Write fully balanced equation for the following :
Ca(OH)2 + CO2 →
Give reason:
Mountaineers and divers carry oxygen cylinders with them.
Fill in the blank
Aquatic plants and animals use _________ in water.
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Explain why mountaineers carry oxygen cylinders with them?
Explain why during an incident of fire, one is advised to wrap a woollen blanket over a burning object.
Classify the following.
( Dog, Cat, coconut tree, monkey, brinjal plant, papaya plant)
| Things which give out oxygen | Things which give out carbon dioxide |
“Air is not an elementary substance, but a composition”. Why?
