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प्रश्न
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Photosynthesis is a process by which green plants prepare their own food in the presence of sunlight and chlorophyll.
विकल्प
True
False
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उत्तर
True.
संबंधित प्रश्न
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
_______ gas is used for filling weather observation balloons.
Tick (√) the most appropriate answer.
A gas which dilutes the activity of oxygen in air is:
Give reason:
Mountaineers and divers carry oxygen cylinders with them.
Name the following:
The component of air which is present more in industrial areas.
Mention one necessary condition for the combustion to take place.
Explain why during an incident of fire, one is advised to wrap a woollen blanket over a burning object.
Match the following.
| Nitrogen | Respiration in living animals |
| Oxygen | Fertilizer |
| Carbon dioxide | Refrigerator |
| Dry ice | Fire extinguisher |
Write about the reaction of nitrogen with non metals.
Nitrogen is about two times more soluble in water than oxygen.
The solid form of CO2 is called dry ice which undergoes condensation.
