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प्रश्न
Give reason:
A burning candle stops burning if covered with a glass tumbler
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उत्तर
Oxygen is necessary for combustion when covered with a glass tumbler supply of oxygen stops.
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संबंधित प्रश्न
What are the two ways in which nitrogen fixation occurs?
Explain the conversion of nitrogen into nitrates during lightning.
Give reason:
Aquatic animals and plants are able to survive in the matter.
Give a reason why water droplets appear on the outer surface of a tumbler containing ice.
______ is the percentage of nitrogen in air.
The component of air used by green plants to make their food, is ______.
The main component of air is oxygen.
How to show the presence of carbon-di-oxide in the air?
Nitrogen is about two times more soluble in water than oxygen.
On a Sunday morning Paheli’s friend visited her home. She wanted to see some flowering plants in the nearby garden. Both of them went to the garden. While returning from the garden they also observed some flowering plants on the road side. But to their surprise they found that the leaves and flowers of these roadside plants were comparatively very dull. Can you help them to know why?
