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प्रश्न
Fill in the blank
The supporter of combustion in air is _____.
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उत्तर
The supporter of combustion in air is oxygen.
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संबंधित प्रश्न
Give reason:
A burning candle stops burning if covered with a glass tumbler
Nitrogen is used in the food packaging industry because it _____.
Can you guess why fire extinguishers throw a stream of carbon-di-oxide while putting - off the fire?
The component of air used by green plants to make their food, is ______.
The main component of air is oxygen.
______ gas cylinders are used for breathing purpose for a diver going deep into the sea.
Mountaineers carry oxygen cylinders with them because ______.
Boojho took an empty plastic bottle, turned it upside down and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations.
- Bubbles of air came out from the bottle.
- Some water entered the bottle.
- Nitrogen gas came out in the form of bubbles and oxygen got dissolved in water.
- No bubbles formed, only water entered the bottle.
Which observations is/are correct?
Write just a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere.
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?
