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प्रश्न
Complete the statement given below by filling in the blank with the correct word from the words given
___________is an example of a pollutant present in the air.
विकल्प
carbon dioxide
stratosphere
nitrogen dioxide
water vapour
hydrogen sulphide
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उत्तर
Hydrogen sulphide is an example of a pollutant present in air.
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संबंधित प्रश्न
Tick (√) the most appropriate answer.
Symbiotic bacteria is not present in the nodules of :
Write ‘true’ or ‘false for the following;
Carbon dioxide is given out during photosynthesis
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Name the following:
The component of air which is present more in industrial areas.
Why do we see the sky and air clear and clean after rainfall?
Inhaled air contains a large amount of carbon-di-oxide.
The balance of oxygen in atmosphere is maintained through photosynthesis in animals and respiration in plants.
Nitrogen gas is so cold that moisture in the air condenses on it, creating a dense fog.
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?
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?
