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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
Which of the following is not a greenhouse gas?
पर्याय
carbon dioxide
sulphur dioxide
methane
nitrogen
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उत्तर
nitrogen
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संबंधित प्रश्न
Mention the contribution of the following scientists :
- Antoine Lavoisier
- Robert Boyle
- Joseph Priestley
- Sir W. Ramsay
Match the statements in Column A, with those in Column B.
| Column A | Column B |
| 1. Largest Constituent of air, which dilutes the activity of oxygen. | (a) Oxygen |
| 2. A gas used for filling weather observeation balloons. | (b) Carbonic acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphuric acid |
| 4. An acid formed by the dissolution of carbon dioxide in water. | (d) Helium |
| 5. A gas vital for respiration. | (e) Nitrogen |
Fill in the blank:
_____________ discovered the oxygen gas.
How is air useful to water boats?
Describe a simple experiment with the help of a diagram to show that Air has mass
Describe a simple experiment with the help of a diagram to show that Air is highly compressible
Draw a neat labelled diagram for the following experiment.
To prove that oxygen is non-combustible, but supports combustion.
What is wind energy?
Take a squeezable bottle. Make a hole on the lid and close the bottle tightly. Bring the bottle near your face and press the bottle. What do you feel?
Explain the following observations very briefly
A firki does not rotate in a closed area.
