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प्रश्न
Name three greenhouse gases.
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उत्तर
Carbon dioxide, methane, nitrous oxide, etc.
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संबंधित प्रश्न
How is greenhouse effect produced?
Tick (√) the correct alternative from the choice given for the following statement.
Which of the following is not a greenhouse gas?
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
The capacity of air to hold moisture depends upon the ______ of the air.
Match the statements in List I with the correct answer from List II.
| List I | List II |
| 1. The constituent of air which is around 0.02% | A: Nitrogen |
| 2. The constituent of air which is inert or unreactive | B: Oxygen |
| 3. The constituent of air which is non-combustible, but supports combustion. |
C: Sulphur dioxide |
| 4. A pollutant in air responsible for acid rain | D: Carbon dioxide |
| 5. The main rare gas present in air. | E: Argon |
Fill in the blank:
A candle burns in a jar of oxygen, but gets extinguished in ______
Draw a neat labelled diagram for the following experiment.
To study the presence of carbon dioxide in air.
Draw a neat labelled diagram for the following experiment.
To prepare oxygen in the laboratory from hydrogen peroxide and a catalyst.
Match the following:
| 1. | Layer of air | a. | Hand fan |
| 2. | Electrical energy | b. | 21% |
| 3. | Nitrogen | c. | Windmill |
| 4. | Oxygen | d. | Atmosphere |
| 5. | Palm Trees | e. | 78% |
Paheli kept some water in a beaker for heating. She observed that tiny bubbles appeared before the water started to boil. She boiled the water for about 5 minutes and filled it in a bottle up to the brim and kept the bottle air tight till it cooled down to room temperature.
Do you think tiny bubbles will appear on heating the water taken out from the bottle? Justify your answer.
