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प्रश्न
Name the following:
The gas required for both combustion and rusting.
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उत्तर
Oxygen
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संबंधित प्रश्न
State at least two ways of prevent rusting.
Fill in the blank by choosing the correct word from the given list.
List: oxygen, carbonic, suIphur dioxide gas, precipitation, helium
____________ gas can cause acid rain.
What happens when Sodium burns in oxygen ? Also give the balanced chemical equation for the reaction.
Tick (√ ) the most appropriate answer.
Galvanising is the process of coating iron with a layer of molten :
How will you prove that oxide formed by burning sodium is basic in nature?
Describe simple experiments to show the presence of -
oxygen and nitrogen component in air using a bell jar
Identify the acidic oxides responsible for acid rain. State how their presence results in formation of acid rain. Give a reason why acid rain damages heritage buildings.
Give the main experimental points only to demonstrate that candle-gains weight on burning.
Give reason for the following:
Acid rain has caused damage to heritage structures such as the Taj Mahal.
Match the following
| 1. | Burning of meteors | a. | Exosphere |
| 2. | Weather change | b. | Stratosphere |
| 3. | Lowest temperature | c. | Mesosphere |
| 4. | Ozone layer | d. | Troposphere |
