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प्रश्न
Give a chemical test to distinguish between the following gases:
Sulphur dioxide and chlorine.
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उत्तर
Sulphur dioxide [SO2]:
- Moist blue litmus paper turns red.
- turns acidified potassium permanganate from pink to colourless.
Chlorine [Cl2]:
- Moist blue paper turns red and gets bleached
- Turns moist starch iodide paper blue-black
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संबंधित प्रश्न
Give biological reasons for the following statements:
Cutting of trees should be discouraged.
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The global warming has resulted in :
How can we reduce global warming?
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What do you understand by the term ‘global warming’?
Global warming does not augur well for our planet earth. State at least three reasons to support this statement.
Give a description of the recent studies about Global Warming.
Match the items of Column A with those of Column B.
| Column A | Column B |
| (a) sulphur dioxide | (i) damage ozone layer |
| (b) carbon dioxide | (ii) reduces oxygen-carrying capacity of blood |
| (c) carbon monoxide | (iii) acid rain |
| (d) chlorofluorocarbons | (iv) green house gas |
An average increase in the temperature of the atmosphere is called acid rain.
