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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.
List two major harmful effects of the following:
Too much gaseous exhausts containing CO2 and SO2.
Fill in the Blanks:
Global warming is caused due to ______ concentration of CO2 in air.
Choose the correct option.
Use of fossil _____ causes global warming.
Match the Columns:
| Column A | Column B |
| 1. Ozone depletion | a. GHG |
| 2. Methane | b. Disappearance of habitat |
| 3. Deforestation | c. UV rays from the sun |
| 4. Fossil fuel | d. CFCs |
| 5. Global warming | e. comes from cattle |
How will countries like Bangladesh and Thailand be affected by global warming?
Name some diseases that are caused due to exposure to ultraviolet rays of the sun.
State some anthropogenic (man-made) causes of global warming.
Global warming does not augur well for our planet earth. State at least three reasons to support this statement.
How can global warming can be reduced?
