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प्रश्न
Give a chemical test to distinguish between the following gases.
CO2 and SO2
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उत्तर
|
Carbon dioxide |
sulphur dioxide |
| Litmus test: It turns moist blue litmus faint red. | Litmus test: It turns moist blue litmus red and finally bleaches it. This bleaching is temporary. |
| The gas has no effect on filter paper dipped in acidified K2Cr2O7 or KMnO4. | It has no effect on lead acetate paper (Distinct from H2S). This test distinguishes it from H2S. |
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संबंधित प्रश्न
Give one example that illustrates the following characteristics of a chemical reaction:
Change in state
Give an example of a reaction where the following are involved:
Close contact
Define a photochemical reaction.
When hydrogen burns in oxygen, water is formed; when electricity is passed through water, hydrogen and oxygen are given out. Name the type of chemical change involved in the two cases.
Give a chemical test to distinguish between the following gases.
H2 and O2
Differentiate between the following:
Neutralization reaction and a precipitation reaction.
Higher order Thinking question
Peeled and unpeeled banana does not look the same. Does that mean peeling banana is a chemical change?
Classify the following as physical or chemical properties
Most metal oxides form alkalis on interacting with water.
Melting of wax is a change where a solid changes to liquid state. Give one more such change which you observe in your surroundings
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
Are these changes chemical in nature?
