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प्रश्न
Define:
Photochemical reaction
Give one example
उत्तर
It is a reaction which occurs with absorption of light energy.
Example: Photosynthesis
\[\ce{6CO2 + 6H2O -> C6H12O6 + 6O2}\]
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संबंधित प्रश्न
Give one example that illustrates the following characteristics of a chemical reaction:
Change in state
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TRUE \ FALSE
Evaporation of water is a physical change. True or false ?
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Write true or false :
No new substance is formed during a chemical reaction.
Give an example of a reaction where the following are involved
Light
Define Electrochemical reaction
Give an example
Write the chemical reaction where the following changes are observed.
Gas is evolved
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What is observed in performing the following :
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| Litmus test | ||||
| Apply a burning splint to the gas | ||||
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| Odour of gas |
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Zinc nitrate to nitrogen dioxide
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| 2. | Calcium sulphate dihydrate | b. | C2H5Oh |
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Are these changes chemical in nature?
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