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What is a photochemical reaction? Give o...

What is a photochemical reaction? Give one example.

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The decomposition reaction occuring in presence of sunlight is called photochemical reaction . Ex : `2AgBr overset("Sunlight")rarr 2Ag+Br_(2)`
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VGS PUBLICATION-BRILLIANT-CHEMICAL REACTIONS AND EQUATIONS-ESSENTIAL MATERIAL FOR EXAMINATION PURPOSE
  1. Give an example for decomposition reaction.

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  2. What is a thermal decomposition reaction ? Give an example.

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  3. What is a photochemical reaction? Give one example.

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  4. Define displacement reaction and given an example.

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  5. Define double displacement reaction and give an example.

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  6. What is oxidation - reduction reaction or redox reaction ? Give one ex...

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  7. Why the apples, pears, bananas, etc. change their colour when they cut...

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  8. What do you mean by corrosion? How can you prevent it ?

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  9. Write the chemical equation for tranishing of silver wear (black coati...

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  10. What is Galvanizing?

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  11. What is an alloy ? Give two examples for alloys.

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  12. What type of reaction is rancidity?

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  13. Write the chemical reaction for bleaching of coloured objects using mo...

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  14. Why the white washig gives shiny finish to the walls?

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  15. Why the smell and taste of food items change?

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  16. ''Freshly cut apple turning brown, the iron articles shiny when new, b...

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  17. What are new substances formed due to decomposition of lead nitrate?

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  18. Balance the following chemical equation. C(2)H(6)+O(2)rarr CO(2)+H(2)O

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  19. What are antioxidants?

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  20. Which type of reaction involved when silver bromide is exposed to sunl...

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