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What is a photochemical reaction? Give o...

What is a photochemical reaction? Give one example.

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  • ATOMS AND MOLECULES

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VGS PUBLICATION-BRILLIANT-ATOMS ,MOLECULES AND CHEMICAL REACTIONS-EXERCISE
  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 oxidation and reduction. ? Give one example to each.

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

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

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

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  8. What is Galvanizing?

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

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  10. What type of reaction is rancidity?

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

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

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

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

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  15. What are antioxidants?

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

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  17. NH(4)Cl rarr NH(3)+HCl . Which type of reaction is the ?

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  18. Which chemical reaction is involved in the corrosion of iron?

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  19. 0.24 g sample of compound of oxygen and boron was found by analysis to...

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  20. Why does respiration considered as an exothermic reaction ? Explain.

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