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What are the major causes of water pollu...

What are the major causes of water polluction ? Write any two causes only.

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OSWAAL PUBLICATION-Sample Paper 5-Exercise
  1. What is Wurtz reaction? Give example.

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  2. Write the reaction for combustion of methane.

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  3. What are the major causes of water polluction ? Write any two causes o...

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  4. On the basis of their electronic configurations, explain why alkali m...

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  5. What is valence electrons.

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  6. What angles are associated with the following orbitals? sp,sp^(2)andsp...

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  7. Give any two factors which favours ionic bond.

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  8. Between AlCl(3)andAlF(3) which is covalent?

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  9. Draw the energy level diagramn of carbon molecule.Calculate its bond o...

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  10. Balance the following redox reaction by ion-electron method.:MnO4^-(aq...

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  11. Distinguish between temporary hardness permanent hardness.

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  12. What happens when lead sulphide is reacted with hydrogen peroxide solu...

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  13. Beryllium and magnesium do not impart colour to bunsen flame. Why?

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  14. How could be baking soda prepared commercially ? Write its one use.

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  15. Write the balanced quations.:BF(3)+LiHrarr

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  16. Write the balanced quations.:AL+NaOHrarr

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  17. Write the balanced quations.:BB(2)H(6)+NH(3)rarr

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  18. What is the number of molecules of CO2 contains 8 g of O2?

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  19. Write any two points of importance of chemistry.

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  20. Give the experimental conclusions arrived by Rutherford in the alpha ...

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