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State reason :Why born nitrides is calle...

State reason :Why born nitrides is called inorganic graphite..

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UNITED BOOK HOUSE-MODEL QUESTION PAPER 5-EXERCISE
  1. Compare the bond angle of the molecules NH3 H2O and CH4. Which theory ...

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  2. State the hybridisation and structure of the molecule SF6, PCI5 & SiCl...

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  3. Write two differences between Real & Ideal gas. What is partial pressu...

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  4. Define surface tension of a liquid. What do you mean by viscosity of a...

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  5. The standard heat of formation of C6 H5 COOH (s) CO2 (g) & H2 O (1) at...

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  6. Establish DeltaG = DeltaH- TDeltaS.

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  7. What do you mean by oxidation number determine the oxidation no of * m...

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  8. What is heavy water? Why is it so called?

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  9. Calculate the hardness of water in ppm. when 10 gm MgCl2 and 15 gm Cal...

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  10. Why are alkali metals not found in nature?

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  11. Give example of elemination and addition reaction in organic Chemistry...

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  12. State La-Chatteler principle. What is active mass? How it is measure? ...

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  13. Explain what will happen if the reaction below is treated in open & cl...

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  14. What is pH of a solution? Is the neutral pH at higher temperature be l...

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  15. State reason :Why born nitrides is called inorganic graphite..

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  16. What will happen if boron is heated with KOH solution.

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  17. What happens when boron is strongly heated with concentrated HNO3? Wh...

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  18. State the reagent used for the following. Conversion:-

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  19. State the reagent used for the following. Conversion:-

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  20. State the reagent used for the following. Conversion:-

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