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What happens when Boron and Concentrated` H_2SO_4` is heated.

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UNITED BOOK HOUSE-MODEL QUESTION PAPER 4-EXERCISE
  1. State the Hund’s rule of maximum multiplicity. Wh Fe^(3+) ion is more ...

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  2. Write with balanced equation what happens when CO2 is pasped through s...

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  3. What happens when Boron and Concentrated H2SO4 is heated.

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  4. Why -NO2 group is meta Orienting.

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  5. What is Chloriosis? What is responsible for it?

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  6. Calculate the de Broglie wavelength of a stone piece of mass 25 gm mov...

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  7. Calculate the frequency and kinetic energy of a photon having waveleng...

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  8. What is screening effect? Arrange the orbital as per their increasing ...

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  9. Why CaF2 is insoluble in water? What type of bonding is observed in Li...

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  10. Which one has higher electrovalent nature among NaCl & AlCl3? Indicate...

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  11. What is partial pressure? If the total pressure of a mixture of 4 gm H...

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  12. What do you understand by laminar flow? Define surface tension.

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  13. A gas is compared by 10 lit in an external pressure 10 atm irrivesibll...

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  14. Show that Wcrversibly > Wirreversible.

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  15. Balance the following chemical equation by ion electron method.IO3^(-)...

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  16. Balance the following- reaction by ordination number method:-CuSO4 + P...

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  17. Establish the fealtionship between Volume strength and perccntage stre...

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  18. What happens when Cl2 gas is passed through cold lime solution. What i...

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  19. Write the IUPAC name

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  20. Write the IUPAC name

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