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Which of the halogen hydracids forms bi-...

Which of the halogen hydracids forms bi-salts ? Write reasons.

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UNITED BOOK HOUSE-HIGHER SECONDARY EXAMINATION 2019-EXERCISE
  1. What is peptisation? Give one example.

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  2. Mention two differences between bleaching action of SO2 and Cl2.

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  3. Which of the halogen hydracids forms bi-salts ? Write reasons.

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  4. Which type of isomerism is shown by the two complexes: [Co(NH3)5SO4] B...

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  5. Write the name of monomer units of Dacron and mention one use of it.

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  6. Which type of stoichimetric defects is shown by Ag Br crystal?

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  7. Chromium (atomic-mass=52) metal has body-entred cubic structure. The r...

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  8. What do you mean by packing fraction of cubic unit cell?

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  9. Calculate packing fraction of face-centred cubic unit cell.

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  10. What is the vapour pressure of purewater at 100^@C temperature?

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  11. 12 g of a solid solute is dissolved in 90 gm pure water. Vapour pressu...

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  12. Write cell reaction and calculate electrical work obtained from the fo...

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  13. Write composition of copper matte.

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  14. Write balanced equations for the reactions involved in the extraction ...

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  15. Which type of ores is concentrated by froth floatation process?

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  16. What is thermit mixture? Mentain one use of it.

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  17. Which of the following are coloured in aqueous solution? Give rea-sons...

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  18. Which of the following oxides are amphoteric? Mn2O7,CrO3,CrO3,V2O5

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  19. Explain why most of the Cu (1) compounds are unstable in aqueous solut...

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  20. What happens when MnO(4)^(2-) ion is kept in acid medium? Write bal-an...

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