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Mention two differences between bleachin...

Mention two differences between bleaching action of `SO_2` and `Cl_2`.

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UNITED BOOK HOUSE-HIGHER SECONDARY EXAMINATION 2019-EXERCISE
  1. Write two differeneces between physisorption and chemisorption.

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  2. What is peptisation? Give one example.

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

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

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

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

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

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

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

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

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

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

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

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  14. Write composition of copper matte.

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

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

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

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

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

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

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