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Answer the following questions (Alternat...

Answer the following questions (Alternatives are to be noted): Why is BHA added in butter?

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UNITED BOOK HOUSE-HIGHER SECONDARY EXAMINATION 2019-EXERCISE
  1. Which of the following is strongest base?

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  2. Charge carried by 1 mole PO4^(3-) ions is.

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  3. Answer the following questions (Alternatives are to be noted): Why is ...

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  4. Why is magnetic moment of ferric compound more than ferrous com-pounds...

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  5. Write general electronic configuration of actinoids.

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  6. How can a colloidal solution and true solution of the same colour be d...

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  7. Arrange Li+,Na+ and Rb+ ions in the ascendign order of their molar ion...

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  8. What is the unit of electro-chemical equivalent?

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  9. Answer the following questions (Alternatives are to be noted): KBr und...

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  10. What is azeotropic mixture? Can it be considered as ideal solution?

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  11. Write two differeneces between physisorption and chemisorption.

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  12. What is peptisation? Give one example.

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

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

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

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

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

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

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

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

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