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Write the role of ‘CO’ in the purificati...

Write the role of ‘CO’ in the purification of nickel.

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To produce a volatile complex, which decomposes on further heating to give pure nickel.
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CBSE COMPLEMENTARY MATERIAL-PRACTICE PAPER 1-Questions
  1. A colloidal sol is prepared by the given method in figure. What is the...

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  2. How does chemisorption vary with temperature.

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  3. Write the role of ‘CO’ in the purification of nickel.

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  4. What is the role of silica in the extraction of copper?

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  5. What type of metals are generally extracted by electrolytic method?

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  6. (b) Why do transition metals form alloy ?

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  7. Give reasons for the following: Mn(2)O(3) is basic whereas Mn(2)O(7)...

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  8. Give reasons for the following: Eu^(2+) is a strong reducing agent.

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  9. Write the structure of monomers used for getting the following polymer...

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  10. Write the structure of monomers used for getting the following polymer...

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  11. Write the structure of monomers used for getting the following polymer...

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  12. Is [-CH(2)-overset(CH(3))overset(|)(CH)-](n) a homopolymer or copolyme...

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  13. Write the monomers of the following polymer:

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  14. What is the function of S in the vulcanization of rubber?

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  15. Why is bithional added to soap ?

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  16. Between sodiumhydrogen carbonate and magnesium hydroxide , which i...

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  17. Why are detergents non - biodegradable while soap are biodegradable ?

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  18. Define terms with a suitable example : Antibiotics

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  19. Artificial sweeteners.

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  20. Define terms with a suitable example : Analgesics

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