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What are optimum temperature and pH for ...

What are optimum temperature and pH for the enzymes to act best ?

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Temperature 298-310 K and pH 5 to 7
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CBSE COMPLEMENTARY MATERIAL-SURFACE CHEMISTRY-VERY SHORT ANSWER TYPE QUESTIONS (1 MARK)
  1. Name the catalyst used in the following process : (a) Haber's proce...

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  2. Which group elements show maximum catalytic activity for hydrogenation...

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  3. Why gas masks are used by miners in coal mines while working ?

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  4. Write the chemical reaction involed in the preparation of sulphur sol.

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  5. What are optimum temperature and pH for the enzymes to act best ?

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  6. What are the physical states of dispersed phase and disperation medium...

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  7. What is the composition of colloidion solution ?

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  8. Why do colloidal particles show Brownian movement ?

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  9. State the sigh of entropy change involved when the molecules of a subs...

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  10. Why does sky appear blue to us ?

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  11. What happens when hydrated ferric oxide and arsenious sulphide sols ar...

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  12. Gelatin is generally added to ice creams. Why?

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  13. How is take test for aluminium ion based upon adsorption ?

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  14. Mention the two conditions for the formation of micelles.

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  15. How is Brownain movement responsible for the stability of sol ?

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  16. Which of the following is more effective in coagulating positively cha...

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  17. State the purpose of impregnating the paper with colloidion solution .

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  18. Mention one use of ZSM-5 catalyst.

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  19. Why is it necessary to remove CO when ammonia is obtained by Haber's p...

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  20. Explain the terms : (i) CMC, (ii) Kraft temperature (T(k)).

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