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12th Standard English Medium Chemistry Subject Surface Chemistry Book Back 3 Mark Questions with Solution Part - I Question Bank Software Jun-02 , 2021

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12th Standard English Medium Chemistry Subject Surface Chemistry Book Back 3 Mark Questions with Solution Part - I

12th Standard English Medium Chemistry Subject Surface Chemistry Book Back 3 Mark Questions with Solution Part - I

12th Standard

    Reg.No. :
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Chemistry

Time : 00:30:00 Hrs
Total Marks : 15

    Part I

    5 x 3 = 15

  1. Peptising agent is added to convert precipitate into colloidal solution. Explain with an example.

  2. What is the difference between a sol and a gel?

  3. Addition of Alum purifies water. Why?

  4. What are enzymes? Write a brief note on the mechanism of enzyme catalysis.

  5. Describe some feature of catalysis by Zeolites.

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