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12th Standard English Medium Chemistry Subject p - Block Elements - II Book Back 5 Mark Questions with Solution Part - I updated Book back Questions Question Bank Software May-13 , 2022

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12th Standard English Medium Chemistry Subject p - Block Elements - II Book Back 5 Mark Questions with Solution Part - I updated Book back Questions

12th Standard English Medium Chemistry Subject p - Block Elements - II Book Back 5 Mark Questions with Solution Part - I

12th Standard

    Reg.No. :
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Chemistry

Time : 01:00:00 Hrs
Total Marks : 25

    Part I

    5 x 5 = 25

  1. Give two equations to illustrate the chemical behaviour of phosphine.

  2. What happens when PCl5 is heated?

  3. Suggest a reason why HF is a weak acid, whereas binary acids of the all other halogens are strong acids.

  4. Deduce the oxidation number of oxygen in hypofluorous acid – HOF.

  5. What type of hybridisation occur in
    a) BrF5
    b) BrF3

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