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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. Give a reaction between nitric acid and a basic oxide.

  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. Complete the following reactions.
    \(1. \mathrm{NaCl}+\mathrm{MnO}_{2}+\mathrm{4H}_{2} \mathrm{SO}_{4} \longrightarrow \)
    \(2. \mathrm{NaNO}_{2}+\mathrm{HCl} \longrightarrow \)
    \(3.\mathrm{P}_{4}+\mathrm{3NaOH}+\mathrm{3H}_{2} \mathrm{O} \longrightarrow \)
    \(4. \mathrm{AgNO}_{3}+\mathrm{PH}_{3} \longrightarrow \)
    \(5. \mathrm{Mg}+\mathrm{10HNO}_{3} \longrightarrow \)
    \(6. \mathrm{KClO}_{3} \stackrel{\Delta}{\longrightarrow} \)
    \(7. \mathrm{Cu}+Con. \ Hot \ \mathrm{H}_{2} \mathrm{SO}_{4} \longrightarrow\)
    \(8. \mathrm{Sb}+\mathrm{Cl}_2 \longrightarrow \)
    \(9. \mathrm{HBr}+\mathrm{H}_2 \mathrm{SO}_4 \longrightarrow \)
    \(10. \mathrm{XeF}_6+\mathrm{H}_2 \mathrm{O} \longrightarrow \)
    \(11. \mathrm{XeO}_6{ }^{4-}+\mathrm{Mn}^{2+}+\mathrm{H}^{+} \longrightarrow \)
    \(12. \mathrm{XeOF}_4+\mathrm{SiO}_2 \longrightarrow \)
    \(13. \mathrm{Xe}+\mathrm{F}_2 \frac{\mathrm{Ni} / 200 \mathrm{~atm}}{400^{\circ} \mathrm{C}}\)
    .

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