12 Chemistry p Block Elements Test 08

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Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks CBSE TEST PAPER-08 CLASS - XII CHEMISTRY (P – block elements) Topic:- Hydrochloric acid, Interhalogen compounds, Group 18. 1. Complete and balance 1x10=10 a. NaHSO4 + NaCl 823 k → b. Au + NO3 - + 4H + +4Cl - → c. Na2 CO3 + 2HCl → d. Na2SO3 + 2HCl → e. Cl2 + 3F2 573 k → f. Br2 + 5F2 → g. XeF4+ O2F2 → h. XeF2 + PF5 → i. XeF6 + 3H2O → j. XeF6 + 2H2O → 2. Draw the structures of following: 1x6=6 (i) HOClO (ii) HClO4 (iii) BrF3 (iv) XeO3 (v) XeF4 (vi) XeF2 3. What are interhalogen compounds? Why are they more reactive than halogens? [2] 4. Noble gases have very low melting and boiling points. Why? [1] 5. Name a gas used [2] a) In gas – cooled nuclear reactors b) In fluorescent bulbs c) For filling electrical bulbs d) As cryogenic agent.

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Transcript of 12 Chemistry p Block Elements Test 08

  • Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks

    CBSE TEST PAPER-08

    CLASS - XII CHEMISTRY (P block elements)

    Topic:- Hydrochloric acid, Interhalogen compounds, Group 18.

    1. Complete and balance 1x10=10

    a. NaHSO4 + NaCl 823 k

    b. Au + NO3- + 4H+ +4Cl-

    c. Na2 CO3 + 2HCl

    d. Na2SO3 + 2HCl

    e. Cl2 + 3F2 573k

    f. Br2 + 5F2

    g. XeF4+ O2F2

    h. XeF2 + PF5

    i. XeF6 + 3H2O

    j. XeF6 + 2H2O

    2. Draw the structures of following: 1x6=6

    (i) HOClO (ii) HClO4 (iii) BrF3 (iv) XeO3

    (v) XeF4 (vi) XeF2

    3. What are interhalogen compounds? Why are they more reactive than halogens? [2]

    4. Noble gases have very low melting and boiling points. Why? [1]

    5. Name a gas used [2]

    a) In gas cooled nuclear reactors

    b) In fluorescent bulbs

    c) For filling electrical bulbs

    d) As cryogenic agent.


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