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12th Standard English Medium Chemistry Subject p - Block Elements - II Creative 1 Mark Questions with Solution Part - II

12th Standard

    Reg.No. :
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Chemistry

Time : 00:30:00 Hrs
Total Marks : 5
    5 x 1 = 5
  1. The incorrect statement regarding structure of ozone is______.

    (a)

    Bond angle is less than 120°

    (b)

    It is linear

    (c)

    The two oxygen-oxygen bond length in ozone are identical

    (d)

    Both (b) and (c).

  2. Strong reducing behaviour of H3PO2 is due to______.

    (a)

    High oxidation state of phosphorus

    (b)

    High electro gain enthalpy of phosphorus

    (c)

    Presence of two-OH groups and one P-H bond

    (d)

    Presence of one-OH groups and two P-H bonds

  3. Which reaction is not feasible.

    (a)

    \({ 2H }_{ 2 }O+{ 2F }_{ 2 }\longrightarrow 4HF+{ O }_{ 2 }\)

    (b)

    \(2 \mathrm{KBr}+\mathrm{I}_{2} \longrightarrow 2 \mathrm{KI}+\mathrm{Br}_{2}\)

    (c)

    \(2KBr+{ Cl }_{ 2 }\longrightarrow 2KCl+{ Br }_{ 2 }\)

    (d)

    \(2 \mathrm{KI}+\mathrm{Br}_{2} \longrightarrow 2 \mathrm{KBr}+\mathrm{I}_{2}\)

  4. The ionisation energy of Ga is higher than that of Al because of_________

    (a)

    more effective nuclear charge of Ga

    (b)

    smaller atomic size of Ga

    (c)

    larger size of Ga

    (d)

    both (a) and (b)

  5. The high reactivity of fluorine is due to________.

    (a)

    high ionisation energy

    (b)

    low bond dissociation energy

    (c)

    low electron affinity

    (d)

    high electro negativity

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