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12th Standard English Medium Chemistry Subject Ionic Equilibrium Book Back 1 Mark Questions with Solution Part - I

12th Standard

    Reg.No. :
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Chemistry

Time : 00:30:00 Hrs
Total Marks : 5

    Part I

    5 x 1 = 5
  1. The solubility of BaSO4 in water is 2.42 × 10-3gL-1 at 298K. The value of its solubility product(Ksp) will be (Given molar mass of BaSO4 =233g mol-1)

    (a)

    1.08 × 10-14mol2L-2

    (b)

    1.08 × 10-12mol2L-2

    (c)

    1.08 × 10-10mol2L-2

    (d)

    1.08 × 10-8mol2L-2

  2. pH of a saturated solution of Ca(OH)2 is 9. The Solubility product (Ksp) of Ca(OH)2 _______.

    (a)

    0.5 × 10-15

    (b)

    0.25 × 10-10

    (c)

    0.125 × 10-15

    (d)

    0.5 × 10-10

  3. Conjugate base for Bronsted acids H2O and HF are _______.

    (a)

    OH- and H2FH+, respectively

    (b)

    H3O+ and F-, respectively

    (c)

    OH- and F-, respectively

    (d)

    H3O+ and H2F+, respectively

  4. Which will make basic buffer?

    (a)

    50 mL of 0.1M NaOH+25mL of 0.1M CH3COOH

    (b)

    100 mL of 0.1M CH3COOH+100 mL of 0.1M NH4OH

    (c)

    100 mL of 0.1M HCl+200 mL of 0.1M NH4OH

    (d)

    100 mL of 0.1M HCl+100 mL of 0.1M NaOH

  5. Which of the following fluro compounds is most likely to behave as a Lewis base?

    (a)

    BF3

    (b)

    PF3

    (c)

    CF4

    (d)

    SiF4

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