Solutions English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021

10th Standard

    Reg.No. :
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Science

Time : 00:10:00 Hrs
Total Marks : 10

    Part A

    10 x 1 = 10
  1. The number of components in a binary solution is _____________

    (a)

    2

    (b)

    3

    (c)

    4

    (d)

    5

  2. Identify the non aqueous solution.

    (a)

    sodium chloride in water

    (b)

    glucose in water

    (c)

    copper sulphate in water

    (d)

    sulphur in carbon-di-sulphide

  3. Solubility of NaCl in 100 ml water is 36 g. If 25 g of salt is dissolved in 100 ml of water how much more salt is required for saturation _____________

    (a)

    12g

    (b)

    11g

    (c)

    16g

    (d)

    20g

  4. Which of the following is hygroscopic in nature?

    (a)

    ferric chloride

    (b)

    copper sulphate penta hydrate

    (c)

    silica gel

    (d)

    none of the above

  5. 40 g of sodium chloride in 100 g of water at 250 C forms ________ solution.

    (a)

    Super saturated

    (b)

    Unsaturated

    (c)

    Saturated

    (d)

    Both (a) and (b)

  6. Anhydrous copper sulphate is _______ in colour.

    (a)

    blue

    (b)

    bluish green

    (c)

    colourless

    (d)

    black

  7. Quick lime is dissolved in water is a ______________ process.

    (a)

    exothermic

    (b)

    endothermic

    (c)

    reversible

    (d)

    both (a) and (b)

  8. Non-aqueous solvent is ____________

    (a)

    benzene

    (b)

    ether

    (c)

    CS2

    (d)

    All the above

  9. An example for a solution containing liquid solute in gas solvent is ____________

    (a)

    soda water

    (b)

    cloud

    (c)

    cork

    (d)

    smoke

  10. Solubility of CaO _____ with the increases in temperature.

    (a)

    increases

    (b)

    decreases

    (c)

    remains constant

    (d)

    None of these

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