Solutions Model Question Paper

10th Standard

    Reg.No. :
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Science

Time : 01:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. Quick lime is dissolved in water is a ______________ process.

    (a)

    exothermic

    (b)

    endothermic

    (c)

    reversible

    (d)

    both (a) and (b)

  2. Example for solid in solid ___________

    (a)

    Soda water

    (b)

    Camphor in air

    (c)

    Charcoal

    (d)

    alloy

  3. In which of the following solutions, both solute and solvent are solids?

    (a)

    cork

    (b)

    cheese

    (c)

    alloys

    (d)

    smoke

  4. Solubility of KNO3 ____________ with the increases in temperature.

    (a)

    increases

    (b)

    decreases

    (c)

    remains constant

    (d)

    None of these

  5. 4 x 2 = 8
  6. What is (a) Blue vitriol (b) Epsom

  7. Find the concentration of solution in terms of weight percent if 20g of sugar is dissolved in 40g of water

  8. Define trinary solution

  9. Define hydration

  10. 4 x 4 = 16
  11. Write notes on various factors affecting solubility.

  12. a) What happens when MgSO4.7H2O is heated? Write the appropriate equation
    b) Define solubility

  13. Explain Solid solution, Liquid solution and Gaseous solution.

  14. Write some solubility substances in water at 25°C.

  15. 2 x 7 = 14
  16. 'A' is a blue coloured crystalline salt. On heating it loses blue colour and to give 'B'. When water is added, 'B' gives back to 'A'. Identify A and B, write the equation.

  17. Will the cool drinks give more fizz at top of the hills or at the foot? Explain.

  18. 1 x 7 = 7
  19. A solution is made from 35 ml of Methanol and 65 ml of water. Calculate the volume percentage.

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