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Solutions Model Question Paper

11th Standard

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Chemistry

Time : 01:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. Vapour pressure is the pressure exerted by vapours

    (a)

    in equilibrium with liquid

    (b)

    in any condition

    (c)

    in an open system

    (d)

    in atmospheric conditions

  2. A sample of toothpaste weighting 500g, on analysis was found to contain 0.2g of fluorine. The concentration of fluorine in ppm is

    (a)

    4 x 103

    (b)

    4 x 102

    (c)

    4 x 10

    (d)

    2 x 102

  3. For associative solutes

    (a)

    i < 1 and a < 1

    (b)

    i > 1 and a >. 1

    (c)

    i < 1 and a < 1

    (d)

    i > 1 and a < 1

  4. For a non-electrolytic solution

    (a)

    i =+ve

    (b)

    i = -ve

    (c)

    i = 0

    (d)

    i = 1

  5. The normality of 10% weight/volume) acetic and is

    (a)

    1 N

    (b)

    10 N

    (c)

    1.7 N

    (d)

    0.83 N

  6. 5 x 2 = 10
  7. State Raoult's law

  8. Write a short note on Van't Hoff equation

  9. Define formality.

  10. Define mole fraction.

  11. What are non-ideal solution? Give example.

  12. 5 x 3 = 15
  13. Distinguish between ideal and non-ideal solution

  14. How does the change in temperature, pressure, and concentration causes deviation from' ideal behaviour?

  15. Discuss the significances of osmotic-pressure over other colligative properties.

  16. Caiculate the molefraction of each component in a mixture containing 40 mass percent of toluene in CHCI3

  17. What are the significances of osmotic pressure over other colligative properties?

  18. 4 x 5 = 20
  19. Write note on reverse osmosis and explain its application in desalination of sea water.

  20. Calculate the percent by mass of NaC lif 1.75 g of NaCI is dissolved in 7.85 g of water.

  21. (I) Define solution.
    (il) E plain the types of solutions with suitable example.

  22. (I) Define Solubility
    (ii) Explain about the factors that influences the solubility

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