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Solution, Mixtu...

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  • Question 1
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    If 20 gm of salt is present in 200 gm of solution, then the concentration of the solution will be

  • Question 2
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    A solution contains 20 g of sugar dissolved in 100 g of water. The concentration of the solution is

  • Question 3
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    We have following statements about air.
    (i) Air can be separated into its constituents by simple physical methods
    (ii) Air shows the properties of all the gases present in it
    (iii) Air has a variable composition
    (iv) Liquid air does not have a fixed boiling point.
    Now which of the above statements shows that air is a mixture?

  • Question 4
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    Which of the following statements about a true solution is not correct?

  • Question 5
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    Which of the following substances is an example of a solution of gas in a liquid?

  • Question 6
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    Which of the following substances is heterogeneous in nature?

  • Question 7
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    Components of air can be separated from one other with the help of

  • Question 8
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    For complete separation of two or more miscible liquids, which of the following methods is used?

  • Question 9
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    A solution is prepared by dissolving 110 g of salt in water. If the concentration of the solution is 20 percent, then the mass of the solution will be

  • Question 10
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    A solution is prepared by dissolving 30 g of sugar in some water. If the concentration of the solution is 7.5 percent, then the mass of the solvent will be

  • Question 11
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    Which of the following is an example of solution of solids in liquid?

  • Question 12
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    Which of the following solutions will scatter light?

  • Question 13
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    During which of the following processes the mass of the substance involved does not undergo a change

  • Question 14
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    During which of the following processes the mass of the substance involved undergoes a change?

  • Question 15
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    Which of the following methods of separation consists of a stationary phase and a mobile phase?

  • Question 16
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    Which of the following products is formed by the destructive distillation of bituminous coal?

  • Question 17
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    During the separation of components of air by the fractional distillation method, which of the following gases is obtained the first?

  • Question 18
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    During the fractional distillation of liquid air, which of the following gases is obtained in the end?

  • Question 19
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    Separation of two liquids by fractional distillation depends upon which property of the liquids?

  • Question 20
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    Distillation can be used to separate a _______ from dissolved _______.

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