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Is Matter Aroun...

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  • Question 1
    1 / -0

    Crude oil is purified using fractional distillation process. This method works on the principle of:

  • Question 2
    1 / -0

    Evaporation followed by condensation occurs in:

  • Question 3
    1 / -0

    Which of the following statements is not true about suspension ?

  • Question 4
    1 / -0

    Which one of the following is not a property of solution?

  • Question 5
    1 / -0

    Raghav, Ajay and Nita were given three test tubes K, L and M respectively containing unknown substances They observed the following properties about their solutions

    SubstanceProperty
    KThe components can be separated by filtration
    LParticles scatter the light
    MParticles size is $$\displaystyle 10^{-9}$$ to $$\displaystyle 10^{-7}$$ m
    On the basis of the above properties identify the solutions K, L and M respectively

  • Question 6
    1 / -0

    Which of the following involves fractional distillation?
    i. Separation of constituents from liquefied air
    ii. Separation of constituents from crude petroleum
    iii. Separation of carbon tetrachloride from water
    iv. Separation of naphthalene from common salt.

  • Question 7
    1 / -0

    Which of the following best describes the methods to separate a mixture of two miscible liquids and two immiscible liquids​ respectively?

  • Question 8
    1 / -0

    A mixture of sodium chloride and calcium carbonate is separated using the steps given. In which order should the steps be carried out?

  • Question 9
    1 / -0

    Does Nandita have a liquid $$Y$$ which boils at 388 K.  Which of the following separation method will Nandita adopt to separate $$Y$$ from a mixture containing another substance $$Z$$ which boils at 368 K?
    (Both $$Y$$ and $$Z$$ are miscible)

  • Question 10
    1 / -0

    In which of the following, dispersed phase is a liquid while dispersion medium is a gas?

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