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Is Matter Aroun...

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  • Question 1
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    Which of the following mechanical mixtures can be separated by making use of the solubility of one of its components in water?

  • Question 2
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    Use the following information to answer the next question.

    Physical changes occur mostly in the direction of solid to liquid to gas or gas to liquid to solid. Sometimes, solids get directly converted into the gaseous state. Such a change takes place when camphor burns.

    The direct change of a solid into the gaseous state is called

  • Question 3
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    Use the following information to answer the next question.

    A material containing two or more substances is known as a mixture. Mixtures can be classified as homogeneous and heterogeneous depending upon the composition of substances present.

    A mixture is said to be homogeneous if its

  • Question 4
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    Use the following information to answer the next question.

    During distillation, a liquid is first heated to form vapour and then, these vapours are collected and condensed to form liquid again. Distillation is used for identification as well as purification of organic compounds.

    Two miscible liquids can be separated using simple distillation if the temperature difference between their boiling points is less than

  • Question 5
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    Use the following information to answer the next question.

    A homogeneous mixture (solution) is one in which the particle size is in the order of atomic or molecular size and the particles are distributed uniformly throughout.

    A homogeneous mixture consists of

  • Question 6
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    Use the following information to answer the next question.

    A material containing two or more substances is known as a mixture. Mixtures can be classified as homogeneous and heterogeneous depending upon the composition of substances present.

    A mixture is said to be heterogeneous if

  • Question 7
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    Which of the following mixtures is an example of a homogeneous mixture of metals?

  • Question 8
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    Which of the following mixtures is an example of a homogeneous mixture existing in the solid phase?

  • Question 9
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    Which of the following mixtures is a mechanical mixture that exists in liquid state?

  • Question 10
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    Use the following information to answer the next question.

    A mixture is said to be heterogeneous if its composition is not uniform throughout. A heterogeneous mixture is also called a mechanical mixture since its components can be separated by simple physical methods.

    Which of the following mixtures is a mechanical mixture?

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