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Is Matter Aroun...

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  • Question 1
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    Use the following information to answer the next question.

    Crude petroleum oil is a complex mixture of organic liquids that occurs naturally beneath Earth’s surface. It was formed millions of years ago. Crude oil is vaporized and made to undergo fractional distillation where its components get separated as shown in the figure.

    The organic liquids present in crude oil are separated in a fractional distillation chamber because they have different

  • Question 2
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    Which of the following materials consists of a single type of atoms?

  • Question 3
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    Matter is made up of tiny particles. Though it can be broken into smaller particles, a stage comes when further division is not possible.

    The unbreakable tiny particle of matter is called

  • Question 4
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    The alloy of copper and zinc is known as and the alloy of carbon and iron is known as.

    Which alternative completes the above statement?

  • Question 5
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    A piece of ice was taken in a closed conical flask and weighed. The flask was then kept at room temperature to melt the ice into water and was weighed again. It was found that there was no change in the weight of the flask, although a physical change had occurred.

    During the melting of ice to form water, the number of atoms

  • Question 6
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    A chemical compound is composed of

  • Question 7
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    Cryolite occurs in nature in the form of glassy and colourless monoclinic crystals. It is used in the electrolytic processing of the aluminum-rich oxide ore. The chemical formula of cryolite is Na3AlF6.

    Cryolite can be classified as

  • Question 8
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    Hydrochloric acid (HCl) is present in the stomach of human beings.

    Hydrochloric acid is

  • Question 9
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    Blue vitriol is a solution whose chemical formula is CuSO4.5H2O

    Blue vitriol can be classified as

  • Question 10
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    The common name of mercury is quicksilver.

    What is quicksilver?

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