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Air and Atmosph...

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  • Question 1
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    Which of the following materials does not burn with a flame?

  • Question 2
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    Presence of which of the following components of air is indicated by milkiness in lime water, when air blown into it?

  • Question 3
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    Which of the following sources of air-pollution is not a result of human activities?

  • Question 4
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    Which substances are the components of acid rain?

  • Question 5
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    Which of the following means of transportation uses wind as a source of energy?

  • Question 6
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    Which of the following processes will not lead to air pollution?

  • Question 7
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    Which of the following components of air is filtered by the fine hair and mucus present in the nostrils during breathing?

  • Question 8
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    Rusting of iron signifies the

  • Question 9
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    Use the following information to answer the next question.

    This atmospheric gas is used by green plants to make food. It is produced by living organisms during respiration. It is also produced when an object is burned.

    The gas described is

  • Question 10
    1 / -0

    For combustion to take place, the essential conditions include the presence of

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