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Matter in Our S...

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  • Question 1
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    Which of the following is a correct statement?

  • Question 2
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    Which of the following applications illustrate that evaporation leads to cooling?

  • Question 3
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    Match Column I with Column II and select the correct option from the codes given below

    Column IColumn II
    (a) Drying of clothes on a windy day(i) Time taken for evaporation increases
    (b) Liquefaction of gases(ii) Decreasing pressure and increasing temperature
    (c) Change in state of dry ice from solid to gas(iii) Increasing pressure and decreasing temperature
    (d) Less cooling effect of sweating in coastal areas(iv) Rate of evaporation increases

  • Question 4
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    The percentage of para hydrogen in ordinary hydrogen increases when?

  • Question 5
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    Statement I : Evaporation causes cooling.
    Statement II: Particles of liquid absorb energy from the surrounding to regain the energy lost during evaporation.

  • Question 6
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    Intermolecular space is the least in?

  • Question 7
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    The beans are cooked earlier in pressure cooker, because:

  • Question 8
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    Water vapor contains a huge amount of stored energy known as

  • Question 9
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    select the order of evaporation for water, alcohol, petrol, and kerosene oil. 

  • Question 10
    1 / -0

    Which of the following is the BEST indicator of the actual amount of water vapour in the air?

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