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STD 4 Science set 7

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    1)
  1. : What is the organ responsible for pumping blood throughout the human body?
    1)

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    2)
  1. : What is the process by which plants release water vapor into the air?
    2)

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    3)
  1. : Identify the process of a liquid turning into a gas below its boiling point?
    3)

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    4)
  1. : What is the outermost layer of the Earth's atmosphere called?
    4)

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    5)
  1. : Identify the force that opposes the relative motion or tendency of such motion of two surfaces in contact.
    5)

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    6)
  1. : Which organ in our body helps in filtering out waste and producing urine?

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    7)
  1. : Identify the type of energy associated with the motion of objects.
    7)

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    8)
  1. : What is the process of changing a liquid into a solid called?

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    9)
  1. : Identify the process where a solid turns directly into a gas without passing through the liquid state.
    9)

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    10)
  1. : Which of the following is a source of energy obtained from the sun?

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    11)
  1. : What is the process of plants making food using sunlight?

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    12)
  1. : Which of the following is a type of simple machine used to lift heavy objects?

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    13)
  1. : Which planet is known as the "Morning Star" when visible in the eastern sky before sunrise?
    13)

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    14)
  1. : Which of the following is a product of photosynthesis?

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    15)
  1. : What gas do humans primarily exhale when breathing out?
    15)

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    16)
  1. What is the process of a solid turning directly into a gas without becoming a liquid called?
    16)

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    17)
  1. : Which planet is known as the "Ringed Planet"?

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    18)
  1. : What is the process of a gas turning into a liquid called?
    18)

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    19)
  1. : What is the process of the Earth rotating on its axis called?

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    20)
  1. : Identify the process by which a liquid turns into a solid.
    20)

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    21)
  1. : Which of the following is a renewable source of energy obtained from the Earth's internal heat?
    21)

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    22)
  1. : Which of the following is a natural resource that comes from plants and animals?
    22)

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    23)
  1. : What gas do humans breathe in to survive?

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    24)
  1. : Which of the following is a renewable resource derived from the sun's ray?
    24)

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    25)
  1. : What gas do humans primarily exhale when breathing out?
    25)

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