STD 5 Science set 1
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1) Salt is obtained from sea water by the Process of ________
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2) ________ is the outermost layer of the earth.
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3) Addition of small doses of chlorine gas into filtered water is known as :
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4) Which of the following are the properties of air?
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5) The outermost layer of the earth is called _____
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6) _______ is very cold but the water in pools and lakes is warm.
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7) The sun is about ______ times bigger than the earth's diameter.
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8) In which layer of the Earth's atmosphere is ozone found?
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9) This water is mainly used in car batteries, in science labs and in medicines.
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10) The moon completes one rotation in about _______ days.
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11) Riya took a deep breath and blew into a balloon to make it puff up. What does this show?
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12) The inner core is like a solid ball made of :
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13) A small object that revolves around a planet is :
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14) The _____ is the centre of the solar system:
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15) Which of the following is the layer of atmosphere?
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16) The moon has no
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17) A scientist who studies objects in space such as stars, moons, planets, etc. Is called a/an
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18) Why does the moon appear to be larger than the stars ?
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19) ________ occurs when the moon comes in between the earth and the sun .
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20) The moon completes one revolution around the earth in _____
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21) When the size of the bright portion of the moon grows , it is called ______
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22) Any object that revolves around a planet in a fixed path is called a ______
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23) Pick out the wrong statement.
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24) Which of the following satellites are used for transmitting television programmes ?
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25) In which of the methods of water purification is the water with insoluble impurities left undisturbed?
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