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15
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An iron washer is heated. State its effect on the inner diameter, mass and density
inner diameter increases, mass and density remains the same
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15
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Among the three states of matter: solids, liquids and gases, which state of matter expands the least?
solid
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15
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The working of a bimetallic strip is based on which principle?
Unequal expansion rates of solids
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baam
Lose 10 points!
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gift
Win 20 points!
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rocket
Go to first place!
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baam
Lose 25 points!
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15
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Name any one factor affecting cubical expansion of liquids
nature of liquid, rise in temperature, original volume of the liquid
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15
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How does perspiration in summer keep our bodies cool?
When we perspire, the heat from the body is used to evaporate the sweat, thus making our bodies cool.
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