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  • The working of a bimetallic strip is based on which principle?
    Unequal expansion rates of solids
  • Among the three states of matter: solids, liquids and gases, which state of matter expands the least?
    solid
  • 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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