1) In SI unit of temperature is a. Degree C b. F c. K d. Ampere
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2) A very good conductors of heat contains a. metals b. non-metals c. liquids d. gases
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3) Materials trapped air by fur, feathers, wool and sawdust are heat a. insulators b. conductors c. gainers d. losers
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4) A solar panel is kept black surface so that it absorbs more a. heat b. water c. air d. oxygen
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5) Water freezes at a. 98 C b. 100 C c. 97 C d. 0 C
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6) Railway tracks have gaps between them to deal with expansion in a. hot days b. cold days c. winters d. snow fall
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7) Heat loss may help the matter to a. expand b. contract c. spread d. stable
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8) A joint which is made between adjoining rails to expand without bending is called a. rail joint b. sliding joint c. expansion joint d. contraction joint
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9) In melting of ice cube the heat gain a. melts ice b. increase temperature c. gain energy d. release energy
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10) Mercury is a. harmless b. safe c. non-toxic d. poisonous
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