2. An iron weight at 45 °C is dipped in a bucket containing water at 45 °C. The heat will<br />(b) flow from iron weight to water.<br />(d) flow and increase the temperature of both.<br />(a) flow from water to iron weight.<br />(c) not flow between them.<br />3. Conduction can take place when<br />(a) two objects are in contact.<br />(b) temperatures of two objects are not same.<br />(c) both (a) and (b).<br />(d) none of these.<br />(a) durable.<br />(c) easy to clean.<br />4. Cooking utensils are made up of metals because metals are<br />(b) good conductors of heat.<br />(d) none of these.<br />5. A wooden spoon is used to make vegetable in a metal frying pan. Its other end<br />(a) becomes hot because of conduction.<br />(b) becomes hot because of convection.<br />(c) becomes hot because of radiation.<br />(d) does not become hot.<br />6. A thermos flask keeps a liquid hot by preventing heat loss through<br />(a) conduction. (b) convection. (c) radiation.<br />(d) all of these.<br />7. The temperature of water can be measured with the help of<br />(a) maximum and minimum thermometer. (b) metal thermometer.<br />(c) laboratory thermometer.<br />(d) clinical thermometer.
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