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- Answer the question with neat and well labeled diagrams: Draw a well ...
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- Explain the following: Conduction of heat:
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- Explain the following: Convection of heat
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- Explain the following: Radiation
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- Use your brain power: Why do we wear woolen clothes in winter?
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- Use your brain power: Why do we use white clothes in summer and dark ...
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- Use your brain power: Why is there a gap at the joints of rails and o...
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- Use your brain power: Why is mercury or alcohol used in a thermometer...
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- Give scientific reasons: An ordinary glass bottle cracks when boiling...
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- Give scientific reasons: The telephone wires which sag in summer beco...
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- Give scientific reasons: Dew drops are formed on the grass in winter.
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- Give scientific reasons: In winter why does an iron pillar feel colde...
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- Give scientific reasons: We can feel the heat of a table lamp, under ...
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- Give scientific reasons: The hard water of a well becomes soft on ad...
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- Give scientific reasons: Ice is kept in sawdust to keep it from melti...
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- Give scientific reasons: An iron tyre is heated before it is fitted o...
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- Give scientific reasons: Two steel bowls stuck in each other can be s...
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- Answer the following question: For what different purpose do you use ...
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- Answer the following question: What can be different use of infrared ...
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- Answer the following question: Why does the halwai wrap up clothes ar...
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