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- Answer the following : What are convection currents?
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- Answer the question in short: Explain which mode of heat transfer caus...
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- Answer the question in short: Which one of these will absorb the heat...
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- Answer the following question: Why does the halwai wrap up clothes ar...
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- Answer the question in short: Why heaters fitted near the floor and a...
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- Give scientific reasons: Dew drops are formed on the grass in winter.
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- Answer the question in short: Why are the houses in Rajasthan painted ...
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- Answer the question in short: Why is the outer coat of penguins of Ant...
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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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- Give scientific reasons: In winter why does an iron pillar feel colde...
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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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- 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 reason : Why does a hot substance not remain hot after two or th...
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- Rub your palms against each other and put them on your cheeks. What do...
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- Apparatus: Bars of stainless steel, aluminium and copper, a candle, a ...
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- Apparatus: A beaker, potassium permaganate crystals, a burner, water, ...
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- Light a candle and stand it upright. Hold your hands on its two sides ...
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