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- What is dry ice ?
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- What is the unit of pressure ?
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- What is the SI unit of pressure ?
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- What is normal atmospheric pressure ?
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- How does a liquid change into vapour without boiling ?
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- Give one example of evaporation.
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- Name the process of conversion of liquid into gaseous state without bo...
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- Name the factors which increase rate of evaporation ?
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- Why rate of evaporation increases with the increase in temperature.
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- Why do clothes dry faster with the increase in speed of wind ?
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- What is humidity ?
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- How is evaporation related to humidity ?
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- Why are clothes spread out for drying ?
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- How is cooling related to evaporation ?
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- Why should we wear cotton clothes in summer ?
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- How are particles present in plasma ?
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- What is present in florescent tube and neon bulb ?
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- Why do sun and stars glow ?
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- Why is plasma produced in stars ?
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- How is BEC produced ?
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