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Soap forms a precipitate in hard water.
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Bleaching powder has the odour of chlorine.
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Write down properties of teflon.
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Where in the industrial field is radioactivity used?
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Which diseases are caused by artificial food colours ?
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When is said to be the nucleus unstable?
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What is meant by radioactivity?
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Match the pairs Saturated brine a. sodium metal free
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Fill in the blanks .
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What are the different types of coal? What are their uses.
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Practical uses of CO2.
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Use of CO2 in the fire extinguisher.
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Uses of various allotropes of carbon.
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Petrol, diesel, coal are fossil fuels.
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