Recent questions in Chapter 14 Substances in Common Use

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Why has the use of methods like Teflon coating become more common?

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What type of colours will you use to celebrate ecofriendly Rang Panchami? Why?

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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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