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Sodium is always kept in kerosene.
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Generally the ionic compounds have high melting points.
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Explain the term Gangue
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Explain the term Minerals
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Explain the term Ores
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Metallurgy Explain the terms.
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Identify the pairs of metals and their ores from the following.
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Distinguish between b. Concave lens and Convex Lens
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Distinguish between: a. Farsightedness and Nearsightedness
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One can sense colours only in bright light.
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