2.A bottle contains either salt or Chalk.How will you find out what it has, without tasting it
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Explanation:
To find out whether a bottle contains salt or chalk without tasting it, the method is simple. Dissolve it in water. You will observe that if it is salt (sodium chloride) it will dissolve in water but if it is chalk (calcium carbonate) it will not dissolve in water.
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by it's texture?
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hope it helps
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