Q.

Which one of the following is insoluble in water?

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a

Turmeric powder

b

Common salt

c

Alum

d

Coffee powder

answer is A.

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Detailed Solution

  • The substances which do not get dissolved in water are said to be insoluble in water.
  • Alum, Coffee power, and common salt dissolve in water. Therefore, they are said to be soluble in water.
  • Turmeric contains cellulose, protein, etc that cannot be dissolved in water therefore, we can say that it is insoluble in water.

Therefore, 'Turmeric' is the correct response.

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