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UPSC Prelims 2002Question 132Science & Technology

Assertion (A): Synthetic detergents can lather well in hard water. Reason (R): Synthetic detergents form soluble calcium and magnesium salts with hard water.

Options

  1. (a)Both A and R are individually true and R is the correct explanation of A
  2. (b)Both A and R are individually true but R is not a correct explanation of A
  3. (c)A is true but R is false
  4. (d)A is false but R is true

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