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UPSC Prelims 2000Question 122Science & Technology

Consider the following statements: Hard water is not suitable for I. drinking. II. washing cloths with soap. III. use in boilers. IV. irrigating crops. Which of these statements are correct ?

Options

  1. (a)I and III
  2. (b)II and III
  3. (c)I, II and IV
  4. (d)I, II, III and IV

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