Qualitative Analysis - Result Question 35

####38. The metal rodM is

(a) Fe

(b) Cu

(c) Ni

(d) Co

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Answer:

Correct Answer: 38. (b)

Solution:

  1. Appearance of blue colour on addition of the metal rodM to the solution of N is an indication that metal may be Cu. Later formation of white precipitate on addition of NaCl and dissolution of this precipitate in aqueous ammonia confirm that while precipitate is of AgCl. This implies that the solution N is of AgNO3. This confirm that the metal M is only Cu.


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