Q137 / 270 · NDA 2011 (Phase 1) · General Ability

Iron nails are dipped into blue copper sulphate solution. After some time iron nails are:

  • Correct answer
    A
    dissolved and blue colour is discharged.
  • B
    dissolved but blue colour is not discharged.
  • C
    not dissolved but blue colour is not discharged.
  • D
    not disssolved but blue colour is discharged.

Solution

The correct answer is option (A).

Hence, the correct answer is option: 'A'.

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