Student | Metal | Solution | Colour change of solution | Deposit/coating obtained |
A | Fe | Turned green | Silvery grey deposit | |
Zn | No change | No change | ||
B | Fe | No change | Black deposit | |
Zn | Colour faded | Grey coating | ||
C | Fe | No change | No change | |
Zn | Turned colourless | Black deposit | ||
D | Fe | No change | Grey deposit | |
Zn | No change | Black deposit |
Answer:
Student
C
(a) Fe is less reactive than zinc. So
No reaction
(b) Zn is more reactive than Fe, so it displaces iron as follows
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