MCQ
When copper rod donates electrons to hydrogen ions, it gains ................. charge.
- APositie.
- BNegative.
- CNo charge.
- DCan't say.
Explanation:
We know that when an atom donates electrons, the atom becomes positive charge and when the atom receives the electrons, it becomes negative charge.
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| Column I | Column II |
| (а) Кь | (i) Elevation in boiling point |
| (b) Kf | (ii) Van't Hoff factor |
| (c) i | (iii) Cryoscopic constant |
| (d) $\Delta T _{ b }$ | (iv) Ebullioscopic constant |