MCQ
Colour of Fe2+ ions is:
- ABlue.
- BLight green.
- CVery dark green.
- DYellow.
Explanation:
Colour of Fe2+ is light green.
Due to this many salts having Fe2+ ion are also green in colour.
For ex: FeSO4
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

| Column I | Column II |
| (a) $\frac{\Delta P }{ P ^{\circ}{ }_A}$ | (i) $\frac{\Delta T _{ b }}{ m }$ |
| (b) Kb | (ii) mol fraction of solute |
| (c) i | (iii) $\frac{\Delta T _{ f }}{ m }$ |
| (d) Kf | (iv) Ratio of observed molar mass to actual molar mass |