MCQ
Which of the following aqueous solution has highest freezing point ?
- A$0.12\, m-Ca(NO_3)_2$ solution
- B$0.15\, m-NaCl$ solution
- ✓$0.2 \,\,m-$urea solution
- D$0.2 \,\,m-$CH_3COOH solution
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
|
List-$I$ (Complexion) |
List-$II$ (Spin only magnetic moment in B.M.) |
| $A$ ${\left[\mathrm{Cr}\left(\mathrm{NH}_5\right)_0\right]^{3+}}$ | $I$ $4.90$ |
| $B$ ${\left[\mathrm{NiCl}_4\right]^{2-}}$ | $II$ $3.87$ |
| $C$ ${\left[\mathrm{CoF}_6\right]^{3-}}$ | $III$ $0.0$ |
| $D$ ${\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}}$ | $IV$ $2.83$ |
Choose the correct answer from the options given below:
$(A)$ $\mathrm{Sc}$ $(B) \mathrm{Cr}$ $(C) \mathrm{V}$ $(D)$ $\mathrm{Ti}$ $(E)$ $\mathrm{Mn}$
Choose the correct answer from the options given below:
[Given, atomic number: $Mn =25, Fe =26, Co =27$; en $= H _2 NCH _2 CH _2 NH _2$ ]
Reason : Grignard reagents react with hydroxyl group