MCQ
The radium of an atom is about
- Athe same as the volume of its nucleus
- Bfour times the radius of its nucleus
- ✓$10,000$ times the radius its nucleus
- D$10^{12}$ times the radius of its nucleus
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[Molar mass of $\mathrm{KCl}=74.5$ ]
| Test | $C$ | $D$ |
| Ceric ammonium nitrate Test | Positive | positive |
| Lucas Test | Turbidity obtained after five minutes | Turbidity obtained immediately |
| Iodoform Test | Positive | Negative |
$C$ and $D$ respectively are
A current was passed for $10$ hours. $10.8\ g\ Ag$ was deposited at cathode in $(III)$ electrolytic cell during electrolysis if current efficiency is $50\%.$
What is magnitude of the current in ampere ?
$b. NH_3 < PH_3 < AsH_3$ Reducing power
$c. NI_3 > NBr_3 > NCl_3$ Lewis basic character
$d. N_2O_5 > P_2O_5 > As_2O_5$ Acidic character
Correct order is