MCQ
What electrolyte is used to electroplate silver onto a spoon?
- APure water.
- BSilver nitrate.
- CCopper sulfate.
- DAcidified water.
Explanation:
In silver plating, the object (eg.spood) to be plated is made the cathode of an electrolytic cell. The anode is bar of silver metal and the electrodyte must contain Ag + ions (i.e. AgNO3), so that when the direct current is passed through the cell, positive (Ag+) ions move towards the negative anode (spoon) where they are neutralized by e− and stick to spoon as silver metal.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| List $I$ (Amines) | List $II$ $\left( pK _{ b }\right)$ |
| $A$ Aniline | $I$ $3.25$ |
| $B$ Ethanamine | $II$ $3.00$ |
| $C$ $N-$Ethylethanamine | $III$ $9.38$ |
| $D$ $N, N-$Diethylethanamine | $IV$ $3.29$ |
Choose the correct answer from the options given below :-
$A : 1s^2\, 2s^2\, 2p^6$
$B : 1s^2\, 2s^2\, 2p^6\, 3s^2\, 3p^3$
$C : 1s^2\, 2s^2\, 2p^6\, 3s^2\, 3p^5$