Ans 1:
Ans 2:
Ans 5: (Master Answer)
The correct answer is B
In given figures, both the circuits are tightly connected and both the liquids conduct electricity because both the bulbs are glowing. The bulb in the set up P glows more brightly as compared to that of the set up Q might be because of any of the two possibilities:
1. The liquid in Q may have small conductivity.
2. Liquid in P is equivalent to a battery while liquid in Q is equivalent to a cell of the battery of liquid P.