Answer:
The correct answer is solid B.
Explanation:
Strong electrolyte allows easy passage of current through their aqueous solution. This is because strong electrolyte completely dissociates into their aqueous solution which helps in transportation of an electric current.
Where as weak electrolyte do not allow electric current pass through their aqueous solution easily this is due their incomplete dissociation of their ions.
According to question, the weak electrolyte is the Solid B. This because after the closing the bulb glow with dim light which means that solution do not allowed easy passage of electric current through it which indicates that solid B is weak electrolyte when dissolved in water..
