Question

39. In which of the following cases of liquids
does the bulb glow upon closing the
switch?
A) Glucose solution
B) Lemon juice
C) Distilled water
D)Oil​

Answer 1

Answer:-

Option B) Lemon juice✓

Reason - Presence of citric acid.

Hope it helps you..........

Answer 2

Answer:

B) Lemon Juice

Explanation:

Lemon Juice is a electro chemical solution.

It consists Citrate ion and hydrogen ion.

So, it can produce electrons to glow the light.