Which of the aforementioned phenomena can be reversed?
A. Water fall.
B. Charging of a battery.
C. Rusting of iron by chemical change.
D. Production of heat by rubbing of hands.
Answer:B
Which of the aforementioned phenomena can be reversed?
A. Water fall. B. Charging of a battery. C. Rusting of iron by chemical change. D. Production of heat by rubbing of hands.