Question

Mark the incorrect statement.
A) Melting of wax is a physical change while burning of wax in a candle is a chemical change.
B) Metals expand on heating while contract on cooling. Both are physical changes.
C) Composition of matter changes during a chemical change while it remains same during a physical change.
D) High and low tides in sea are the examples of non-periodic changes while growth of a tree is a periodic change

Answer 1

Answer:

d is incorrect

Explanation:

because in high and low tides in sea the tides are not same as the troughs and crust lengths are not same while in growth of tree is non periodic because it's only rising and not falling.