Question

Q19. Do
you know which of the following sentences is in-correct.
a) Cutting of log of wood into pieces is a physical change.
b) Limewater turns milky on passing CO2 through it.
c) Hydrogen gas is produced when acetic acid is added to a solution of a sodium
hydrogen carbonate.
d) Explosion of a firework is a chemical change.​

Answer 1

Answer:

Hello mate,

Explanation:

a) True

b) True

c) True

d) True