Question

Q19.
Do
you
know
which
of
the
following
sentences
is
in
a)
Cutting
of
log
of
wood
into
pieces
is
a

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.
Do
you
know
which
of
the
following
sentences
is
in-correct.

Cutting
of
log
of
wood
into
pieces
is
a
physical
change.

b)
Limewater
turns
milky
on
passing
CO2
through
it.

produced
when
acetic
acid
is
added
to
a
solution
of
a
sodium

hydrogen
carbonate.

Explosion
of
a
firework
is
a
chemical
change.

produced
when
acetic
acid
is
added
to
a
solution
of
a
sodiumï​

Answer 1

Do you know which of the following sentences is in a) Cutting of log of wood into pieces is a 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.​. 1.

1 answer

 ·  0 votes: Answer:a) physicalb) chemicalc) chemicald) chemical

Answer 2

Answer:

Option C is incorrect.

Explanation:

When acetic acid is added to sodium hydrogen carbonate CO2 is released.