Question

to
know
me
Changes
7
Chemical
Reversible
Irreversible
Physical
t
0000
Let's Revise
Scan me to check your
understanding
1.
a.
C.
A. Choose the correct answer.
Which of the following changes is a reversible change?
Freezing of water
b. Burning of paper
c. Breaking of glass
d. Sharpening of pencil
2. Chopping of an onion is:
a. Physical change only
b. Chemical change only
Chemical and reversible change d. Physical and irreversible change
3. A wooden wheel is 100 cm in diameter. What should be the size of the metal rim
so that it fits firmly over it?
a. 100 cm
b. 95 cm
c. 110 cm
d. 105 cm
4. A physical change:
a. is always reversible.
b. is always irreversible.
c. may be reversible or irreversible. d. none of the above​

Answer 1

Answer:

are u asking ur exams quschn

Answer 2

Answer:

you are giving exam am i rightate