Question

IUXIUS
C.
Q. 5.
a.
Hydrogen uiuxiue
le . UdUnUIUXIU
Impure copper sulphate can be purified by
the process of
i. galvenisation ii. Crystallization
iii. evaporation
iv. Sublimation
d.
Which of the following is a chemical
change
i. Lifting a chair
ii. Inflating balloon
ii. Cooking rice iv. Bursting a balloon
e.
Which of the following change can be
reversed?
i. Water changing into ice
ing rusty
b.
C.
n​

Answer 1

Answer:

cooking rice and lifting a chair is the correct answer of your question