Question

b) Write T for true and F for false :
i) A chemical change is always irreversible.
ii) Molecules can move very easily in solids.
iii) The rate of sedimentation is decreased by loading.i
v) copper is represented by the symbol v) Proton has one unit of negative charge.
vi)Cathode rays are stream of protons.vii) All inert elements are gases.
viii) Alpha particle is doubly charged particle.
ix) Elements with valency 4 are called bivalent.
.x) Valency can be expressed in fractions.​

Answer 1

Answer:

1.T 2.F T F T F T F

Explanation:

Mark as be brilliant

Answer 2

Answer:

1》T

2》F

3》T

4》T

5》F

6》F

7》T

8》T

9》T

10》T

11》F