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Physics 9 Chapter 7 - Properties of Matter - 7
1.
Which of the following gets separated in plasma state in the presence of electric fields?
a) (a) Both b and c
b) (d) Neutrons
c) (b) Positive ions
d) (c) Electrons
2.
Which of the following gets separated in plasma state in the presence of magnetic fields?
a) (d) Neutrons
b) (b) Positive ions
c) (c) Electrons
d) (a) Both b and c
3.
Which of the following exists in fluorescent tubes when they glow?
a) Liquid
b) Gas
c) Solid
d) Plasma
4.
In which of the following state, most of the matter of this universe occurs?
a) Plasma
b) Solid
c) Liquid
d) Gas
5.
In which of the following state, gases exist in sun?
a) Molecular state
b) Compound state
c) Atomic state
d) Ionic state
6.
If we take equal volumes of iron and wood, then which of them is heavier than the other?
a) Wood
b) Iron
c) Both are light
d) Both are heavy
7.
What is the density of air?
a) 13.600 kgm
-3
b) 1.3 kgm
-3
c) 9.20 kgm
-3
d) 123.32kgm
-3
8.
What is the ratio of a mass to volume of a substance called?
a) Elasticity
b) Density
c) Temperature
d) Pressure
9.
What is the density of foam?
a) 89 kgm
-3
b) 9.20 kgm
-3
c) 13.600 kgm
-3
d) 123.32kgm
-3
10.
Which of the following state of matter is highly conducting state of matter?
a) Plasma
b) Solid
c) Liquid
d) Gas
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