Chemistry 11
Chapter 3 Gases
Test 11
1.
Mole fraction has?
a) Units
b) None of these
c) No units
d) Mol-1
2.
The partial pressure of oxygen in the air is?
a) 157 torr
b) 159 torr
c) 158 torr
d) 160 torr
3.
One dm
3
O
2
at STP weighs approximately?
a) 1.4384 g
b) None of these
c) 3.4384 g
d) 2.4384 g
4.
The sum of mole fraction is always equal to ______?
a) Total fraction
b) Unity
c) None of these
d) Individual fraction
5.
In sea after every 100 feet depth ,the diver experiences approximately ______ pressure?
a) 5 atm
b) 4 atm
c) 2 atm
d) 3 atm
6.
The partial pressure of oxygen in the lungs is?
a) 115 torr
b) 117 torr
c) 116 torr
d) 114 torr
7.
The total pressure is the result of total number of ______ per unit area in a given time?
a) Elastic collisions
b) Collisions
c) Pressure
d) Particles
8.
The total pressure exerted by a mixture of non-reacting gases is equal to equal to sum of their ________ partial pressure?
a) Different
b) individual
c) same
d) equal
9.
One molecules is approximately at a distance of ______ times its own diameter from its neighbor at room temperature?
a) 100
b) 300
c) 200
d) 400
10.
The pressure exerted by the water vapours is called?
a) Net tension
b) Tension
c) Aqueous tension
d) None of these
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