kinetic theory of matter and gas laws Generix Content - kinetic theory of matter and gas laws
HOME

EXAMS

JAMB

WAEC

CONTENTS

SIGN IN

JOIN NOW
"kinetic theory of matter and gas laws" question number distribution across years
loading...
Search "kinetic theory of matter and gas laws" on the following sites online
 
Chemistry index on skoool nigeria
 
JAMB questions for "Chemistry :: kinetic theory of matter and gas laws"
Q1

The volume of a given mass of gas is Vcm3 at Pmm Hg. What is the new volume of the gas if the pressure is reduced to half at constant temperature?

A

v/2 cm3

B

V cm3

C

4V cm3

D

2V cm3

E
Q2

The stability of the noble gas is due to the fact that they

A

belong to group zero of the periodic table

B

are volatile in nature

C

have no electron in their outermost shells

D

have droplet or octet electron configurations

E
Q3

A noble gas with a high power of fog penetration used in aerodrome beacons is

A

helium

B

neon

C

krypton

D

argon

E
Q4

0.0075 mole of calcium trioxocarbonate (IV) is added to 0.015 mole of a solution of hydrochloric acid. The volume of gas evolved at s.t.p is 

 

[Molar volume of a gas at s.t.p = 22.4 dm3]

A

224 cm3

B

168 cm3

C

112 cm3

D

100 cm3

E
Q5

A gas exerts pressure on its container because 

A

the molecules of a gas collides with the walls of the container

B

some molecules are moving faster than others

C

of the collisions of the molecules with each other

D

of the mass of the molecules of the gas

E
Q6

The basic assumptions in the kinetic theory of gases that the collisions of the gaseous molecules are perfectly elastic implies that the 

A

forces of attraction and repulsion are in equilibrium

B

gaseous molecules can occupy any available space

C

gaseous molecules will continue their motion indefinitely

D

gases can be compressed

E
Q7

300cm3 of a gas has a pressure of 800 mm Hg. If the pressure is reduced to 650 mm Hg, find its volume 

A

243.75 cm3

B

396.23 cm3

C

738.46 cm3

D

1733.36 cm3

E
Q8

Diffusion is slowest in solid particles than in particles of liquids and gases because

A

solid particles have more kinetic energy than the particles of liquids and gases

B

solid particles have less kinetic energy than the particles of liquids and gases

C

solid particles have less restrictions in their movement, than liquid and gas particles

D

the particles of solids are far apart and the cohesive forces between them are negligible

E
Q9

Which of the following decreases when a mass of gas is compressed to half its initial volume?

A

Average intermoleclar distance

B

Frequency of collisions

C

Number of molecules

D

Atomic radius of each particle

E
Q10

Calculate the mass of chlorine gas which occupies a volume of 1.12 dm3 at s.t.p.

 

[Cl = 35.5, Molar volume of a gas at s.t.p = 22.4 dm3]

A

1.80g

B

3.55g

C

7.10g

D

15.50g

E
Q11

In the industrial production of H2 from natural gas, the CO2 produced along with the H2 is removed by

A

washing under pressure

B

drying over phosphorous (V) oxide

C

passing the mixture into lime water

D

using ammoniacal copper (I) chloride

E
Q12
A dense white fume is formed when ammonia gas reacts with 
A
H2(g)
B
O2(g)
C
HCl(g)
D
Cl2(g)
E
Q13
The density of a certain gas is 1.98 g dm-3 at s.t.p. What is the molecular mass of the gas?   [Molar volume of a gas at s.t.p = 22.4 dm3]
A
26.0 g
B
31.0 g
C
54.0 g
D
44.0 g
E
Q14
According to Charles' law, the volume of a gas becomes zero at
A
-1000C
B
-2730C
C
-3730C
D
00C
E
Q15
It is difficult to achieve an orderly arrangement of the molecules of a gas because they
A
can collide with one another in the container
B
are too small in size
C
have little force of attraction between them
D
have no definite shape
E
Q16
According to the kinetic theory, an increase in temperature causes the kinetic energy of particles to
A
remain constant
B
decrease
C
be zero
D
increase
E
Q17
The weakest attractive force that can be observed between two molecules is 
A
Van der  Waals
B
coordinate covalent 
C
ionic
D
covalent
E
Q18
A gas exerts pressure on its container because
A
the molecules of a gas collide with the walls of the container
B
some of its molecules are moving faster than others
C
of the collision of the molecules with each other.
D
of the mass of the molecules of gas.
E
Q19
A gas X diffuses twice as fast as gas Y under the same conditions. If the relative molecular mass of X is 28, calculate the relative molecular mass of Y.
A
112
B
120
C
56
D
14
E
Q20
Which of the following statements is correct about the average kinetic energy of the molecules of a gas?
A
It increases with increase in pressure
B
It increases with increase in temperature
C
It increases with increase in volume
D
It increases at constant pressure
E
Q21
How long does it take all the solid to melt?
A
6.0 mins
B
3.0 mins
C
2.5 mins
D
1.0 min
E
Q22
If the gas is cooled, at what temperature will it start to condense?
A
175oC
B
2500C
C
1250C
D
1500C
E
Q23
25cm3 of a gas X contains Z molecules at 15oC and 75 mm Hg. How many molecules will 25cm3 of another gas Y contain at the same temperature and pressure?
A
2 Y
B
2 Z
C
Y
D
Z
E
Q24
Water molecules can be ligands especially when they are bonded to
A
alkaline earth metals
B
alkali metals
C
transition metals
D
group VII elements
E
Q25
The fundamental difference between the three states of matter is the 
A
shape of their particles
B
number of particles in each state
C
shape of the container they occupy
D
degree of movement of their particles
E
Q26
In which of the following are water molecules in the most disorderly arrangement?
A
Ice at -10oC
B
Ice at 00C
C
Water at 1000C
D
Steam at 1000C
E
Q27
56.00cm3 of a gas at s.t.p. weighed 0.11g. What is the vapour density of the gas?   [Molar volume of a gas at s.t.p. = 22.4dm3]
A
11.00
B
22.00
C
33.00
D
44.00
E
Q28
A solid begins to melt when
A
constituent particles acquire a greater kinetic energy
B
energy of vibration of articles of the solid is less than the intermolecular forces
C
constituent particles acquire energy above the average kinetic energy
D
energy of vibration of particles of the solid equals the intermolecular forces
E
Q29
The section OP suggests that X is in the
A
liquid state
B
solid / liquid state
C
solid state
D
gaseous state
E
Q30
The temperature of a body decreases when drops of liquid placed on it evaporates because
A
the atmospheric vapour pressure has a cooling effect on the body.
B
a temperature gradient exists between the drops of liquid and the body causing the latter to evaporate.
C
the heat of vapourization is drawn from the body causing it to cool
D
the random motion of the liquid molecules causes a cooling effect on the body
E
Q31
Two cylinders A and B each contains 30 cm3 of oxygen and nitrogen respectively at the same temperature and pressure. If there are 5.0 moles of nitrogen, then the mass of oxygen is
A
3.2 g
B
6.4 g
C
80.0 g
D
160.0 g
E
Q32
A liquid begins to boil when
A
its vapour pressure is equal to the vapour pressure of its solid at the given temperature.
B
molecules start escaping from its surface
C
its vapour pressure equals the atmospheric pressure
D
its volume is slightly increased
E
Q33
Deliquescent substances are also
A
efflorescent
B
anhydrous
C
hygroscopic
D
insoluble
E
Q34
In the industrial production of hydrogen from natural gas, carbon (IV) oxide produced along with the hydrogen is removed by
A
washing under pressure
B
passing the mixture into lime water
C
using ammonical copper (I) chloride
D
drying over phosphorous (V) oxide
E
Q35
At the same temperature and pressure, 50 cm3 of nitrogen gas contains the same number of molecules as
A
25 cm3 of methane
B
40 cm3 of hydrogen
C
50 cm3 ammonia
D
100 cm3 of chlorine
E
Q36
To what temperature must a gas at 273K be heated in order to double both its volume and pressure?
A
298 K
B
546 K
C
819 K
D
1092 K
E
Q37
For a gas, the relative molecular mass is equal to 2Y. What is Y?
A
The mass of the gas
B
The vapour density of the gas
C
The volume of the gas
D
The temperature of the gas
E
Q38
An increase in temperature causes an increase in the pressure of a gas because
A
it decreases the number of collision between the molecules
B
the molecules of the gas bombard the walls of the container more frequently
C
it increases the number of collisions between the molecules
D
it causes the molecules to combine
E
Q39
Which of the curves above represents the behaviour of 1 mole of an ideal gas?
A
l
B
ll
C
lll
D
lV
E
Q40
For iodine crystals to sublime on heating, the molecules must acquire energy that is
A
less than the forces of attraction on the solid
B
equal to the forces of attraction in the solid
C
necessary to melt the solid
D
greater than the forces of attraction in both the solid and the liquid phases.
E
Q41
Argon is used in gas-filled electric lamps because it helps to
A
prevent the reduction of the lamp filaments
B
prevents oxidation of the lamp filaments
C
make the lamp filaments glow brightly
D
keep the atmosphere in the lamp inert
E
Q42
A given mass of gas occupies 2 dm3 at 300 K. At what temperature will its volume be doubled keeping the pressure constant?
A
400 K
B
480 K
C
550 K
D
600 K
E
Q43
Which of the following is a measure of the average kinetic energy of the molecules of a substance?
A
Volume
B
Mass
C
Pressure
D
Temperature
E
Q44
Which of the following gases dissolves in water vapour to produce acid rain during rainfall?
A
Oxygen
B
carbon (II) oxide
C
Nitrogen
D
Sulphur (IV) oxide
E
Q45
The volume occupied by 1.58 g of gas at s.t.p. is 500cm3. What is the relative molecular mass of gas?   [G.M.V at s.t.p. = 22.40 dm3]
A
28
B
32
C
44
D
71
E
Q46
Equal volume of CO, SO2, NO2 and H2S were released into a room at the same point and time. Which of the following gives the order of diffusion of the gases to the opposite corner of the room?   [S = 32, C = 12, O =16, N = 14, H = 1]
A
CO, SO2, NO2, H2S
B
SO2, NO2, H2S, CO
C
CO, H2S, SO2, NO2
D
CO, H2S, NO2, SO2
E
Q47
A basic postulate of the kinetic theory of gases  is that the molecules of a gas move in straight lines between collision. This implies that
A
collisions are perfectly elastic
B
forces of repulsion exist
C
forces of repulsion and attraction are in equilibruim
D
collisions are inelastic
E
Q48
                                     P          Q          R          SProton                      13        16        17        19Electron                   13        16         17       19Neutrons                 14        16         35        20   Which of the four atoms P, Q, R and S in the above data can be described by the following properties: relative atomic mass is greater than 30, but less than 40; it has an odd atomic number and forms a unipositive ion in solution?  
A
P
B
Q
C
R
D
S
E
Q49
What is the partial pressure of hydrogenn gas collected over water at standard atmospheric pressure and 25oC if the saturation vapour pressure of water is 23 mmHg at that temperature?
A
737 mm Hg
B
763 mm Hg
C
777 mm Hg
D
783 mm Hg
E
Q50
Which of the curves in the above graph illustrates the behaviour of an ideal gas?
A
W
B
X
C
Y
D
Z
E
Q51
Which of the gas laws does the above graph illustrates?
A
Boyle
B
Charles
C
Graham
D
gay-Lussac
E
Q52
An increase in temperature causes an increase in the pressure of a gas because there is an increase in the
A
average velocity of the molecules
B
number of collisions between the molecules
C
density of the molecules
D
free mean path between each molecule and the other
E
Q53
Forces holding naphthalene crystals together can be overcome when naphthalene is heated to a temperature of 354 K resulting in the crystals melting. These forces are known as
A
coulombic
B
ionic
C
covalent
D
van der waals
E
Q54
The number of molecules of carbon (IV) oxide produced when 10.0 g of CaCO3 + 2HCl → CaCl2 + H2O + CO2 is   [Ca = 40, O = 16, C = 12, NA = 6.02 x 1023, H = 1, Cl = 35.5]
A
1.00 x 1023
B
6.02 x 1023
C
9.02 x 1023
D
6.02 x 1024
E
Q55
200 cm3 of oxygen diffuses through a porous plug in 50 seconds. How long will 80 cm3 of methane (CH4) take to diffuse through the same porous plug under the same conditions?   [C = 12, O = 16, H = 1]
A
40 sec
B
20 sec
C
14 sec
D
7 sec
E
Q56
When steam is passed through red hot carbon which of the following are produced?
A
Hydrogen,oxygen and carbon (IV) oxide
B
Hydrogen and carbon (IV) oxide
C
Hydrogen and carbon (II) oxide
D
Hydrogen and trioxocarbonate (IV) acid
E
Q57
Which of the following will react further with oxygen to form a higher oxide?
A
NO and H2O
B
CO and CO2
C
SO2 and NO
D
CO2 and H2O
E
Q58
A substance Z reacts with NaOH to give salt and water only. When Z is treated with dilute HCl, a gas is evolved which gives a yellow suspension on passing into concentrated H2SO4 Substance Z is
A
NaHS
B
Na2SO3
C
Na2S
D
NaHSO3
E
Q59
Ammonia gas is normally dried with
A
concentrated sulphuric acid
B
quicklime
C
anhydrous carbon chloride
D
magnesium sulphate
E
Q60
Figure 1 above shows part of the peridic table. Which of the following elements belongs to the p block?
A
S, T and U
B
V, W and X
C
S and T only
D
P, Q and R
E
V, W, X and S