States of Matter MCQs | Question – Paper 5

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Topic: States of Matter - Gases and Liquids, Test No.: 05, Total MCQs: 10

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Question 1
What is the ratio of kinetic energies of 3g of hydrogen and 4 gms of oxygen at T(K)?
A
12 : 1
B
6 : 1
C
1 : 6
D
24 : 1
Question 2
What is the temperature at which the kinetic energy of 0.3 moles of Helium is equal to the kinetic energy of 0.3 moles of Helium is equal to the kinetic energy of 0.4 moles of Argon at 400 K?
A
400 K
B
873 K
C
533 K
D
300 K
Question 3
What is the value of gas constant? R.in Jmol–1 K–1
A
82.1
B
8.314 × 102
C
8.314
D
0.0821
Question 4
What volume of oxygen gas (O2) measured at 0°C and 1 atm, is needed to burn completely 1 litre of propane gas (C3H8) measured under the same conditions?
A
10 L
B
7 L
C
6 L
D
5 L
Question 5
The volume of 10 moles of an ideal gas is 1 litre at and 1 atm Pressure. What is the volume (in lit) of 20 moles of same gas at same temperature and pressure?
A
1
B
2
C
4
D
8
Question 6
To an evacuated vessel with movable piston under external pressure of 1 atm., 0.1 mol of He and 1.0 mol of an unknown compound (vapour pressure 0.68 atm. at 0°C) are introduced. Considering the ideal gas behaviour, the total volume (in litre) of the gases at 0°C is close to
A
7
B
9
C
13
D
15
Question 7
What are the conditions under which the relation between volume (V) and number of moles (n) gas plotted? (P = pressure; T= temperature)
A
Constant P and T
B
Constant T and V
C
Constant P and V
D
Constant n and V
Question 8
What is the dominant intermolecular force or bond that must be overcome in converting liquid CH3OH to a gas?
A
London dispersion force
B
Hydrogen bonding
C
Dipole-dipole interaction
D
Covalent bonds
Question 9
When r, P and M represent rate of diffusion, pressure and molecular mass, respectively, then the ratio of the rates of diffusion (rA/rB) of two gases A and B, is given as
A
(PA/PB) (MA/MB)1/2
B
(PA/PB)1/2 (MA/MB)
C
(PA/PB) (MB/MA)1/2
D
(PA/PB)1/2 (MB/MA)
Question 10
Which of the given sets of temperature and pressure will cause a gas to exhibit the greatest deviation from ideal gas behaviour?
A
100°C and 4 atm
B
100°C and 2 atm
C
–100°C and 4 atm
D
0°C and 2 atm
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