States of Matter MCQs | Question – Paper 1


Topic: States of Matter - Gases and Liquids, Test No.: 01, Total MCQs: 10

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Question 1
Maximum deviation from ideal gas is expected from [NEET 2013]
A
H2(g)
B
N2(g)
C
CH4(g)
D
NH3(g)
Question 2
If a gas expands at constant temperature, it indicates that:
A
Number of the molecules of gas increases
B
Kinetic energy of molecules decreases
C
Pressure of the gas increases
D
Kinetic energy of molecules remains the same
Question 3
In a flask of ‘V’ litres, 0.2 moles of O2, 0.4 moles of N2, 0.1 moles of NH3 and 0.3 moles of He gases are present at 27°C. If total pressure exerted by these non-reacting gases is 1 atm, the partial pressure exerted by N2 gas is
A
0.4 atm
B
0.3 atm
C
0.2 atm
D
0.1 atm
Question 4
In order to increase the volume of a gas by 10%, the pressure of the gas should be
A
increased by 10%
B
increased by 1%
C
decreased by 10%
D
decreased by 1%
Question 5
In which one of the following, does the given amount of chlorine exert the least pressure in a vessel of capacity 1 dm3 at 273K?
A
0.071 g
B
0.0355 g
C
0.02 mole
D
6.023 × 1021 molecules
Question 6
One mole of oxygen at 273 k and one mole of sulphur dioxide at 546 k are taken in two separate containers, then,
A
kinetic energy of O2 > kinetic energy of SO2 .
B
kinetic energy of O2 < kinetic energy of SO2.
C
kinetic energy of both are equal.
D
None of these
Question 7
If 10–4 dm3 of water is introduced into a 1.0 dm3 flask at 300 K, how many moles of water are in the vapour phase when equilibrium is established?
(Given : Vapour pressure of H2O at 300 K is 3170 Pa; R = 8.314 J K–1 mol–1)
A
1.27 × 10–3 mol
B
5.56 × 10–3 mol
C
1.53 × 10–2 mol
D
4.46 × 10–2 mol
Question 8
In the equation of state of an ideal gas PV = n RT, the value of the universal gas constant would depend only on
A
the nature of the gas
B
the pressure of the gas
C
the units of the measurement
D
None of the above
Question 9
In two vessels of 1 L each at the same temperature 1 g of H2 and 1 g of CH4 are taken, for these
A
Vrms values will be same
B
kinetic energy per/mol will be same
C
total kinetic energy will same
D
pressure will be same
Question 10
Which one of the following statements is NOT true about the effect of an increase in temperature on the distribution of molecular speeds in a gas?
A
The most probable speed increases
B
The fraction of the molecules with the most probable speed increases
C
The distribution becomes broader
D
The area under the distribution curve remains the same as under the lower temperature
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