Question types

Study of Gas Laws question types

80 questions across 7 question groups — pick any mix to generate a CHEMISTRY paper with step-by-step answer keys.

80
Questions
7
Question groups
5
Question types
Sample Questions

Study of Gas Laws questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
If the pressure is doubled for a fixed mass of a gas, its volume will become
  • A
    $4$ times
  • $1 / 2$ times
  • C
    $2$ times
  • D
    No change

Answer: B.

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Q 2MCQ1 Mark
The volume$-$temperature relationship is given by
  • A
    Boyle
  • B
    Gay$-$Lussac
  • C
    Dalton
  • Charles

Answer: D.

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Q 3MCQ1 Mark
The absolute temperature value that corresponds to $27^\circ C$ is
  • A
    $200 K$
  • $300 K$
  • C
    $400 K$
  • D
    $246 K$

Answer: B.

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Q 4MCQ1 Mark
The graph of PV vs P for gas is
  • A
    Parabolic
  • B
    Hyperbolic
  • A straight line parallel to the X-axis
  • D
    A straight line passing through the origin

Answer: C.

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The molecular theory states that the pressure exerted by a gas in a closed vessel results from the gas molecules striking against the walls of the vessel. How will the pressure change if
  1. The temperature is doubled keeping the volume constant
  2. The volume is made half of its original value keeping the T constant
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During the practical session in the lab when hydrogen sulphide gas having offensive odour is prepared for some test, we can smell the gas even 50 metres away. Explain the phenomenon.
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A steel cylinder of internal volume 20 litres is filled with hydrogen at 29 atmospheric pressure. If hydrogen is used to fill a balloon at 1.25 atmospheric pressure at the same temperature, what volume will the gas occupy?
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$88 cm^3$ of nitrogen is at a pressure of 770 mm mercury. If the pressure is raised to 880 mmHg , find by how much the volume will diminish, the temperature remaining constant.
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An LPG cylinder can withstand a pressure of 14.9 atmospheres. The pressure gauge of the cylinder indicates 12 atmospheres at 27°C. Because of a sudden fire in the building, the temperature rises. At what temperature will the cylinder explode?
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Calculate the volume of dry air at STP that occupies $28 cm^3$ at $14^{\circ} C$ and $750$ mmHg pressure when saturated with water vapour. The vapour pressure of water at $14^{\circ} C$ is $12$ mmHg .
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$50 cm^3$ of hydrogen is collected over water at $17^\circC$ and $750$ mmHgpressure. Calculate the volume of a dry gas at $STP$. The water vapour pressure at $17^\circC$ is $14$ mmHg.
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A cylinder of 20 liters capacity contains gas at 100 atmospheric pressure. How many flasks of $200 cm^3$ capacity can be filled from it at 1-atmosphere pressure, temperature remaining constant?
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 $800 cm^3$ of gas is collected at 650 mm pressure. At what pressure would the volume of the gas reduce by $40 \%$ of its original volume, the temperature remaining constant?
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At constant temperature, the effect of change of pressure on the volume of a gas was as given below:
Pressure in atmosphere Volume in liters
$0.20$ $112$
$0.25$ $89.2$
$0.40$ $56.25$
$0.60$ $37.40$
$0.80$ $28.10$
$1.00$ $22.4$
(a) Plot the following graphs
  1. $P$ vs $V$
  2. $P$ vs $1/V$
  3. $PV$ vs $P$
Interpret each graph in terms of the law.
(b) Assuming that the pressure values given above are correct, find the correct measurement of the volume.
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Match the following:
  Column A Column B
(a) $cm^3$ (i) Pressure
(b) Kelvin (ii) Temperature
(c) Torr (iii) Volume
(d) Boyle's law (iv) $\frac{ PV }{ T }=\frac{ P _1 V _1}{ T _1}$
    (v) $P V=P_1 V_1$
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