Select Chapter Topics:
Q. No.The ratio of temperature in \(\mathrm{K}\) of hydrogen and oxygen is \(2:1\). The ratio of their average kinetic energy per molecule is:
1. \(6:1\)
2. \(1:6\)
3. \(2:1\)
4. \(1: 2\)
Subtopic: Kinetic Energy of an Ideal Gas |
86%
From NCERT
JEE
Please attempt this question first.
Hints
Please attempt this question first.
The ratio of density of oxygen (\(O_{8}^{16}\)) to the density of Helium(\(He_{2}^{4}\)) at STP is equal to:
1. 2
2. 4
3. 6
4. 8
1. 2
2. 4
3. 6
4. 8
Subtopic: Ideal Gas Equation |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
If \(T\) is the temperature of a gas, then RMS velocity of the gas molecules is proportional to:
1. \(T^{\frac{1}{2}}\)
2. \(T^{-\frac{1}{2}}\)
3. \(T\)
4. \(T^2\)
1. \(T^{\frac{1}{2}}\)
2. \(T^{-\frac{1}{2}}\)
3. \(T\)
4. \(T^2\)
Subtopic: Types of Velocities |
87%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
In a lake of depth \(40~\text{m}\) a bubble is at the bottom. Assuming the temperature and density of lake water to be uniform. What will be the density of air in the bubble?
(assume temperature \(T=12^\circ \text{C}\) and density water \(=10^3~\text{kg/m}^3,\) molecular weight of water = \(30~\text{g}\))
1. \(16.76~\text{kg/m}^3\)
2. \(15.32~\text{kg/m}^3\)
3. \(6.33~\text{kg/m}^3 \)
4. \(45.94~\text{kg/m}^3\)
(assume temperature \(T=12^\circ \text{C}\) and density water \(=10^3~\text{kg/m}^3,\) molecular weight of water = \(30~\text{g}\))
1. \(16.76~\text{kg/m}^3\)
2. \(15.32~\text{kg/m}^3\)
3. \(6.33~\text{kg/m}^3 \)
4. \(45.94~\text{kg/m}^3\)
Subtopic: Ideal Gas Equation |
67%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
What would be the ratio of the root mean square speed of oxygen gas molecules to that of hydrogen gas molecules, if the temperature of both the gases are the same?
| 1. | \(1:4\) | 2. | \(1:16\) |
| 3. | \(1:32\) | 4. | \(1:8\) |
Subtopic: Types of Velocities |
80%
From NCERT
JEE
Please attempt this question first.
Hints
Please attempt this question first.
The average speed of N2 at \(27^\circ \mathrm{C}\) is:
1. 476 m/s
2. 470 m/s
3. 480 m/s
4. 490 m/s
1. 476 m/s
2. 470 m/s
3. 480 m/s
4. 490 m/s
Subtopic: Types of Velocities |
50%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
In a mixture, \(0.5\) moles of \(\mathrm{O_2}\) and \(4\) moles of \(\mathrm{Ne}\) gas are taken at temperature \(T\). The internal energy of the system is equal to:
1. \(\left ( \frac{13}{2} \right )RT\)
2. \(\left ( \frac{11}{4} \right )RT\)
3. \(\left ( \frac{29}{4} \right )RT\)
4. \(\left ( \frac{13}{4} \right )RT\)
1. \(\left ( \frac{13}{2} \right )RT\)
2. \(\left ( \frac{11}{4} \right )RT\)
3. \(\left ( \frac{29}{4} \right )RT\)
4. \(\left ( \frac{13}{4} \right )RT\)
Subtopic: Law of Equipartition of Energy |
79%
From NCERT
JEE
Please attempt this question first.
Hints
Please attempt this question first.
The correct order of root mean square speed, \(v_\mathrm{{rms}}\) for \(\mathrm{Ne , Cl_2}\) and \(\mathrm{OF_6}\) at the same temperature is:
1. \(\left(v_{\mathrm{rms}}\right)_{\mathrm{Ne}}<\left(v_{\mathrm{rms}}\right)_{\mathrm{Cl}_2}<\left(v_{\mathrm{rms}}\right)_{\mathrm{OF}_6} \)
2. \(\left(v_{\mathrm {rms }}\right)_{\mathrm{Cl}_2}<\left(v_{\mathrm{rms}}\right)_{\mathrm{Ne}}<\left(v_{\mathrm{rms}}\right)_{\mathrm{OF}_6} \)
3. \(\left(v_{\mathrm {rms }}\right)_{\mathrm{OF}_{\mathrm{6}}}<\left(v_{\mathrm{rms}}\right)_{\mathrm{Cl}_2}<\left(v_{\mathrm{rms}}\right)_{\mathrm{Ne}} \)
4. \(\left(v_{\mathrm{rms}}\right)_{\mathrm{OF}_6}<\left(v_{\mathrm{rms}}\right)_{\mathrm{Ne}}<\left(v_{\mathrm{rms}}\right)_{\mathrm{Cl}_2}\)
1. \(\left(v_{\mathrm{rms}}\right)_{\mathrm{Ne}}<\left(v_{\mathrm{rms}}\right)_{\mathrm{Cl}_2}<\left(v_{\mathrm{rms}}\right)_{\mathrm{OF}_6} \)
2. \(\left(v_{\mathrm {rms }}\right)_{\mathrm{Cl}_2}<\left(v_{\mathrm{rms}}\right)_{\mathrm{Ne}}<\left(v_{\mathrm{rms}}\right)_{\mathrm{OF}_6} \)
3. \(\left(v_{\mathrm {rms }}\right)_{\mathrm{OF}_{\mathrm{6}}}<\left(v_{\mathrm{rms}}\right)_{\mathrm{Cl}_2}<\left(v_{\mathrm{rms}}\right)_{\mathrm{Ne}} \)
4. \(\left(v_{\mathrm{rms}}\right)_{\mathrm{OF}_6}<\left(v_{\mathrm{rms}}\right)_{\mathrm{Ne}}<\left(v_{\mathrm{rms}}\right)_{\mathrm{Cl}_2}\)
Subtopic: Types of Velocities |
81%
JEE
Please attempt this question first.
Hints
Please attempt this question first.
What is the molar-specific heat capacity of a diatomic gas in an isochoric process if it has an additional vibrational mode?
\(\begin{align} & {{1}{.}\;\frac{5}{2}{R}}\\ & {{2}{.}\;\frac{3}{2}{R}}\\ & {{3}{.}\;\frac{7}{2}{R}}\\ & {{4}{.}\;\frac{9}{2}{R}} \end{align} \)
\(\begin{align} & {{1}{.}\;\frac{5}{2}{R}}\\ & {{2}{.}\;\frac{3}{2}{R}}\\ & {{3}{.}\;\frac{7}{2}{R}}\\ & {{4}{.}\;\frac{9}{2}{R}} \end{align} \)
Subtopic: Law of Equipartition of Energy |
70%
From NCERT
JEE
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
What will be the effect on the root mean square velocity of oxygen molecules if the temperature is doubled and the oxygen molecule dissociates into atomic oxygen?
| 1. | The velocity of atomic oxygen remains the same. |
| 2. | The velocity of atomic oxygen doubles. |
| 3. | The velocity of atomic oxygen becomes half. |
| 4. | The velocity of atomic oxygen becomes four times. |
Subtopic: Types of Velocities |
77%
From NCERT
JEE
Please attempt this question first.
Hints
Please attempt this question first.
Select Chapter Topics:
© 2025 GoodEd Technologies Pvt. Ltd.