The fraction of molecular volume to the actual volume occupied by oxygen gas at STP is: (Take the diameter of an oxygen molecule to be 3 Å).
1. 4 × 10−4
2. 5 × 10−4
3. 3 × 10−4
4. 1 × 10−4

Subtopic:  Ideal Gas Equation |
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NEET 2023 - Target Batch - Aryan Raj Singh
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Molar volume is the volume occupied by 1 mol of any (ideal) gas at standard temperature and pressure is:
(STP: $$1$$ atmospheric pressure, $$0~^\circ \text{C}$$)
1. $$0$$
2. $$22.4$$ litres
3. $$11.2$$ litres
4. $$1$$ litres

Subtopic:  Ideal Gas Equation |
87%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

The figure shows a plot of $$\frac{PV}{T}$$ versus $$P$$ for $$1.00\times10^{-3}$$ kg of oxygen gas at two different temperatures.

Then relation between $$T_1$$ and $$T_2$$ is:
1. $$T_1=T_2$$
2. $$T_1<T_2$$
3. $$T_1>T_2$$
4. $$T_1 \geq T_2$$


Subtopic:  Ideal Gas Equation |
61%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

The figure shows a plot of PV/T versus for  of oxygen gas at two different temperatures.

The value of PV/T where the curves meet on the y-axis is:

Subtopic:  Ideal Gas Equation |
58%
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NEET 2023 - Target Batch - Aryan Raj Singh

An oxygen cylinder of volume 30 litres has an initial gauge pressure of 15 atm and a temperature of 27 °C. After some oxygen is withdrawn from the cylinder, the gauge pressure drops to 11 atm, and its temperature drops to 17 °C. The mass of oxygen taken out of the cylinder is:

1. 0.14 kg
2. 0.16 kg
3. 0.18 kg
4. 0.21 kg

Subtopic:  Ideal Gas Equation |
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NEET 2023 - Target Batch - Aryan Raj Singh
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An air bubble of volume 1.0 $c{m}^{3}$ rises from the bottom of a lake 40 m deep at a temperature of 12 °C. To what volume does it grow when it reaches the surface, which is at a temperature of 35 °C?
1. 5.3 cm3
2. 4.0 cm3
3. 3.7 cm3
4. 4.9 cm3

Subtopic:  Ideal Gas Equation |
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NEET 2023 - Target Batch - Aryan Raj Singh
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What is the total number of air molecules (inclusive of oxygen, nitrogen, water vapor, and other constituents) in a room of capacity $$25.0$$ mat a temperature of $$27^\circ \mathrm C$$ and $$1$$ atm pressure?

 1 $$6.1\times10^{23}$$ molecules 2 $$6.1\times10^{26}$$ molecules 3 $$7.1\times10^{23}$$ molecules 4 $$7.1\times10^{26}$$ molecules

$\begin{array}{l}\end{array}$

Subtopic:  Ideal Gas Equation |
60%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

What is the average thermal energy of a helium atom at room temperature ($$27^{\circ}\mathrm{C}$$)?

 1 $$11 . 21 \times 10^{- 20} \text{J}$$ 2 $$3 . 09 \times 10^{- 16} \text{J}$$ 3 $$6 . 21 \times 10^{- 21} \text{J}$$ 4 $$5 . 97 \times 10^{- 19} \text{J}$$
Subtopic:  Law of Equipartition of Energy |
64%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

At what temperature is the root mean square speed of an atom in an argon gas cylinder equal to the rms speed of a helium gas atom at $$-20^\circ \mathrm{C}?$$
(Given the atomic mass of $$\text{Ar}=39.9~\text{u}$$ and of $$\text{He}=4.0~\text{u}$$).
1. $$1.01 \times 10^3 ~\text{K}$$
2. $$3.15 \times 10^3 ~\text{K}$$
3. $$1.91 \times 10^3~ \text{K}$$
4. $$2.52 \times 10^3 ~\mathrm{K}$$

Subtopic:  Types of Velocities |
74%
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NEET 2023 - Target Batch - Aryan Raj Singh

From a certain apparatus, the diffusion rate of hydrogen has an average value of 28.7 . The diffusion of another gas under the same conditions is measured to have an average rate of 7.2 . The unknown gas is:
1. Oxygen
2. Nitrogen
3. Helium
4. None of these

Subtopic:  Types of Velocities |
60%
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