The correct option for the total pressure (in atm) in a mixture of 4 g O2 and 2 g H2 confined in a total volume of one liter at 0°C is :
[Given R=0.082 L atm mol-1 K-1, T=273 K]

1. 25.18

2. 26.02

3. 2.518

3. 2.602

Subtopic:  Ideal Gas Law |
 62%
From NCERT
NEET - 2021
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NEET 2023 - Target Batch - Aryan Raj Singh
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Choose the correct option for graphical representation of Boyle's law, which shows a graph of pressure vs. volume of a gas at different temperatures:

1.
2.
3.
4.
Subtopic:  Gas Laws |
 75%
From NCERT
NEET - 2021
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The minimum pressure required to compress 600 dm3 of a gas at 1 bar to 150 dm3 at 40°C is

1. 4.0 bar

2. 0.2 bar

3. 1.0 bar

4. 2.5 bar

Subtopic:  Gas Laws |
 76%
From NCERT
NEET - 2020
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Which one is not the correct mathematical equation for Dalton's Law of partial pressure?
(Here p = total pressure of a gaseous mixture)
 
1. \(p_i=\chi_ip^o_i,\) where \(\chi_i=\) mole fraction of \(i^\text{th}\) gas in a gaseous mixture
   \(p_{i}^{o}=\) pressure of \(i^\text{th}\) gas in a pure state
2. \(\mathrm{p}=\mathrm{p}_{1}+\mathrm{p}_{2}+\mathrm{p}_{3} \)
3. \(\mathrm{p}=\mathrm{n}_{1} \frac{\mathrm{RT}}{\mathrm{V}}+\mathrm{n}_{2} \frac{\mathrm{RT}}{\mathrm{V}}+\mathrm{n}_{3} \frac{\mathrm{RT}}{\mathrm{V}}\)
4. \(\mathrm{p}_{i}=\chi_{i} \mathrm{p} \), where \(\mathrm{p}_{i}=\) partial pressure of \(i^\text{th}\) gas
    \(\chi_i=\) mole fraction of \(i^\text{th}\) gas in a gaseous mixture
Subtopic:  Dalton's Law |
 59%
From NCERT
NEET - 2022
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A 10.0 L flask contains 64 g of oxygen at 27°C. (Assume \(O_2\) gas is behaving ideally). The pressure inside the flask in the bar is:
(Given R = 0.0831 L bar K-1 mol-1)
1. 4.9 
2. 2.5 
3. 498.6
4. 49.8
Subtopic:  Ideal Gas Law |
 72%
From NCERT
NEET - 2022
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Which of the following is not correct about postulates of the kinetic molecular theory of gases?

1 .   Pressure of the gas is due to the collision of molecules against the walls of the container.
2. Volume of the gas is due to the large number of molecules of the gas.
3.  Average kinetic energy of molecules is directly proportional to the absolute temperature of the gas.
4.  The molecules move randomly with different speeds in different directions.

Subtopic:  Kinetic Theory of Gas |
 70%
From NCERT
NEET - 2022
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At 300 K, 250 mL of gas A at 1 bar pressure is mixed with 500 mL of a gas B at 2 Bar pressure in a 1.0 L flask. Gas A does not react with gas B. The final pressure of the mixture is-
1. 1.00 bar 
2. 2.15 bar 
3. 2.50 bar 
4. 1.25 bar 

Subtopic:  Dalton's Law |
 65%
From NCERT
NEET - 2022
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Four gas cylinders containing He, N2, CO2, and NH3 gases, separately, are gradually cooled from a temperature of 500 K. Which gas will liquify first?

(Given TC in K – He : 5.3, N2 : 126, CO2 : 304.1 and NH3 : 405.5)

1. He
2. N2
3. CO2
4. NH3
Subtopic:  Liquefaction of Gases & Liquid |
 76%
From NCERT
NEET - 2022
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A vessel contains 3.2 g of dioxygen gas at STP (273.15 K and 1 atm pressure). The gas is now transferred to another vessel at a constant temperature, where pressure becomes one-third of the original pressure. The volume of the new vessel in L is:
(Given - molar volume at STP is 22.4 L)
1.  6.72
2.  2.24
3.  22.4
4.  67.2
Subtopic:  Gas Laws |
 51%
From NCERT
NEET - 2022
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Intermolecular forces are forces of attraction and repulsion between interacting particles that will be: 
A. dipole - dipole forces 
B. dipole-induced dipole forces 
C. hydrogen bonding 
D. covalent bonding 
E. dispersion forces 
Choose the most appropriate answer from the options given below: 
1. A, C, D, E are correct 
2. B, C, D, E are correct 
3. A, B, C, D, E are correct 
4. A, B, C, E are correct 
Subtopic:  Introduction to States of Matter |
From NCERT
NEET - 2023
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