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Objective Questions
GS
GS Set-1
Chemistry
Physical Chemistry
158

Physical Chemistry MCQ with Answers

158) 1 mol of Ne and 1 mol of N₂ are placed in a container. Indicate the incorrect statement about this system:

Molecules of the two gases strike the wall of the container with same frequency

Molecules of Ne strike the wall more frequently

Both gases exert same pressure

N₂ has an average molecular speed

Answer is:

Molecules of the two gases strike the wall of the container with same frequency

Explanation:

The two gases have different velocities, therefore frequency of striking the wall will be different

Physical Chemistry MCQ with Answers

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159) Two containers of same volume containing 1 mol of O₂ and H₂, having V_rms of H₂ 2 times than that of O₂. If the two containers are connected, what will be the ratio of rate of diffusion of O₂ to H₂?

4:01

2:01

16:01

1:01

Answer is:

0.042361111

160) Which of the following value of R is incorrect?

2 cal⁄K mol

7.189 x 10¹⁹ eV⁄K mol

8.314 J⁄K mol

0.0821 L atm⁄mol K

Answer is:

7.189 x 10¹⁹ eV⁄K mol

161) In a vessel, CO₂ is present at a total pressure of 0.5 atm. Some graphite is added to the vessel and it is found that the equilibrium pressure is 0.8 atm, the K_p value will be:

8⁄5 atm

6.4⁄5 atm

1.8 atm

1.2 atm

Answer is:

1.8 atm

162) A 2 litre flask containing NH₃ at atm is connected to a 3 litre flask containing HCl at 3 atm through a narrow tube. What is the final total pressure if T is constant?

1 atm

2.5 atm

5⁄3 atm

Answer is:

1 atm

Physical Chemistry MCQ with Answers

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158) 1 mol of Ne and 1 mol of N2 are placed in a container. Indicate the incorrect statement about this system:

Molecules of the two gases strike the wall of the container with same frequency

Physical Chemistry MCQ with Answers

Related Physical Chemistry MCQ with Answers

159) Two containers of same volume containing 1 mol of O2 and H2, having Vrms of H2 2 times than that of O2. If the two containers are connected, what will be the ratio of rate of diffusion of O2 to H2?

0.042361111

160) Which of the following value of R is incorrect?

7.189 x 1019 eV⁄K mol

161) In a vessel, CO2 is present at a total pressure of 0.5 atm. Some graphite is added to the vessel and it is found that the equilibrium pressure is 0.8 atm, the Kp value will be:

1.8 atm

162) A 2 litre flask containing NH3 at atm is connected to a 3 litre flask containing HCl at 3 atm through a narrow tube. What is the final total pressure if T is constant?

1 atm

Physical Chemistry MCQ with Answers

158) 1 mol of Ne and 1 mol of N₂ are placed in a container. Indicate the incorrect statement about this system:

159) Two containers of same volume containing 1 mol of O₂ and H₂, having V_rms of H₂ 2 times than that of O₂. If the two containers are connected, what will be the ratio of rate of diffusion of O₂ to H₂?

7.189 x 10¹⁹ eV⁄K mol

161) In a vessel, CO₂ is present at a total pressure of 0.5 atm. Some graphite is added to the vessel and it is found that the equilibrium pressure is 0.8 atm, the K_p value will be:

162) A 2 litre flask containing NH₃ at atm is connected to a 3 litre flask containing HCl at 3 atm through a narrow tube. What is the final total pressure if T is constant?