Four particles have speed 2, 3, 4 and 5 cm/s respectively. Their rms speed is:

1.  3.5 cm/s

2.  27/2 cm/s

3.  54 cm/s

4.  54/2 cm/s

Subtopic:  Molecular Velocity |
 65%
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NEET 2023 - Target Batch - Aryan Raj Singh
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A gaseous mixture contains 4 molecules with a velocity of 6 cm sec-1, 5 molecules with a velocity of 2 cm sec-1 and 10 molecules with a velocity of 3 cm sec-1. What is the RMS velocity of the gas:

1.  2.5 cm sec-1

2.  1.9 cm sec-1

3.  3.6 cm sec-1

4.  4.6 cm sec-1

Subtopic:  Ideal Gas Law |
 58%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

The ratio between the root mean square velocity of H2 at 50 K and that of O2 at 800 K is:

1.  4

2.  2

3.  1

4.  1/4

Subtopic:  Molecular Velocity |
 73%
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NEET 2023 - Target Batch - Aryan Raj Singh
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If C1, C2, C3... represent the speeds of n1, n2, n3... molecules respectively, then the root mean square speed will be:

1.  n1C12+n2C22+n3C32 +...n1+n2+n3 +...

2.  n1+n2+n3 +...2n1C12+n2C22+n3C32 +...

3.  n1C1n1+n2C2n2+n3C3n3

4.  n1C1+n2C2+n2C3 +...2n1+n2+n3 +...

Subtopic:  Molecular Velocity |
 79%
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Hints

At what temperature will average speed of the molecules of the second member of the series CnH2n be the same of Cl2 at 627°C?

1.  259.4 K

2.  400 K

3.  532.4 K

4.  None of these

Subtopic:  Molecular Velocity |
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NEET 2023 - Target Batch - Aryan Raj Singh
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If URMS of a gas is 30 R1/2 ms-1 at 27°C then the molar mass of gas is:

1.  0.02 kg/mol

2.  0.001 kg/mol

3.  0.003 kg/mol

4.  1 kg/mol

Subtopic:  Molecular Velocity |
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The compressibility factor for nitrogen at 330 K and 800 atm is 1.90 and at 570 K and 200 atm is 1.10. A certain mass of N2 occupies a volume of 1 dm3 at 330 K and 800 atm. Calculate volume occupied by same quantity of N2 gas at 570 K and 200 atm:

1.  1 L

2.  2 L

3.  3 L

4.  4 L

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

Consider the following statements. If the van der Waals' parameters of two gases are given as

                                a/dm6 bar mol-2                               b/dm3 mol-1
Gas A                                6.5                                                 0.055
Gas B                                  2                                                     0.01

then:

1.  Critical volume of A > Critical volume of B
2.  Critical pressure A > Critical temperature of B
3.  Critical temperature of A > Critical temperature of B

Which of the above statement is incorrect?

1.  1 alone

2.  1 and 2

3.  1, 2 and 3

4.  2 and 3

Subtopic:  Compressibility Factor |
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NEET 2023 - Target Batch - Aryan Raj Singh
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 The van der Waals parameters for gases W, X, Y and Z are

Gas

a (atm L2 mol-2)

b(L mol-1)

W

4.0

0.027

X

8.0

0.030

Y

6.0

0.032

Z

12.0

0.027

Which one of these gases has the highest critical temperature?

1.  W

2.  X

3.  Y

4.  Z

Subtopic:  Compressibility Factor |
 77%
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Pressure remaining the same, the volume of a given mass of an ideal gas increase for every degree centigrade rise in temperature by definite fraction of its volume at:

1.  0°C

2.  Its critical temperature

3.  Absolute zero

4.  Its Boyle temperature

Subtopic:  Gas Laws |
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh