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Q. No.Assertion(A): The compressibility factor 'Z' is equal to the ratio of the molar volume of a real gas and the molar volume of an ideal gas.
Reason(R): 'Z' depends upon the pressure of real gas.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Reason(R): 'Z' depends upon the pressure of real gas.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Subtopic: Compressibility Factor |
53%
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Assertion(A): Above critical temperature liquid phase does not exist.
Reason(R): At critical temperature gas always shows non-ideal behaviour.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Reason(R): At critical temperature gas always shows non-ideal behaviour.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Subtopic: Liquefaction of Gases & Liquid |
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Assertion(A): The compressibility factor for hydrogen varies with pressure with a positive slope at all pressures.
Reason(R): Even at low pressures, repulsive forces dominate in hydrogen gas.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Reason(R): Even at low pressures, repulsive forces dominate in hydrogen gas.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Subtopic: Compressibility Factor |
66%
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Given below are two statements:
| Assertion (A): | Liquids tend to have a maximum number of molecules at their surface. |
| Reason (R): | Small liquid drops have a spherical shape. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Liquefaction of Gases & Liquid |
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Given below are two statements:
| Assertion (A): | At the critical temperature, the liquid passes into a gaseous state imperceptible and continuously. |
| Reason (R): | The density of the liquid and gaseous phase is equal to critical temperature. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Liquefaction of Gases & Liquid |
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Given below are two statements:
| Assertion (A): | Gases do not liquefy above their critical temperature, even on applying high pressure. |
| Reason (R): | Above the critical temperature, the molecular speed is high and intermolecular attractions cannot hold the molecules together because they escape because of high speed. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Liquefaction of Gases & Liquid |
84%
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Given below are two statements:
| Assertion (A): | The temperature at which the vapor pressure of a liquid is equal to the external pressure is called boiling temperature. |
| Reason (R): | At high altitudes atmospheric pressure is high. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Liquefaction of Gases & Liquid |
74%
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Given below are two statements:
| Assertion (A): | At constant temperature, pV vs p plot for real gases is not a straight line. |
| Reason (R): | At high pressure, all gases have Z>1 but at an intermediate pressure most gases have Z<1. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Compressibility Factor |
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Given below are two statements:
| Assertion (A): | Three states of matter are the result of a balance between intermolecular forces and the thermal energy of the molecules. |
| Reason (R): | Intermolecular forces tend to keep the molecules together but the thermal energy of molecules tends to keep them apart. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Introduction to States of Matter |
80%
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| Assertion (A) | Critical temperatures for carbon dioxide and methane are 31.1 °C and –81.9 °C respectively. |
| Reason (R) | The intermolecular forces of attraction are stronger in CO2 than CH4 |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Liquefaction of Gases & Liquid |
73%
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