Q. No.
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.
A plot of volume versus temperature (T) for a gas at constant pressure is a straight line passing through the origin. The plots at different values of pressure are shown in the figure given below.
The correct order of pressure is -
Temperature (K)
1.
2.
3.
4.
In the given figure, the curve representing an ideal gas is-
1. B only
2. C and D only
3. E and F only
4. A and B only
Match the graphs between the following variables with their names.
|
Graphs |
Names |
|
A. Pressure vs temperature graph at constant molar volume |
1. Isotherms |
|
B. Pressure vs |
2. Constant temperature Curve |
|
C. Volume vs temperature graph at constant pressure. |
3. Isochores |
|
4. Isobars |
Codes
| Options: | A | B | C |
| 1. | 3 | 1 | 4 |
| 2. | 1 | 2 | 3 |
| 3. | 5 | 4 | 3 |
| 4. | 4 | 5 | 3 |
Match the following gas law with the equation representing them.
|
A. Boyle’s law |
1. at constant T and p |
|
B. Charle’s law |
2. …constant T,V |
|
C. Dalton’s law |
3. constant |
|
D. Avogadro’s law |
4. at constant n and p |
|
5. at constant n and T |
Codes
| Options: | A | B | C | D |
| 1. | 5 | 4 | 2 | 1 |
| 2. | 3 | 4 | 2 | 1 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 5 | 3 | 2 |
Match the following graphs of an ideal gas with their coordinates.
|
Graphical representation |
X and Y coordinates |
|
A. |
1. pV vs V |
|
B. |
2. p vs V |
|
C. |
3. p vs |
Codes
| Options: | A | B | C |
| 1. | 2 | 3 | 1 |
| 2. | 1 | 2 | 3 |
| 3. | 3 | 2 | 1 |
| 4. | 1 | 3 | 1 |
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. |
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. |
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. |
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. |
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