Q. No.Which of the following statement(s) are correct:
(1) A plot of log KP versus 1/T is linear
(2) A plot of log (X) versus time is linear for a first-order reaction '
(3) A plot of log P versus 1/T is linear at constant volume
(4) A plot of P versus 1/V is linear at a constant temperature.
(1) 1, 2
(2) 2, 4
(3) 2, 3
(4) 1, 4
| 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: At Boyle's temperature, the compressibility factor of gas approaches unity.
R: At Boyle's temperature the real gas obeys ideal gas law.
1. Both assertion & reason are true and the reason is the correct explanation of the assertion.
2. Both assertion & reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is a true statement but reason is false.
4. Both assertion and reason are false statements.
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. |
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