Q. No.If 1.00 kcal of heat is added to 1.2 L of oxygen in a cylinder at constant pressure of 1.000 atm, the volume increases to 1.5 L, Hence for this process is:
1. 0.993 kcal
2. 1.0073 kcal
3. 0.0993 kcal
4. 1.00073 kcal
Find the compound with the lowest fuel value (kJ/g) from the following heats of combustion:
CH₄, C₂H₄, and C₂H₆ have heats of combustion −890, −1411, and −1560 kJ/mol, respectively.
1.
2.
3.
4. All have same fuel value
| Assertion (A): | The standard heat of combustion of a hydrocarbon compound is an intensive property. |
| Reason (R): |
The standard heat of combustion is considered an intensive property because the amount of the substance is defined as 1 mole. |
| 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. |
The temperature of 5 ml of a strong acid increases by when 5 ml of a strong base is added to it. If 10 ml of each is mixed, temperature should increase by-
1.
2.
3.
4. cannot be known
The heat of neutralisation of HCl by NaOH is -55.9 kJ/mole. If the heat of neutralisation of HCN by NaOH is -12.1 kJ/mole, then energy of dissociation of HCN is-
1. -43.8 kJ
2. 43.8 kJ
3. 68 kJ
4. -68 kJ
Identify the correct statement for a system at equilibrium:
1. ΔG = ΔG° = 0
2. ΔG = 0, but ΔG° ≠ 0
3. ΔG° = 0, but ΔG ≠ 0
4. ΔG = ΔG° ≠ 0
Using only the following data:
(I)
(II)
the value, in kilojoules, for the reaction
is calculated to be:
1. -43.3
2. -10.3
3. +6.2
4. +10.3
82 litres of carbon dioxide are produced at a pressure of 1 atm by the action of acid on a metal carbonate. The work done at room temperature by the gas (in calories) in pushing back the atmosphere is:
1. 1000
2. 820
3. 1640
4. 2000
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