- 1(current)
Q. No.For given reaction
\(\mathrm{X}_2(\mathrm{~g})+\mathrm{Y}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{Z}(\mathrm{~g})\)
Moles of \(\mathrm{X_2, Y_2~\&~Z}\) at equilibrium are 3 moles, 3 moles & 9 moles respectively. If 10 moles of Z are added at constant T then find moles of Z at reestablished equilibrium:
1. 8
2. 12
3. 15
4. 21
\(\mathrm{X}_2(\mathrm{~g})+\mathrm{Y}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{Z}(\mathrm{~g})\)
Moles of \(\mathrm{X_2, Y_2~\&~Z}\) at equilibrium are 3 moles, 3 moles & 9 moles respectively. If 10 moles of Z are added at constant T then find moles of Z at reestablished equilibrium:
1. 8
2. 12
3. 15
4. 21
Subtopic: Le Chatelier's principle |
67%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given equilibrium:
\(\mathrm{CO}(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g}) \rightleftharpoons \mathrm{CH}_4(\mathrm{~g})+\mathrm{H}_2 \mathrm{O}(\mathrm{~g})\)
If the pressure applied to the system increases twofold at constant temperature, then
Choose the correct answer from the options given below:
\(\mathrm{CO}(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g}) \rightleftharpoons \mathrm{CH}_4(\mathrm{~g})+\mathrm{H}_2 \mathrm{O}(\mathrm{~g})\)
If the pressure applied to the system increases twofold at constant temperature, then
| (A) | Concentration of the reactants and the products increases. |
| (B) | Equilibrium will shift in the forward direction. |
| (C) | The equilibrium constant increases since the concentration of the products increases. |
| (D) | The equilibrium constant remains unchanged as the concentration of the reactants and the products remains the same. |
Choose the correct answer from the options given below:
| 1. | (A) and (B) only | 2. | (A), (B), and (D) only |
| 3. | (B) and (C) only | 4. | (A), (B), and (C) only |
Subtopic: Le Chatelier's principle |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following is true for the degree of dissociation \(\alpha\) and pressure \(\mathrm{{P}_{T}}, \) for the reversible reaction \(\mathrm{{A}({g})} \rightleftharpoons \mathrm{{B}({g})+{C}({g})} \)?
1. If \(\mathrm{{P}_{T} \gg K_{P}},\) then \(\alpha \approx 1 \)
2. If \(\mathrm{{P}_{T}}\) increases, then \(\alpha\) decreases
3. If \(\mathrm{{P}_{T}}\) increases, then \(\alpha\) increases
4. If \(\mathrm{K_P \gg P_T,} \) then \(\alpha \) tends towards 0
1. If \(\mathrm{{P}_{T} \gg K_{P}},\) then \(\alpha \approx 1 \)
2. If \(\mathrm{{P}_{T}}\) increases, then \(\alpha\) decreases
3. If \(\mathrm{{P}_{T}}\) increases, then \(\alpha\) increases
4. If \(\mathrm{K_P \gg P_T,} \) then \(\alpha \) tends towards 0
Subtopic: Le Chatelier's principle |
63%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
Consider the following equilibrium reaction:
\(\mathrm{Fe}_2 \mathrm{O}_3(\mathrm{~s})+3 \mathrm{CO}(\mathrm{g}) \rightleftharpoons 2 \mathrm{Fe}(\mathrm{s})+3 \mathrm{CO}_2(\mathrm{~g})~\)
Which of the following will not affect the equilibrium state?
(I) Addition of \(\mathrm{Fe}_2 \mathrm{O}_3\)
(II) Addition of \(CO_2\)
(III) Decreasing the mass of \(\mathrm{Fe}_2 \mathrm{O}_3\)
(IV) Removal of \(CO\)
1. (II) and (IV)
2. (I) and (IV)
3. (I) and (III)
4. All will affect the equilibrium state
\(\mathrm{Fe}_2 \mathrm{O}_3(\mathrm{~s})+3 \mathrm{CO}(\mathrm{g}) \rightleftharpoons 2 \mathrm{Fe}(\mathrm{s})+3 \mathrm{CO}_2(\mathrm{~g})~\)
Which of the following will not affect the equilibrium state?
(I) Addition of \(\mathrm{Fe}_2 \mathrm{O}_3\)
(II) Addition of \(CO_2\)
(III) Decreasing the mass of \(\mathrm{Fe}_2 \mathrm{O}_3\)
(IV) Removal of \(CO\)
1. (II) and (IV)
2. (I) and (IV)
3. (I) and (III)
4. All will affect the equilibrium state
Subtopic: Le Chatelier's principle |
67%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given reaction:
\(\mathrm{Cr}_2 \mathrm{O}_7^{2-} \rightleftharpoons \mathrm{CrO}_4^{2-}\)
In which medium does the reaction proceed in the forward direction?
1. Acidic medium
2. Basic medium
3. Neutral medium
4. Slightly acidic medium
\(\mathrm{Cr}_2 \mathrm{O}_7^{2-} \rightleftharpoons \mathrm{CrO}_4^{2-}\)
In which medium does the reaction proceed in the forward direction?
1. Acidic medium
2. Basic medium
3. Neutral medium
4. Slightly acidic medium
Subtopic: Le Chatelier's principle |
58%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Consider the following reaction
\(P C l_5(g) \rightleftharpoons P C l_3(g)+\mathrm{Cl}_2(g) \)
Select the correct statement about the above equilibrium reaction:
\(P C l_5(g) \rightleftharpoons P C l_3(g)+\mathrm{Cl}_2(g) \)
Select the correct statement about the above equilibrium reaction:
| 1. | On adding He gas at constant volume, equilibrium shifts in forward reaction. |
| 2. | On adding He gas at constant pressure, equilibrium shifts in forward reaction. |
| 3. | On adding He gas at constant pressure, equilibrium shifts in backward reaction. |
| 4. | On adding He gas at constant volume, equilibrium shifts in backward reaction. |
Subtopic: Le Chatelier's principle |
77%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
Consider the following reaction
\(\mathrm{N}_2 \mathrm{O}_4(g) \rightleftharpoons 2 \mathrm{NO}_2(g) ; \Delta H^0=+58 \mathrm{~kJ}\)
Also, consider the following stimuli on the above equilibrium.
| (I) | Temperature is decreased. |
| (II) | Pressure is increased by adding N2 at constant temperature. |
For each of the above cases (I, II), the direction in which the equilibrium shifts is:
1. (I) Towards reactant, (II) No change.
2. (I) Towards product, (II) Towards reactant.
3. (I) Towards product, (II) No change.
4. (I) Towards reactant, (II) Towards product.
Subtopic: Le Chatelier's principle |
57%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Find the change that will increase the amount of ClF₃ at equilibrium for the exothermic reaction:
Cl₂(g) + 3F₂(g) ⇌ 2ClF₃(g), ΔH = −329 kJ
1. Adding F₂2. Increasing the volume of the container
3. Removing Cl₂
4. Increasing the temperature
Subtopic: Le Chatelier's principle |
78%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
© 2026 GoodEd Technologies Pvt. Ltd.