Match the following equilibria with the corresponding condition.
A. | LiquidVapour | 1. | Saturated solution |
B. | SolidLiquid | 2. | Boiling point |
C. | SolidVapour | 3. | Sublimation point |
D. | Solute (s)Solute (solution) | 4. | Melting point |
5. | Unsaturated solution |
Codes:
A | B | C | D | |
1. | 2 | 4 | 3 | 1 |
2. | 1 | 2 | 3 | 5 |
3. | 5 | 4 | 3 | 2 |
4. | 4 | 5 | 3 | 2 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | Equilibrium is possible only in a closed system at a constant temperature. |
2. | All measurable properties of the system remain constant. |
3. | All the physical processes stop at equilibrium. |
4. | The opposing processes occur at the same rate and there is a dynamic but stable condition. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn incorrect statement about equilibrium among the following is:
1. | In equilibrium mixture of ice and water kept in perfectly insulated flask, the mass of ice and water does not change with time. |
2. | The intensity of the red colour increases when oxalic acid is added to a solution containing iron (III) nitrate and potassium thiocyanate. |
3. | On the addition of a catalyst, the equilibrium constant value is not affected. |
4. | The equilibrium constant for a reaction with a negative ∆H value decreases as the temperature increases. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology are the respective ionisation constants for the following reactions.
\(\mathrm{H}_2 \mathrm{~S} \rightleftharpoons \mathrm{H}^{+}+\mathrm{HS}^{-}\)
\(\mathrm{HS}^{-} \rightleftharpoons \mathrm{H}^{+}+\mathrm{S}^{2-}\)
\(\mathrm{H}_2 \mathrm{~S} \rightleftharpoons 2 \mathrm{H}^{+}+\mathrm{S}^{2-}\)
The correct relationship between is:
1. \(\mathrm{K}_{\mathrm{a}_3}=\mathrm{K}_{\mathrm{a}_1} \times \mathrm{K}_{\mathrm{a}_2} \)
2. \(\mathrm{K}_{\mathrm{a}_3}=\mathrm{K}_{\mathrm{a}_1}+\mathrm{K}_{\mathrm{a}_2} \)
3. \(K_{a_3}=K_{a_1}-K_{a_2} \)
4. \(\mathrm{K}_{\mathrm{a}_3}=\mathrm{K}_{\mathrm{a}_1} / \mathrm{K}_{\mathrm{a}_2}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAt a particular temperature and atmospheric pressure, the solid and liquid phases of a pure substance can exist in equilibrium. Choose the terms which define this temperature:
(a) Normal melting point
(b) Equilibrium temperature
(c) Boiling point
(d) Freezing point
Choose the correct option:
1. | (a, b) | 2. | (b, c) |
3. | (c, d) | 4. | (a, d) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology