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Q. No.Match the following equilibria with the corresponding condition.
| A. | Liquid ⇌ Vapour | I. | Saturated solution |
| B. | Solid ⇌ Liquid | II. | Boiling point |
| C. | Solid ⇌ Vapour | III. | Sublimation point |
| D. | Solute (s) ⇌ Solute (solution) | IV. | Melting point |
| V | Unsaturated solution |
Codes:
| A | B | C | D | |
| 1. | II | IV | III | I |
| 2. | I | II | III | V |
| 3. | V | IV | III | II |
| 4. | IV | V | III | II |
Subtopic: Introduction To Equilibrium |
90%
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Some reactions are written below in Column I and their equilibrium constants in terms of Kc are written in Column II.
Match the following reactions with the corresponding equilibrium constant.
Match the following reactions with the corresponding equilibrium constant.
| Column I (Reaction) | Column II (Equilibrium constant) |
| A. 2N2(g)+6H2(g)⇌4NH3(g) | 1. 2Kc |
| B. 2NH3(g)⇌N2(g)+3H2(g) | 2. K1/2c |
| C. 12N2(g)+32H2(g)⇌NH3(g) | 3. 1Kc |
| 4. K2c |
Codes:
| A | B | C | |
| 1. | 4 | 3 | 2 |
| 2. | 1 | 2 | 3 |
| 3. | 1 | 4 | 3 |
| 4. | 4 | 1 | 3 |
Subtopic: Kp, Kc & Factors Affecting them |
81%
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Match the standard free energy of the reaction with the corresponding equilibrium constant.
| A. ∆G⊝>0 | 1. K>1 |
| B. ∆G⊝<0 | 2. K=1 |
| C. ∆G⊝=0 | 3. K=0 |
| 4. K<1 |
Codes:
| A | B | C | |
| 1. | 4 | 1 | 2 |
| 2. | 1 | 2 | 3 |
| 3. | 2 | 4 | 3 |
| 4. | 4 | 1 | 3 |
Subtopic: Kp, Kc & Factors Affecting them |
67%
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Match the following species with the corresponding conjugate acid:
| Species | Conjugate acid |
| A. NH3 | 1. CO2-3 |
| B. HCO-3 | 2. NH+4 |
| C. H2O | 3.H3O+ |
| D. HSO-4 | 4. H2CO3 |
| 5. H2SO4 |
Codes
| A | B | C | D | |
| 1. | 2 | 5 | 1 | 5 |
| 2. | 2 | 4 | 3 | 5 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 5 | 3 | 2 |
Subtopic: Acids & Bases - Definitions & Classification |
95%
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Match Column-I with Column-II and mark the appropriate option:
|
Column-I (Term) |
Column-II (Conditions) |
||
| (A) |
Equilibrium |
(i) |
∆G>0,K<1 |
| (B) |
Spontaneous reaction |
(ii) |
∆G=0 |
| (C) |
Non-spontaneous reaction |
(iii) |
∆G<0,K>1 |
Codes:
| Options: | A | B | C |
| 1. | (ii) | (iii) | (i) |
| 2. | (i) | (ii) | (iii) |
| 3. | (ii) | (i) | (iii) |
| 4. | (iii) | (i) | (ii) |
Subtopic: Kp, Kc & Factors Affecting them |
82%
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Given below are two statements:
| Assertion (A): | The increasing order or acidity of hydrogen halides is HF<HCI<HBr<HI. |
| Reason (R): | While comparing acids formed by the elements belonging to the same group of the periodic table, H-A bond strength is a more important factor in determining the acidity of an acid than the polar nature of the bond. |
| 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. |
Subtopic: Acids & Bases - Definitions & Classification |
83%
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Given below are two statements:
| Assertion (A): | A solution containing a mixture of acetic acid and sodium acetate maintains a constant value of pH on the addition of small amounts of acid or alkali. |
| Reason (R): | A solution containing a mixture of acetic acid and sodium acetate acts as a buffer solution. |
| 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. |
Subtopic: Buffer |
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Given below are two statements:
| Assertion (A): | The ionisation of hydrogen sulphide in water is low in the presence of hydrochloric acid. |
| Reason (R): | Hydrogen sulphide is a weak acid. |
| 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. |
Subtopic: Common Ion Effect |
55%
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| Assertion (A): | For any chemical reaction at a particular temperature, the equilibrium constant is fixed and is a characteristic property. |
| Reason (R): | Equilibrium constant is independent of temperature. |
| 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. |
Subtopic: Kp, Kc & Factors Affecting them |
86%
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Given below are two statements:
| Assertion (A): | An aqueous solution of ammonium carbonate is basic. |
| Reason (R): |
The acidic or basic nature of a salt solution of a salt of a weak acid and a weak base depends on the Ka and Kb values of the acid and the base forming it. |
| 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. |
Subtopic: pH calculation |
62%
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