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Q. No.Assertion(A): Acetic acid is a weaker acid than formic acid.
Reason(R): +l effect of CH3 makes the acetic acid weaker.
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 a true statement but R is false.
4. Both A and R are false statements.
Subtopic: Carboxylic Acids: Preparation & Properties |
91%
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| Assertion (A): | Benzaldehyde is less reactive than acetaldehyde towards nucleophiles. |
| Reason (R): | Carbonyl carbon in benzaldehyde has less positive charge than that of carbonyl carbon in acetaldehyde due to resonance. |
| 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. |
Subtopic: Aldehydes & Ketones: Preparation & Properties |
78%
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Assertion(A): \(~~~~~~~~~~~~O\\ ~~~~~~~~~~~~\|\\ HO-C-CH_3 \) does not undergo haloform reaction.
Reason(R): It has no \(\alpha-\)hydrogen atom.
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 a true statement but R is false.
4. Both A and R are false statements.
Reason(R): It has no \(\alpha-\)hydrogen atom.
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 a true statement but R is false.
4. Both A and R are false statements.
Subtopic: Name Reaction |
54%
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Assertion(A): In crossed Cannizarro's reaction, HCHO is oxidized while C6H5CHO is reduced.
Reason(R): Nucleophile (OH-) attacks on HCHO. Hence, formaldehyde is oxidized.
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 a true statement but R is false.
4. Both A and R are false statements.
Reason(R): Nucleophile (OH-) attacks on HCHO. Hence, formaldehyde is oxidized.
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 a true statement but R is false.
4. Both A and R are false statements.
Subtopic: Name Reaction |
82%
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| Assertion (A): | Formic acid can be oxidized to carbonic acid. |
| Reason (R): | Formic acid does not give brisk effervescence with NaHCO3. |
| 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. |
Subtopic: Carboxylic Acids: Preparation & Properties |
52%
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Given below are two statements:
| Assertion (A): | Aldehydes and ketones give nucleophilic addition reaction but acyl derivatives give nucleophilic substitution reaction. |
| Reason (R): | Aldehydes and ketones contain stronger bases and poor leaving groups in comparison to acyl derivatives. |
| 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. |
Subtopic: Aldehydes & Ketones: Preparation & Properties | Acid Derivatives - Preparation, Properties & Uses |
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Match the chemical composition in List-I with its name in List-II.
Choose the correct answer from the options given below:
| List-I (Chemical Composition) |
List-II (Reagent) |
||
| (A) | Benzenesulphonyl chloride | (I) | Tollen's reagent |
| (B) | Anhydrous ZnCl2 + Conc. HCl | (II) | Fehling A solution |
| (C) | Ammoniacal silver nitrate | (III) | Hinsberg's reagent |
| (D) | Aqueous CuSO4 solution | (IV) | Lucas reagent |
| (A) | (B) | (C) | (D) | |
| 1. | (IV) | (III) | (I) | (II) |
| 2. | (III) | (IV) | (I) | (II) |
| 3. | (III) | (IV) | (II) | (I) |
| 4. | (I) | (II) | (IV) | (III) |
Subtopic: Name Reaction |
89%
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Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
| Assertion (A): | Acetic acid is more acidic than phenol. |
| Reason (R): | Acetate ion is more stable than phenoxide ion. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 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: Carboxylic Acids: Preparation & Properties |
77%
From NCERT
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Identify the reaction(s) which do not give n-propyl benzene as a major product:
Choose the correct answer from the options given below:
1. A only
2. A and B only
3. C and D only
4. D only
| A. |  |
| B. |  |
| C. |  |
| D. |  |
Choose the correct answer from the options given below:
1. A only
2. A and B only
3. C and D only
4. D only
Subtopic: Name Reaction |
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| Assertion (A): | In presence of NaBH4, \(~~~~~~~~~~~~~~~~~~~~~~~~~O\\ ~~~~~~~~~~~~~~~~~~~~~~~~~\|\\ CH_2=CH-C-H\) is reduced to give \(CH_3-CH_2-CH_2OH.\) |
| Reason (R): | NaBH4 reduces conjugated double bonds also. |
| 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. |
Subtopic: Aldehydes & Ketones: Preparation & Properties |
62%
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