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Q. No.What is the name of the below mentioned reaction?
\(\small{\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}+\mathrm{CH}_3 \mathrm{COCl} \stackrel{\text { Pyridine }}{\longrightarrow} \mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5+\mathrm{HCl}}\)
1. Acetylation
2. Cannizzaro reaction
3. Cross aldol condensation
4. Decarboxylation
\(\small{\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}+\mathrm{CH}_3 \mathrm{COCl} \stackrel{\text { Pyridine }}{\longrightarrow} \mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5+\mathrm{HCl}}\)
Subtopic: Name Reaction |
82%
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The reaction that does not give benzoic acid as the major product is:
| 1. |  \(\xrightarrow{K_2Cr_2O_7}\) |
2. |  \(\xrightarrow[(ii)H_3O^+]{(i)NaOCl}\) |
| 3. | \(\xrightarrow{PCC}\) |
4. | \(\xrightarrow{KMnO_4/H^+}\) |
Subtopic: Aldehydes & Ketones: Preparation & Properties | Carboxylic Acids: Preparation & Properties |
84%
From NCERT
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An acid that forms an anhydride (X) on heating and an acid imide (Y) on strong heating with ammonia is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Carboxylic Acids: Preparation & Properties |
83%
From NCERT
NEET - 2020
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Select the correct option based on statements below:
| Assertion (A): | Aldehydes and ketones both react with Tollen’s reagent to form a silver mirror. |
| Reason (R): | Both aldehydes and ketones contain a carbonyl group. |
| 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: Name Reaction |
80%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | Aromatic aldehydes and formaldehydes undergo the Cannizzaro reaction. |
| Reason (R): | Aromatic aldehydes are almost as reactive as formaldehyde. |
| 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: Isomers & Reaction Mechanism |
65%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | The α -hydrogen atom in carbonyl compounds is less acidic. |
| Reason (R): | The anion formed after the loss of the α -hydrogen atom is resonance stabilized. |
| 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: Isomers & Reaction Mechanism |
70%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | Compounds containing —CHO group are easily oxidised to corresponding carboxylic acids. |
| Reason (R): | Carboxylic acids can be reduced to alcohol by treatment with LiAlH4. |
| 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: Isomers & Reaction Mechanism |
81%
From NCERT
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Select the correct option based on the statements below:
| Assertion (A): | The geometry of formaldehyde molecule is planar. |
| Reason (R): | Formaldehyde molecule contains sp2 hybridized carbon 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 True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Carboxylic Acids: Preparation & Properties |
86%
From NCERT
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Match the example in Column I with the name of the reaction in Column II.
| Column l (Example) |
Column ll (Reaction) |
A.  |
1. Friedel-Crafts acylation |
B.  |
2. HVZ reaction |
C.  |
3. Aldol condensation |
D.  |
4. Rosenmund Reaction |
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 1 | 4 | 2 |
| 3. | 3 | 4 | 1 | 2 |
| 4. | 4 | 1 | 3 | 2 |
Subtopic: Name Reaction |
92%
From NCERT
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Match the reactions given in Column-I with the suitable reagents given in Column-II.
| Column-l (Reactions) |
Column-ll
(Reagents)
|
||
| A. | Benzophenone → Diphenylmethane | I. | LiAlH4 |
| B. | Benzaldehyde → 1-Phenylethanol | II. | DlBAL-H |
| C. | Cyclohexanone → Cyclohexanol | III. | Zn(Hg)/Conc. HCl |
| D. | Phenyl benzoate → Benzaldehyde | IV. | CH3MgBr |
Codes:
| A | B | C | D | |
| 1. | II | III | IV | I |
| 2. | III | IV | I | II |
| 3. | I | IV | III | II |
| 4. | IV | III | II | I |
Subtopic: Aldehydes & Ketones: Preparation & Properties |
79%
From NCERT
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