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Q. No.Match the reagents in List-I with the corresponding reactions in List-II:
Choose the correct answer from the options given below:
1. A-II, B-III, C-I, D-IV
2. A-IV, B-III, C-I, D-II
3. A-I, B-III, C-IV, D-II
4. A-II, B-I, C-III, D-IV
| List-I (Reagent) |
List-II (Name of the reaction) |
||
| A | \(\mathrm{{H}_2, {Pd}-{Ba}S {O}_4}\) | I | Gattermann-Koch reaction |
| B | \(\mathrm{{(i) \; {CrO}_2 {Cl}_2, {CS}_2\\ (ii) ~{H}_2 {O}/H^+}}\) | II | Reimer-Tiemann reaction |
| C | \(\mathrm{{CO, HCl, Anhyd.~\\ {AlCl}_3 / {CuCl}}}\) | III | Etard reaction |
| D | \(\mathrm{{CHCl}_3, {NaOH}}\) | IV | Rosenmund reduction |
Choose the correct answer from the options given below:
1. A-II, B-III, C-I, D-IV
2. A-IV, B-III, C-I, D-II
3. A-I, B-III, C-IV, D-II
4. A-II, B-I, C-III, D-IV
Subtopic: Aldehydes & Ketones: Preparation & Properties |
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Level 1: 80%+
NEET - 2024
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Match Column I with Column II and mark the appropriate option :
1. A(Q); B(R); C(P); D(S)
2. A(P); B(R); C(Q); D(S)
3. A(Q); B(P); C(R); D(S)
4. A(Q); B(P); C(S); D(Q)
| Column I (Reagents) |
Column II (Compounds) |
||
| (A) | Neutral \(FeCl_3 \) | (P) |  |
| (B) | Iodoform | (Q) |  |
| (C) | Carbylamine test | (R) |  |
| (D) | \(CuSO_4 + \) Sodium potassium tartrate (Rochelle’s salt) |
(S) |  |
1. A(Q); B(R); C(P); D(S)
2. A(P); B(R); C(Q); D(S)
3. A(Q); B(P); C(R); D(S)
4. A(Q); B(P); C(S); D(Q)
Subtopic: Aldehydes & Ketones: Preparation & Properties |
92%
Level 1: 80%+
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Consider the following statements:
The correct statement(s) is/are:
1. (c) only
2. (b) only
3. (a) and (b) only
4. (b) and (c) only
| (a) | Boiling points of aldehydes are higher than those of ethers of comparable molecular mass. |
| (b) | Propanone is miscible with water in all proportions. |
| (c) | Methanal and ethanal are gases at room temperature. |
The correct statement(s) is/are:
1. (c) only
2. (b) only
3. (a) and (b) only
4. (b) and (c) only
Subtopic: Aldehydes & Ketones: Preparation & Properties |
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Level 1: 80%+
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The reactivity of carbonyl compounds towards nucleophilic addition reaction gets affected by:
| 1. | Magnitude of positive charge on the carbonyl carbon atom. |
| 2. | Steric hindrance around the carbonyl group. |
| 3. | Presence of electron-withdrawing groups surrounding the carbonyl group. |
| 4. | All of the above |
Subtopic: Aldehydes & Ketones: Preparation & Properties |
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Match the items in column I with the items in column II.
| Column I | Column II | ||
| a. | 2-Hydroxycyclopentane carbaldehyde | i. |  |
| b. | Di-sec-butyl ketone | ii. |  |
| c. | α-Methoxypropionaldehyde | iii. |  |
| d. | 4-Fluoroacetophenone | iv. |  |
| 1. | a-iv; b-i; c-iii; d-ii | 2. | a-ii; b-iv; c-i; d-iii |
| 3. | a-iii; b-i; c-iv; d-ii | 4. | a-iv; b-iii; c-i; d-ii |
Subtopic: Aldehydes & Ketones: Preparation & Properties |
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In the given reaction, the hybridization of carbon bonded to oxygen changes from:
1. sp2 to sp3
2. sp to sp2
3. sp2 to sp
4. sp3 to sp2
1. sp2 to sp3
2. sp to sp2
3. sp2 to sp
4. sp3 to sp2
Subtopic: Aldehydes & Ketones: Preparation & Properties |
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The oxidation of toluene to benzaldehyde by chromyl chloride is called:
1. Etard reaction
2. Riemer-Tiemann reaction
3. Stephen’s reaction
4. Cannizzaro’s reaction
1. Etard reaction
2. Riemer-Tiemann reaction
3. Stephen’s reaction
4. Cannizzaro’s reaction
Subtopic: Aldehydes & Ketones: Preparation & Properties |
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Given below are two statements:
| Statement I: | Cannizzaro reaction requires an aldehyde that lacks an \(\alpha\)-hydrogen. |
| Statement II: | A concentrated solution of a strong base is involved in the Cannizzaro reaction. |
| 1. | Statement I is false but Statement II is true. |
| 2. | Both Statement I and Statement II are false. |
| 3. | Both Statement I and Statement II are true. |
| 4. | Statement I is true but Statement II is false. |
Subtopic: Aldehydes & Ketones: Preparation & Properties |
90%
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The correct match of column I (chemicals) with column II (used to detect a functional group) is:
| Column I Chemicals |
Column II Detection |
||
| a. | Ammoniacal solution of silver nitrate |
(p) | Detect or confirm the position of the double bond |
| b. | \(I_2/ NaOH\) | (q) | Presence of a strongly acidic group |
| c. | \(NaHCO_3\) | (r) | Presence of acetylene group or CHO group |
| d. | Ozonolysis | (s) | Presence of \(-CH-CH_3\\ ~~~|\\~~ OH\) |
| a | b | c | d | |
| 1. | r | p | q | s |
| 2. | q | s | p | r |
| 3. | r | s | q | p |
| 4. | s | q | p | r |
Subtopic: Aldehydes & Ketones: Preparation & Properties |
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Subtopic: Aldehydes & Ketones: Preparation & Properties |
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Level 1: 80%+
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