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Q. No.Which solution is part of Fehling solution 'A' (used in tests for reducing sugars and aldehydes)?
1.
Alkaline copper sulphate
2.
Alkaline solution of sodium potassium tartrate (Rochelle's salt)
3.
Aqueous sodium citrate
4.
Aqueous copper sulphate
Subtopic: Aldehydes & Ketones: Preparation & Properties |
62%
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NEET - 2024
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Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options give below:
| Statement I: | Benzoic acid produces effervescence on treatment with aq. \(\mathrm{NaHCO}_3\) |
| Statement II: | The effervescence is due to the release of hydrogen gas. |
| 1. | Both Statement I and Statement II are correct. |
| 2. | Both Statement I and Statement II are incorrect. |
| 3. | Statement I is correct but Statement II is incorrect. |
| 4. | Statement I is incorrect but Statement II is correct. |
Subtopic: Carboxylic Acids: Preparation & Properties |
64%
From NCERT
NEET - 2024
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NEET 2025 - Target Batch
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Subtopic: Name Reaction |
From NCERT
NEET - 2024
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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. | \(\mathrm{{(i) \; {CrO}_2 {Cl}_2, {CS}_2\\ (ii) {H}_2 {C}}}\) | II. | Reimer-Tiemann reaction |
| C. | \(\mathrm{{CO, HCl, Anhyd.~\\ {AlCl}_3 / {CuCl}}}\) | III. | Etard reaction |
| D. | \(\mathrm{{CHCl}_3, {NaOH}}\) | IV. | Rosenmund reduction |
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 |
93%
From NCERT
NEET - 2024
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Subtopic: Aldehydes & Ketones: Preparation & Properties |
75%
From NCERT
NEET - 2024
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NEET 2025 - Target Batch
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Match the reactions listed in List-I with the appropriate reagents or conditions listed in List-II:
Choose the correct answer from the options given below:
| List-I (Reaction) |
List-II (Reagents/ Condition) |
||
| A. |  |
I. |  |
| B. |  |
II. | \(\mathrm{CrO}_3\) |
| C. |  |
III. | \(\begin{aligned} & \mathrm{KMnO}_4 \\ & \mathrm{KOH}, \Delta \end{aligned}\) |
| D. |  |
IV. | \(\mathrm{(i) \mathrm{O}_3\\ (ii) \mathrm{Zn}-\mathrm{H}_2 \mathrm{O}}\) |
| 1. | \(\text { A-III, B-I, C-II, D-IV }\) |
| 2. | \(\text { A-IV, B-I, C-II, D-III }\) |
| 3. | \(\text { A-I, B-IV, C-II, D-III }\) |
| 4. | \(\text { A-IV,B-I, C-III, D-II }\) |
Subtopic: Aldehydes & Ketones: Preparation & Properties | Carboxylic Acids: Preparation & Properties |
76%
From NCERT
NEET - 2024
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Which of the following reagents is used to synthesize the hemiketal of acetone?
1. HCl
2. CH₃OH
3. NaOH
4. HCHO
Subtopic: Aldehydes & Ketones: Preparation & Properties |
62%
From NCERT
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Nitriles are hydrolyzed to amides upon mild heating with an aqueous base or acid. The product of hydrolysis under stronger conditions is:
| 1. | Aldehyde | 2. | Ketone |
| 3. | Ester | 4. | Carboxylic acid |
Subtopic: Acid Derivatives - Preparation, Properties & Uses |
76%
From NCERT
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The following reaction is one of many steps in the laboratory synthesis of cholesterol. What type of reaction is it?
1. Reduction reaction.
2. Oxidation reaction.
3. Catalytic hydrogenation.
4. Electrophilic substitution.
1. Reduction reaction.
2. Oxidation reaction.
3. Catalytic hydrogenation.
4. Electrophilic substitution.
Subtopic: Aldehydes & Ketones: Preparation & Properties |
85%
From NCERT
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Subtopic: Name Reaction |
77%
From NCERT
NEET - 2023
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NEET 2025 - Target Batch
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