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Q. No.Which of the following compounds is more likely to demonstrate analgesic properties?
1. p-Nitro acetanilide
2. Acetanilide
3. Sodium benzoate
4. None of the above
Subtopic: Preparation of the Organic and Inorganic compounds |
51%
Level 3: 35%-60%
Hints
Which reagent is commonly used for the detection of hydroxyl groups?
1. Sodium hydroxide (NaOH)
2. Bromine water (Br2)
3. Sodium bicarbonate (NaHCO3)
4. Ammonia (NH3)
1. Sodium hydroxide (NaOH)
2. Bromine water (Br2)
3. Sodium bicarbonate (NaHCO3)
4. Ammonia (NH3)
Subtopic: Detection of the functional groups |
50%
Level 3: 35%-60%
Hints
Which functional group gives a positive test with 2,4-Dinitrophenylhydrazine (2,4-DNPH) reagent?
| 1. | Alcohol (-OH) | 2. | Ketone (C=O) |
| 3. | Carboxylic acid (COOH) | 4. | Ester (RCOO-) |
Subtopic: Detection of the functional groups |
80%
Level 1: 80%+
Hints
What is formed when a carbonyl compound reacts with Tollens' reagent (ammoniacal silver nitrate)?
1. White precipitate
2. Red coloration
3. Silver mirror
4. Blue solution
1. White precipitate
2. Red coloration
3. Silver mirror
4. Blue solution
Subtopic: Detection of the functional groups |
86%
Level 1: 80%+
Hints
Fehling's solution is used for the detection of which functional group?
1. Alcohol (-OH)
2. Amine (NH2)
3. Aldehyde (CHO)
4. Carboxylic acid (COOH)
1. Alcohol (-OH)
2. Amine (NH2)
3. Aldehyde (CHO)
4. Carboxylic acid (COOH)
Subtopic: Detection of the functional groups |
90%
Level 1: 80%+
Hints
Which functional group is identified through the use of Lucas reagent?
1. Alcohol (-OH)
2. Ester (RCOO-)
3. Amine (NH2)
4. Aldehyde (CHO)
1. Alcohol (-OH)
2. Ester (RCOO-)
3. Amine (NH2)
4. Aldehyde (CHO)
Subtopic: Detection of the functional groups |
91%
Level 1: 80%+
Hints
What gas evolves when carboxylic acids react with carbonates or bicarbonates?
1. Oxygen (O2)
2. Carbon dioxide (CO2)
3. Hydrogen (H2)
4. Nitrogen (N2)
1. Oxygen (O2)
2. Carbon dioxide (CO2)
3. Hydrogen (H2)
4. Nitrogen (N2)
Subtopic: Detection of Anions |
91%
Level 1: 80%+
Hints
Which reagent is used to distinguish between saturated and unsaturated hydrocarbons?
| 1. | Bromine water (Br2) | 2. | Silver nitrate (AgNO3) |
| 3. | Hydrochloric acid (HCl) | 4. | Potassium permanganate (KMnO4) |
Subtopic: Detection of the functional groups |
73%
Level 2: 60%+
Hints
What color product is formed when a ketone reacts with the 2,4-Dinitrophenylhydrazine (2,4-DNPH) reagent?
1. Orange/green precipitate
2. Brown precipitate
3. White precipitate
4. Yellow/orange precipitate
1. Orange/green precipitate
2. Brown precipitate
3. White precipitate
4. Yellow/orange precipitate
Subtopic: Detection of the functional groups |
79%
Level 2: 60%+
Hints
Which of the following reagents is NOT suitable for the detection of aldehydes?
1. Tollens' reagent
2. Fehling's solution
3. Schiff's reagent
4. Bromine water
1. Tollens' reagent
2. Fehling's solution
3. Schiff's reagent
4. Bromine water
Subtopic: Detection of the functional groups |
82%
Level 1: 80%+
Hints
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