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Q. No.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 |
72%
Level 2: 60%+
Hints
2. Amine (NH2)
3. Aldehyde (CHO)
4. Carboxylic acid (COOH)
Subtopic: Detection of the functional groups |
89%
Level 1: 80%+
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 |
Level 3: 35%-60%
Hints
Which of the following gives foul-smelling gas with the smell of rotten eggs with dil. \(H_2SO_4\)?
1. \(CO^{2-}_3\)
2. \(SO^{2-}_3\)
3. \(S^{2-}\)
4. \(NO^-_2\)
1. \(CO^{2-}_3\)
2. \(SO^{2-}_3\)
3. \(S^{2-}\)
4. \(NO^-_2\)
Subtopic: Detection of Anions |
81%
Level 1: 80%+
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 |
78%
Level 2: 60%+
Hints
Which gas is evolved 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
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 |
78%
Level 2: 60%+
Hints
Which compound among the following exhibits a higher melting point?
1. p-Nitro acetanilide
2. Acetanilide
3. Aniline
4. Acetone
1. p-Nitro acetanilide
2. Acetanilide
3. Aniline
4. Acetone
Subtopic: Preparation of the Organic and Inorganic compounds |
73%
Level 2: 60%+
Hints
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
1. p-Nitro acetanilide
2. Acetanilide
3. Sodium benzoate
4. None of the above
Subtopic: Preparation of the Organic and Inorganic compounds |
Level 3: 35%-60%
Hints
In the preparation of p-nitroacetanilide, what role does acetic anhydride play?
1. It acts as a catalyst
2. It serves as a solvent
3. It acetylates the amino group
4. It nitrosylates the amino group
1. It acts as a catalyst
2. It serves as a solvent
3. It acetylates the amino group
4. It nitrosylates the amino group
Subtopic: Preparation of the Organic and Inorganic compounds |
76%
Level 2: 60%+
Hints
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