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Q. No.Match List-I with List-II:
List-I
(Mixture)
List-II
(Method of Separation)
A.
\( \mathrm{CHCl}_3+ \mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2 \)
I.
Distillation under
reduced pressure
B.
Crude oil in petroleum industry
II.
Steam distillation
C.
Glycerol from spent-lye
III.
Fractional distillation
D.
Aniline-water
Iv.
Simple distillation
Choose the correct answer from the option given below:
1. A-III, B-IV, C-I, D-II
2. A-III, B-IV, C-II, D-I
3. A-IV, B-III, C-I, D-II
4. A-IV, B-III, C-II, D-I
(Mixture)
(Method of Separation)
reduced pressure
Subtopic: Purification of Organic Compounds |
63%
Level 2: 60%+
NEET - 2025
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Which one of the following reactions does not belong to "Lassaigne's test"?
| 1. | \(\mathrm{Na}+\mathrm{X} \underset{\Delta}{\longrightarrow}+\mathrm{NaX} \) |
| 2. | \(2 \mathrm{CuO}+\mathrm{C} \xrightarrow[\Delta]{} 2 \mathrm{Cu}+\mathrm{CO}_2 \) |
| 3. | \(\mathrm{Na}+\mathrm{C}+\mathrm{N} \xrightarrow[\Delta]{} \mathrm{NaCN} \) |
| 4. | \(2 \mathrm{Na}+\mathrm{S} \xrightarrow[\Delta]{} \mathrm{Na}_2 \mathrm{~S}\) |
Subtopic: Qualitative Analysis of Organic Compounds |
66%
Level 2: 60%+
NEET - 2025
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During Lassaigne's test, the elements present in an organic compound are converted from:
| 1. | Covalent form to covalent form |
| 2. | Ionic form to ionic form |
| 3. | Covalent form to ionic form |
| 4. | Ionic form to covalent form |
Subtopic: Qualitative Analysis of Organic Compounds |
69%
Level 2: 60%+
NEET - 2026
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Subtopic: Structural Isomers | Conformational Isomers |
76%
Level 2: 60%+
NEET - 2026
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The correct IUPAC name of the following compound is:
1. 2,4-diethylhexane
2. 3,5-diethylhexane
3. 3-ethyl-5-methylheptane
4. 3-methyl-5-ethylheptane
1. 2,4-diethylhexane
2. 3,5-diethylhexane
3. 3-ethyl-5-methylheptane
4. 3-methyl-5-ethylheptane
Subtopic: Nomenclature |
84%
Level 1: 80%+
NEET - 2026
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Hints
The stabilization of a carbocation by an attached methyl group is primarily due to:
| 1. | -I inductive effect | 2. | Electromeric effect |
| 3. | Hyperconjugation | 4. | Mesomeric effect |
Subtopic: Electron Displacement Effects |
72%
Level 2: 60%+
NEET - 2024
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On complete combustion, \(0.3 \mathrm{~g}\) of an organic compound gave \(0.2 \mathrm{~g}\) of \(\mathrm{CO}_2~ \mathrm{and}~ 0.1 \mathrm{~g}\) of \(\mathrm{H}_2 \mathrm{O}\). The percentage composition of carbon and hydrogen in the compound, respectively is:
1. \(4.07 \% ~\mathrm{and}~ 15.02 \%\)
2. \(18.18 \% ~\mathrm{and}~ 3.70 \%\)
3. \(15.02 \% ~\mathrm{and}~ 4.07 \%\)
4. \(3.70 \% ~\mathrm{and}~ 18.18 \%\)
1. \(4.07 \% ~\mathrm{and}~ 15.02 \%\)
2. \(18.18 \% ~\mathrm{and}~ 3.70 \%\)
3. \(15.02 \% ~\mathrm{and}~ 4.07 \%\)
4. \(3.70 \% ~\mathrm{and}~ 18.18 \%\)
Subtopic: Quantitative Analysis of Organic Compounds |
73%
Level 2: 60%+
NEET - 2024
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An organic compound that is immiscible with water and undergoes steam distillation has a normal boiling point of 250 °C. At what temperature does the mixture of this compound and water distill during steam distillation?
1. Above 100 °C but significantly below 250 °C2. Above 250 °C
3. At 250 °C
4. Slightly below 100 °C
Subtopic: Qualitative Analysis of Organic Compounds |
Level 4: Below 35%
NEET - 2024
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Which of the following options is the correct IUPAC name for the given compound?
1. 4-Ethyl-1-fluoro-2-nitrobenzene
2. 4-Ethyl-1-fluoro-6-nitrobenzene
3. 3-Ethyl-6-fluoro-1-nitrobenzene
4. 1-Ethyl-4-fluoro-3-nitrobenzene
1. 4-Ethyl-1-fluoro-2-nitrobenzene
2. 4-Ethyl-1-fluoro-6-nitrobenzene
3. 3-Ethyl-6-fluoro-1-nitrobenzene
4. 1-Ethyl-4-fluoro-3-nitrobenzene
Subtopic: Nomenclature |
59%
Level 3: 35%-60%
NEET - 2024
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Subtopic: Qualitative Analysis of Organic Compounds |
73%
Level 2: 60%+
NEET - 2024
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