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Q. No.The correct IUPAC name of the following compound is:
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 |
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A steam volatile organic compound which is immiscible with water has a boiling point of \(250^\circ \text{C}\). During steam distillation, a mixture of this organic compound and water will boil:
1. above \(100^\circ \text{C}\) but below \(250^\circ \text{C}\).
2. above \(250^\circ \text{C}\).
3. at \(250^\circ \text{C}\).
4. close to but below \(100^\circ \text{C}\).
1. above \(100^\circ \text{C}\) but below \(250^\circ \text{C}\).
2. above \(250^\circ \text{C}\).
3. at \(250^\circ \text{C}\).
4. close to but below \(100^\circ \text{C}\).
Subtopic: Qualitative Analysis of Organic Compounds |
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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 |
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Methyl group attached to a positively charged carbon atom stabilizes the carbocation due to:
1. -I inductive effect
2. electromeric effect
3. hyperconjugation
4. mesomeric effect
1. -I inductive effect
2. electromeric effect
3. hyperconjugation
4. mesomeric effect
Subtopic: Electron Displacement Effects |
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Subtopic: Qualitative Analysis of Organic Compounds |
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The technique used to purify liquids having high boiling points and getting decomposed at or below their boiling points is:
1. fractional distillation
2. steam distillation
3. simple distillation
4. distillation under reduced pressure
1. fractional distillation
2. steam distillation
3. simple distillation
4. distillation under reduced pressure
Subtopic: Qualitative Analysis of Organic Compounds |
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The method used for quantitative estimation of halogens is:
1. Dumas method
2. Carius method
3. Kjeldahl's method
4. Combustion method
1. Dumas method
2. Carius method
3. Kjeldahl's method
4. Combustion method
Subtopic: Qualitative Analysis of Organic Compounds |
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Phenanthrene is an aromatic compound and follows Huckel's \((4 n+2) \pi\) electron rule. The value of \(n\) is:
1. 0
2. 1
3. 2
4. 3
1. 0
2. 1
3. 2
4. 3
Subtopic: Aromaticity & Polarity |
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Subtopic: Reaction Intermediates ; Preparation & Properties |
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A compound with a molecular formula of C6H14 has two tertiary carbons. Its IUPAC name is:
1. 2-methyl pentane
2. 2, 3-dimethylbutane
3. 2, 2-dimethylbutane
4. n-hexane
1. 2-methyl pentane
2. 2, 3-dimethylbutane
3. 2, 2-dimethylbutane
4. n-hexane
Subtopic: Nomenclature |
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