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Q. No.0.3 g of organic compound contains 40 % bromine in silver bromide by the Carius method, the mass of silver bromide is:
| 1. | 0.12 g | 2. | 0.28 g |
| 3. | 0.18 g | 4. | 0.021 g |
Subtopic: Quantitative Analysis of Organic Compounds |
78%
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Subtopic: Electron Displacement Effects |
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The IUPAC name of the above-given compound is:
1. 2,3,4-Trimethyl-3-(1-Methyl ethyl)pent-2-ene
2. 2,3,3-Trimethyl-3-(1-Methyl propyl)pent-2-ene
3. 2,3,4-Trimethyl-2-(1-Methyl ethyl)pent-2-ene
4. 2,4,4-Trimethyl-3-(1-Methyl ethyl)pent-2-ene
Subtopic: Nomenclature |
80%
From NCERT
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Which of the following functional groups are present in phenylalanine?
1. Alkyl, double bond, and aromatic ring.
2. Amine, and carboxylic acid.
3. Double bond, amide and alcohol.
4. Aromatic ring, halide and ketone.
1. Alkyl, double bond, and aromatic ring.
2. Amine, and carboxylic acid.
3. Double bond, amide and alcohol.
4. Aromatic ring, halide and ketone.
Subtopic: Nomenclature |
93%
From NCERT
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Which of the following characteristics correctly describes the differences between structural (constitutional) isomers?
1. I only
2. II and III only
3. I and III only
4. I, II, and III
| I: | These compounds may have different carbon skeletons. |
| II: | Chemical properties are altered due to the differences in functional groups. |
| III: | Functional groups may occupy different positions on the carbon skeleton. |
1. I only
2. II and III only
3. I and III only
4. I, II, and III
Subtopic: Structural Isomers |
66%
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Lassaigne's extract is boiled with conc. HNO3 while testing for halogens. By doing so, it:
1. Helps in the precipitation of AgCl
2. Increases the solubility product of AgCl
3. Increases the concentration of NO3- ions
4. Decomposes Na2S and NaCN, if formed.
Subtopic: Qualitative Analysis of Organic Compounds |
70%
From NCERT
NEET - 2011
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The technique in which the liquid boils, when the sum of vapour pressure due to organic liquid \((P_1)\) and that due to water \((P_2)\) becomes equal to the atmospheric pressure (P), is:
1. Sublimation
2. Fractional distillation
3. Steam distillation
4. Evaporation
1. Sublimation
2. Fractional distillation
3. Steam distillation
4. Evaporation
Subtopic: Purification of Organic Compounds |
75%
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How many hydrogens are involved in hyperconjugation in the given organic compound A?
| 1. | 12 | 2. | 13 |
| 3. | 15 | 4. | 16 |
Subtopic: Electron Displacement Effects |
57%
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0.2g of an organic compound containing C, H, and O, on combustion gave 0.147g CO2 and 0.12g water. The percentage of oxygen in the organic compound is :
| 1. | 73.29% | 2. | 70.51% |
| 3. | 77.24% | 4. | 80.50% |
Subtopic: Quantitative Analysis of Organic Compounds |
65%
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A pair of carbocations that has a more stable second carbocation than the first is :
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
Subtopic: Electron Displacement Effects |
56%
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