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Subtopic: Reaction Intermediates ; Preparation & Properties |
80%
From NCERT
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Acetone and methanol are separated by which of the following methods?
| 1. | Fractional distillation | 2. | Steam distillation |
| 3. | Vacuum distillation | 4. | Azeotropic distillation |
Subtopic: Purification of Organic Compounds |
56%
From NCERT
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The Kjeldahl's method for the estimation of nitrogen can be used to estimate the amount of nitrogen in which one of the following compounds?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Purification of Organic Compounds |
67%
From NCERT
NEET - 2022
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The correct IUPAC name of the following compound is :
1. 6-Bromo-4-methyl-2-chlorohexan-4-ol
2. 1-Bromo-5-chloro-4-methylhexan-3-ol
3. 6-Bromo-2-chloro-4-methylhaxan-4-ol
4. 1-Bromo-4-methyl-5-chorohexan-3-ol
1. 6-Bromo-4-methyl-2-chlorohexan-4-ol
2. 1-Bromo-5-chloro-4-methylhexan-3-ol
3. 6-Bromo-2-chloro-4-methylhaxan-4-ol
4. 1-Bromo-4-methyl-5-chorohexan-3-ol
Subtopic: Nomenclature |
75%
From NCERT
NEET - 2022
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Match each item in Column I with one in Column II and select the correct match from the codes given
| List-I | List-II | ||
| (a) | Separation of aniline-water mixture | (i) | Fractional distillation |
| (b) | Separation of aniline-chloroform mixture | (ii) | Distillation under reduced pressure |
| (c) | Separation of glycerol from spent-lye | (iii) | Distillation |
| (d) | Separation of different fractions of crude oil | (iv) | Steam distillation |
Codes:
| (a) | (b) | (c) | (d) | |
| 1. | (i) | (iii) | (ii) | (iv) |
| 2. | (iv) | (i) | (iii) | (ii) |
| 3. | (iv) | (ii) | (iii) | (i) |
| 4. | (iv) | (iii) | (ii) | (i) |
Subtopic: Purification of Organic Compounds |
74%
From NCERT
NEET - 2022
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The type of isomer shown by the following compounds is:
1. Geometrical isomers
2. Positional isomers
3. Optical isomers
4. Functional group isomers
1. Geometrical isomers
2. Positional isomers
3. Optical isomers
4. Functional group isomers
Subtopic: Structural Isomers |
71%
From NCERT
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Among (a)-column chromatography; (b)-paper chromatography and (c)-thin layer chromatography, an example of partition chromatography is:
Choose the correct option from the options given below:
Choose the correct option from the options given below:
| 1. | (a) and (b) only |
| 2. | (b) and (c) only |
| 3. | (b) only |
| 4. | (c) only |
Subtopic: Qualitative Analysis of Organic Compounds |
66%
From NCERT
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What is the hybridization shown by C1 and C2 carbons, respectively in the given compound?
\(\mathrm{ OHC-CH=CH-{^2}CH_2-{^1}COOCH_3}\)
\(\mathrm{ OHC-CH=CH-{^2}CH_2-{^1}COOCH_3}\)
| 1. | sp2 and sp3 | 2. | sp2 and sp2 |
| 3. | sp3 and sp2 | 4. | sp3 and sp3 |
Subtopic: Hybridisation & Structure of Carbon Compounds |
63%
From NCERT
NEET - 2022
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Select the correct option based on the statements below:
| Assertion (A): | Chlorine is an electron-withdrawing group, yet it exhibits ortho- and para-directing behavior in electrophilic aromatic substitution. |
| Reason (R): | Inductive effect of chlorine destabilises the intermediate carbocation formed during the electrophilic substitution, however due to the more pronounced resonance effect, the halogen stabilises the carbocation at ortho and para positions. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Electron Displacement Effects |
78%
From NCERT
NEET - 2022
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Subtopic: Reaction Intermediates ; Preparation & Properties |
78%
From NCERT
NEET - 2022
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