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Q. No.
Subtopic: Â Nomenclature |
 78%
From NCERT
NEET - 2021
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Subtopic: Â Structural Isomers |
 64%
From NCERT
NEET - 2021
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A liquid compound (x) can be purified by steam distillation only if it is:
1. Steam volatile, immiscible with water
2. Not steam volatile, miscible with water
3. Steam volatile, miscible with water
4. Not steam volatile, immiscible with water
Subtopic: Â Purification of Organic Compounds |
 66%
From NCERT
NEET - 2020
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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: Â Purification of Organic Compounds |
 61%
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: Â Nomenclature |
 73%
From NCERT
NEET - 2022
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Match list-I with list-II:
| 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 |
| (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: Â Purification of Organic Compounds |
 67%
From NCERT
NEET - 2022
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What is the hybridization shown by C1 and C2 carbons, respectively in the given compound?
\( OHC-CH=CH-{^2}CH_2-{^1}COOCH_3\)
\( OHC-CH=CH-{^2}CH_2-{^1}COOCH_3\)
| 1. | sp2 and sp3 | 2. | sp2 and sp2 |
| 3. | sp3 and sp2 | 4. | sp3 and sp3 |
Subtopic: Â Hybridisation & Structure of Carbon Compounds |
From NCERT
NEET - 2022
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Subtopic: Â Reaction Intermediates ; Preparation & Properties |
 74%
From NCERT
NEET - 2022
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In Lassaigne's extract of an organic compound both nitrogen and sulphur are present which gives blood red colour with \(Fe^{3+}\) due to the formation of-
1. \([\mathrm{Fe}(\mathrm{SCN})]^{2+} \)
2. \(\mathrm{Fe}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]_3 \cdot \times \mathrm{H}_2 \mathrm{O} \)
3. \(\mathrm{NaSCN} \)
4. \(\left[\mathrm{Fe}(\mathrm{CN})_5 \mathrm{NOS}\right]^{4-} \)
1. \([\mathrm{Fe}(\mathrm{SCN})]^{2+} \)
2. \(\mathrm{Fe}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]_3 \cdot \times \mathrm{H}_2 \mathrm{O} \)
3. \(\mathrm{NaSCN} \)
4. \(\left[\mathrm{Fe}(\mathrm{CN})_5 \mathrm{NOS}\right]^{4-} \)
Subtopic: Â Qualitative Analysis of Organic Compounds |
 58%
From NCERT
NEET - 2023
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The number of \(\sigma\) bonds, \(\pi\) bonds and lone pair of electrons in pyridine respectively are:
| 1. | 12, 2, 1 | 2. | 11, 2, 0 |
| 3. | 12, 3, 0 | 4. | 11, 3, 1 |
Subtopic: Â Hybridisation & Structure of Carbon Compounds |
 60%
From NCERT
NEET - 2023
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