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Q. No.The given compound
is an example of:
is an example of:
| 1. | Vinylic halide | 2. | Benzylic halide |
| 3. | Aryl halide | 4. | Allylic halide |
Subtopic: Physical Properties |
64%
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The correct order for the rate of \(\alpha\) , \(\beta\)-dehydrohalogenation for the following compounds is:
(i)  |
(ii)  |
(iii)  |
| 1. | (i) < (ii) < (iii) | 2. | (ii) < (i) < (iii) |
| 3. | (iii) < (ii) < (i) | 4. | (ii) < (iii) < (i) |
Subtopic: Chemical Properties |
NEET - 2023
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Which amongst the following reactions of alkyl halides produces isonitriles as a major product?
A. \(R-X + HCN \rightarrow \)
B. \(R-X + AgCN \rightarrow \)
C. \(R-X + KCN \rightarrow \)
D. \(R-X + NaCN \xrightarrow [C_2H_5OH] {H_2O} \)
Choose the most appropriate answer from the options given below:
A. \(R-X + HCN \rightarrow \)
B. \(R-X + AgCN \rightarrow \)
C. \(R-X + KCN \rightarrow \)
D. \(R-X + NaCN \xrightarrow [C_2H_5OH] {H_2O} \)
Choose the most appropriate answer from the options given below:
| 1. | (D) only | 2. | (C) and (D) only |
| 3. | (B) only | 4. | (A) and (B) only |
Subtopic: Chemical Properties |
71%
From NCERT
NEET - 2023
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Subtopic: Chemical Properties |
53%
NEET - 2023
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Which of the following is suitable to synthesize chlorobenzene?
| 1. |  |
| 2. | Benzene, Cl2, anhydrous FeCl3 |
| 3. | Phenol, NaNO2, HCl, CuCl |
| 4. |  |
Subtopic: Haloarenes: Directive Influence of Halogen |
68%
From NCERT
NEET - 2022
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The incorrect statement regarding chirality is:
| 1. | A racemic mixture shows zero optical rotation |
| 2. | SN1 reaction yields a 1:1 mixture of both enantiomers |
| 3. | The product obtained by SN2 reaction of haloalkane having chirality at the reactive site shows the inversion of configuration |
| 4. | Enantiomers are superimposable mirror images on each other |
Subtopic: Chemical Properties |
73%
From NCERT
NEET - 2022
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The correct reaction among the following is:
| 1. |  |
| 2. |  |
| 3. | \(2CH_3CH_2Br\xrightarrow[dry~ether]{Mg}CH_3CH_2CH_2CH_3\) |
| 4. | \(2CH_3CH_2Br\xrightarrow[Ethanol]{Na}CH_3CH_2CH_2CH_3\) |
Subtopic: Chemical Properties |
77%
From NCERT
NEET - 2022
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The product formed in the following reaction sequence is:
| 1. |  |
| 2. | \(CH_3-CH=CH-CH_3 \) |
| 3. | \(CH_3 -CH_2 -CH = CH_2 \) |
| 4. | \(CH_3 -CH_2 -CH_2 -CH_2 -OH \) |
Subtopic: Chemical Properties |
58%
From NCERT
NEET - 2022
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Predict the order of reactivity of the following four isomers towards SN2 reaction.
(I) CH3CH2CH2CH2Cl
(II) CH3CH2CH(Cl)CH3
(III) (CH3)2CHCH2Cl
(IV) (CH3)3CCl
(I) CH3CH2CH2CH2Cl
(II) CH3CH2CH(Cl)CH3
(III) (CH3)2CHCH2Cl
(IV) (CH3)3CCl
| 1. | (IV) > (III) > (II) > (I) |
| 2. | (I) > (II) > (III) > (IV) |
| 3. | (I) > (III) > (II) > (IV) |
| 4. | (IV) > (II) > (III) > (I) |
Subtopic: Chemical Properties |
64%
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 but it is ortho, para directing 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: Haloarenes: Directive Influence of Halogen |
75%
From NCERT
NEET - 2022
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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