The compound that will undergo \(S_N~^1\) reaction with the fastest rate is  
1. 2.
3. 4.
Subtopic:  Mechanism of Reactions |
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NEET - 2024
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Major products A and B formed in the following reaction sequence, are 


 
1.
2.
3.
4.

 
Subtopic:  Chemical Properties |
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NEET - 2024
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\(\text{CCl}_2\text{F}_2\)is one of the most common haloalkanes used in industries. The reaction through which it is manufactured from tetrachloromethane is called:

1. Finkelstein reaction
2. Sandmeyer's reaction
3. Swarts reaction
4. Wurtz-Fittig reaction
Subtopic:  Chemical Properties |
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The most preferred method for the preparation of pure alkyl chlorides from alcohols is:

1. \(\mathrm{R}-\mathrm{OH}+\mathrm{HCl} \xrightarrow{\mathrm{ZnCl}_2} \mathrm{R}-\mathrm{Cl}+\mathrm{H}_2 \mathrm{O}\)
2. \(\mathrm{R}-\mathrm{OH}+\mathrm{PCl}_5 \rightarrow \mathrm{R}-\mathrm{Cl}+\mathrm{POCl}_3+\mathrm{HCl}\)
3. \(\mathrm{R}-\mathrm{OH}+\mathrm{SOCl}_2 \rightarrow \mathrm{R}-\mathrm{Cl}+\mathrm{SO}_2+\mathrm{HCl}\)
4. \(\mathrm{R}-\mathrm{OH}+\mathrm{PCl}_3 \rightarrow \mathrm{R}-\mathrm{Cl}+\mathrm{H}_3 \mathrm{PO}_3\)
Subtopic:  Introduction and Physical Properties |
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NEET - 2024
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The following compound would be classified as:


 
1. Vinylic halide 2. Benzylic halide
3. Aryl halide 4. Allylic halide
Subtopic:  Introduction and Physical Properties |
 67%
From NCERT
NEET - 2023
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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 |
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NEET - 2023
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A reaction among the following can generate 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: 
1. (D) only  2. (C) and (D) only  
3. (B) only  4. (A) and (B) only 
Subtopic:  Chemical Properties |
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NEET - 2023
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Identify 'X' in the following reaction.
1. 2.
3. 4.
Subtopic:  Chemical Properties |
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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 |
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NEET - 2022
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Identify the statement that is incorrect regarding chirality:
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 |
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NEET - 2022
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