Q. No.
Subtopic: Â Chemical Properties |
 68%
From NCERT
NEET - 2024
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The products A and B obtained in the following reactions, respectively, are:
\( \begin{aligned} & 3 \mathrm{ROH}+\mathrm{PCl}_3 \rightarrow 3 \mathrm{RCl}+\mathrm{A} \\ & \mathrm{ROH}+\mathrm{PCl}_5 \rightarrow \mathrm{RCl}+\mathrm{HCl}+\mathrm{B} \end{aligned} \)
1. \(\mathrm{POCl}_3~ and~ \mathrm{H}_3 \mathrm{PO}_4 \)
2. \(\mathrm{H}_3 \mathrm{PO}_4~ and ~\mathrm{POCl}_3 \)
3. \(\mathrm{H}_3 \mathrm{PO}_3~and ~\mathrm{POCl}_3 \)
4. \(\mathrm{POCl}_3~and ~\mathrm{H}_3 \mathrm{PO}_3\)
\( \begin{aligned} & 3 \mathrm{ROH}+\mathrm{PCl}_3 \rightarrow 3 \mathrm{RCl}+\mathrm{A} \\ & \mathrm{ROH}+\mathrm{PCl}_5 \rightarrow \mathrm{RCl}+\mathrm{HCl}+\mathrm{B} \end{aligned} \)
1. \(\mathrm{POCl}_3~ and~ \mathrm{H}_3 \mathrm{PO}_4 \)
2. \(\mathrm{H}_3 \mathrm{PO}_4~ and ~\mathrm{POCl}_3 \)
3. \(\mathrm{H}_3 \mathrm{PO}_3~and ~\mathrm{POCl}_3 \)
4. \(\mathrm{POCl}_3~and ~\mathrm{H}_3 \mathrm{PO}_3\)
Subtopic: Â Chemical Properties |
 70%
From NCERT
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
1. Finkelstein reaction
2. Sandmeyer's reaction
3. Swarts reaction
4. Wurtz-Fittig reaction
Subtopic: Â Chemical Properties |
 80%
From NCERT
NEET - 2024
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The major product D formed in the following reaction sequence is:
| 1. |  |
2. |  |
| 3. | \(\mathrm{CH_3CH_2OH}\) | 4. | \(\mathrm{CH_3CH_2Cl}\) |
Subtopic: Â Chemical Properties |
 68%
From NCERT
NEET - 2024
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The following reaction method
is not suitable for the preparation of the corresponding haloarene products, due to the high reactivity of halogen, when X is:
1. F
2. I
3. Cl
4. Br
is not suitable for the preparation of the corresponding haloarene products, due to the high reactivity of halogen, when X is:
1. F
2. I
3. Cl
4. Br
Subtopic: Â Chemical Properties |
 81%
From NCERT
NEET - 2024
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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: Â Chemical Properties |
 55%
From NCERT
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:
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: Â Chemical Properties |
 76%
From NCERT
NEET - 2023
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Subtopic: Â Chemical Properties |
 58%
From NCERT
NEET - 2023
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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: Â Chemical Properties |
 77%
From NCERT
NEET - 2022
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Subtopic: Â Chemical Properties |
 80%
From NCERT
NEET - 2022
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