90905
Identify $\mathbf{X}$ in the following sequence of reactions.
1
2
3
4
Explanation:
This reaction is an example of Birch reduction so, the correct option is (b).
**[WB-JEE-2016]**
HALOALKANES AND HALOARENES
90908
Name the following reaction,
1 Swartz reaction
2 Frinkel-stein reaction
3 Wurtz reaction
4 Hell-Volhard Zelinsky reaction
Explanation:
Finkelstein reaction is a substitution reaction. It uses an alkyl halide exchange into another alkyl halide through a reaction where the metal halide salt is used. Reaction can be given- is a Finkelstein reaction.
**[GUJCET-2015]**
HALOALKANES AND HALOARENES
90901
The reactivity of alkyl bromides. I. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}\) II. III. IV. \(\mathrm{CH}_3 \mathrm{Br}\) towards iodide ion in dry acetone decrease in the order
1 IV $>$ I $>$ II $>$ III
2 I $>$ IV $>$ II $>$ III
3 III $>$ II $>$ I $>$ IV
4 III $>$ II $>$ IV $>$ I
Explanation:
The reactivity of alkyl bromides towards iodide ion in dry acetone reaction follow $\mathrm{S}_{\mathrm{N}} 2$ mechanism. In $\mathrm{S}_{\mathrm{N}} 2$ mechanism, less hindered are more reactive towards nucleophile (Iodide ion).
**[TS EAMCET-2017]**
HALOALKANES AND HALOARENES
90913
Which of the following pairs is/are correctly matched?
1 Only I
2 I and II
3 III and IV
4 I, II, III and IV
Explanation:
Here bond of silver (Ag) is covalent in nature. Halide bond of potassium cyanide $(\mathrm{KCN})$ is ionic in nature. So during bond formation with alkyl halide lone pair donar elements make bond. While during formation with "K" potassium loose electron.
NEET Test Series from KOTA - 10 Papers In MS WORD
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HALOALKANES AND HALOARENES
90905
Identify $\mathbf{X}$ in the following sequence of reactions.
1
2
3
4
Explanation:
This reaction is an example of Birch reduction so, the correct option is (b).
**[WB-JEE-2016]**
HALOALKANES AND HALOARENES
90908
Name the following reaction,
1 Swartz reaction
2 Frinkel-stein reaction
3 Wurtz reaction
4 Hell-Volhard Zelinsky reaction
Explanation:
Finkelstein reaction is a substitution reaction. It uses an alkyl halide exchange into another alkyl halide through a reaction where the metal halide salt is used. Reaction can be given- is a Finkelstein reaction.
**[GUJCET-2015]**
HALOALKANES AND HALOARENES
90901
The reactivity of alkyl bromides. I. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}\) II. III. IV. \(\mathrm{CH}_3 \mathrm{Br}\) towards iodide ion in dry acetone decrease in the order
1 IV $>$ I $>$ II $>$ III
2 I $>$ IV $>$ II $>$ III
3 III $>$ II $>$ I $>$ IV
4 III $>$ II $>$ IV $>$ I
Explanation:
The reactivity of alkyl bromides towards iodide ion in dry acetone reaction follow $\mathrm{S}_{\mathrm{N}} 2$ mechanism. In $\mathrm{S}_{\mathrm{N}} 2$ mechanism, less hindered are more reactive towards nucleophile (Iodide ion).
**[TS EAMCET-2017]**
HALOALKANES AND HALOARENES
90913
Which of the following pairs is/are correctly matched?
1 Only I
2 I and II
3 III and IV
4 I, II, III and IV
Explanation:
Here bond of silver (Ag) is covalent in nature. Halide bond of potassium cyanide $(\mathrm{KCN})$ is ionic in nature. So during bond formation with alkyl halide lone pair donar elements make bond. While during formation with "K" potassium loose electron.
90905
Identify $\mathbf{X}$ in the following sequence of reactions.
1
2
3
4
Explanation:
This reaction is an example of Birch reduction so, the correct option is (b).
**[WB-JEE-2016]**
HALOALKANES AND HALOARENES
90908
Name the following reaction,
1 Swartz reaction
2 Frinkel-stein reaction
3 Wurtz reaction
4 Hell-Volhard Zelinsky reaction
Explanation:
Finkelstein reaction is a substitution reaction. It uses an alkyl halide exchange into another alkyl halide through a reaction where the metal halide salt is used. Reaction can be given- is a Finkelstein reaction.
**[GUJCET-2015]**
HALOALKANES AND HALOARENES
90901
The reactivity of alkyl bromides. I. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}\) II. III. IV. \(\mathrm{CH}_3 \mathrm{Br}\) towards iodide ion in dry acetone decrease in the order
1 IV $>$ I $>$ II $>$ III
2 I $>$ IV $>$ II $>$ III
3 III $>$ II $>$ I $>$ IV
4 III $>$ II $>$ IV $>$ I
Explanation:
The reactivity of alkyl bromides towards iodide ion in dry acetone reaction follow $\mathrm{S}_{\mathrm{N}} 2$ mechanism. In $\mathrm{S}_{\mathrm{N}} 2$ mechanism, less hindered are more reactive towards nucleophile (Iodide ion).
**[TS EAMCET-2017]**
HALOALKANES AND HALOARENES
90913
Which of the following pairs is/are correctly matched?
1 Only I
2 I and II
3 III and IV
4 I, II, III and IV
Explanation:
Here bond of silver (Ag) is covalent in nature. Halide bond of potassium cyanide $(\mathrm{KCN})$ is ionic in nature. So during bond formation with alkyl halide lone pair donar elements make bond. While during formation with "K" potassium loose electron.
90905
Identify $\mathbf{X}$ in the following sequence of reactions.
1
2
3
4
Explanation:
This reaction is an example of Birch reduction so, the correct option is (b).
**[WB-JEE-2016]**
HALOALKANES AND HALOARENES
90908
Name the following reaction,
1 Swartz reaction
2 Frinkel-stein reaction
3 Wurtz reaction
4 Hell-Volhard Zelinsky reaction
Explanation:
Finkelstein reaction is a substitution reaction. It uses an alkyl halide exchange into another alkyl halide through a reaction where the metal halide salt is used. Reaction can be given- is a Finkelstein reaction.
**[GUJCET-2015]**
HALOALKANES AND HALOARENES
90901
The reactivity of alkyl bromides. I. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}\) II. III. IV. \(\mathrm{CH}_3 \mathrm{Br}\) towards iodide ion in dry acetone decrease in the order
1 IV $>$ I $>$ II $>$ III
2 I $>$ IV $>$ II $>$ III
3 III $>$ II $>$ I $>$ IV
4 III $>$ II $>$ IV $>$ I
Explanation:
The reactivity of alkyl bromides towards iodide ion in dry acetone reaction follow $\mathrm{S}_{\mathrm{N}} 2$ mechanism. In $\mathrm{S}_{\mathrm{N}} 2$ mechanism, less hindered are more reactive towards nucleophile (Iodide ion).
**[TS EAMCET-2017]**
HALOALKANES AND HALOARENES
90913
Which of the following pairs is/are correctly matched?
1 Only I
2 I and II
3 III and IV
4 I, II, III and IV
Explanation:
Here bond of silver (Ag) is covalent in nature. Halide bond of potassium cyanide $(\mathrm{KCN})$ is ionic in nature. So during bond formation with alkyl halide lone pair donar elements make bond. While during formation with "K" potassium loose electron.
