90862
Identify the compound $(B)$ in given reaction. $\mathrm{CH}_{3} \mathrm{Cl} \stackrel{\mathrm{KCN}}{\longrightarrow}[\mathrm{A}] \stackrel{\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}}{\longrightarrow}[\mathrm{B}]$
1 $\mathrm{CH}_{3} \mathrm{NH}_{2}$
2 $\mathrm{HCOOH}$
3 $\mathrm{CH}_{3} \mathrm{COOH}$
4 $\mathrm{CH}_{3} \mathrm{COCH}_{3}$
Explanation:
Shift-I]**
HALOALKANES AND HALOARENES
90865
Among the following compounds, which one has the shortest $\mathrm{C}-\mathrm{CI}$ bond?
1
2
3
4
Explanation:
$\mathrm{C}-\mathrm{Cl}$ bond is shortest due to resonance of lone pair i.e. partial double bond character arises on $\mathrm{C}$ $\mathrm{Cl}$ bond. Hence, in option (c) $\mathrm{C}-\mathrm{Cl}$ bond length is least.
**[JEE Main-2020
HALOALKANES AND HALOARENES
90867
Which of the following alkane cannot be made in good yield by Wurtz reaction?
1 n-Hexane
2 2, 3-Dimethylbutane
3 $\mathrm{n}$ - Heptane
4 n - Butane
Explanation:
n-Heptane can not be made in good yield using wurtz reaction since it is asymmetrical alkane.
**[NEET-2020]**
HALOALKANES AND HALOARENES
90872
Which of the following halide undergoes hydrolysis on warming with water/aqueous $\mathrm{NaOH}$ ?
1
2
3
4
Explanation:
$\mathrm{NO}_{2}$ group is a electron withdrawing group at ortho and para position increases reactivity towards nucleophilic substitution reaction increases. Hence, the option (d) is correct.
90862
Identify the compound $(B)$ in given reaction. $\mathrm{CH}_{3} \mathrm{Cl} \stackrel{\mathrm{KCN}}{\longrightarrow}[\mathrm{A}] \stackrel{\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}}{\longrightarrow}[\mathrm{B}]$
1 $\mathrm{CH}_{3} \mathrm{NH}_{2}$
2 $\mathrm{HCOOH}$
3 $\mathrm{CH}_{3} \mathrm{COOH}$
4 $\mathrm{CH}_{3} \mathrm{COCH}_{3}$
Explanation:
Shift-I]**
HALOALKANES AND HALOARENES
90865
Among the following compounds, which one has the shortest $\mathrm{C}-\mathrm{CI}$ bond?
1
2
3
4
Explanation:
$\mathrm{C}-\mathrm{Cl}$ bond is shortest due to resonance of lone pair i.e. partial double bond character arises on $\mathrm{C}$ $\mathrm{Cl}$ bond. Hence, in option (c) $\mathrm{C}-\mathrm{Cl}$ bond length is least.
**[JEE Main-2020
HALOALKANES AND HALOARENES
90867
Which of the following alkane cannot be made in good yield by Wurtz reaction?
1 n-Hexane
2 2, 3-Dimethylbutane
3 $\mathrm{n}$ - Heptane
4 n - Butane
Explanation:
n-Heptane can not be made in good yield using wurtz reaction since it is asymmetrical alkane.
**[NEET-2020]**
HALOALKANES AND HALOARENES
90872
Which of the following halide undergoes hydrolysis on warming with water/aqueous $\mathrm{NaOH}$ ?
1
2
3
4
Explanation:
$\mathrm{NO}_{2}$ group is a electron withdrawing group at ortho and para position increases reactivity towards nucleophilic substitution reaction increases. Hence, the option (d) is correct.
90862
Identify the compound $(B)$ in given reaction. $\mathrm{CH}_{3} \mathrm{Cl} \stackrel{\mathrm{KCN}}{\longrightarrow}[\mathrm{A}] \stackrel{\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}}{\longrightarrow}[\mathrm{B}]$
1 $\mathrm{CH}_{3} \mathrm{NH}_{2}$
2 $\mathrm{HCOOH}$
3 $\mathrm{CH}_{3} \mathrm{COOH}$
4 $\mathrm{CH}_{3} \mathrm{COCH}_{3}$
Explanation:
Shift-I]**
HALOALKANES AND HALOARENES
90865
Among the following compounds, which one has the shortest $\mathrm{C}-\mathrm{CI}$ bond?
1
2
3
4
Explanation:
$\mathrm{C}-\mathrm{Cl}$ bond is shortest due to resonance of lone pair i.e. partial double bond character arises on $\mathrm{C}$ $\mathrm{Cl}$ bond. Hence, in option (c) $\mathrm{C}-\mathrm{Cl}$ bond length is least.
**[JEE Main-2020
HALOALKANES AND HALOARENES
90867
Which of the following alkane cannot be made in good yield by Wurtz reaction?
1 n-Hexane
2 2, 3-Dimethylbutane
3 $\mathrm{n}$ - Heptane
4 n - Butane
Explanation:
n-Heptane can not be made in good yield using wurtz reaction since it is asymmetrical alkane.
**[NEET-2020]**
HALOALKANES AND HALOARENES
90872
Which of the following halide undergoes hydrolysis on warming with water/aqueous $\mathrm{NaOH}$ ?
1
2
3
4
Explanation:
$\mathrm{NO}_{2}$ group is a electron withdrawing group at ortho and para position increases reactivity towards nucleophilic substitution reaction increases. Hence, the option (d) is correct.
90862
Identify the compound $(B)$ in given reaction. $\mathrm{CH}_{3} \mathrm{Cl} \stackrel{\mathrm{KCN}}{\longrightarrow}[\mathrm{A}] \stackrel{\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}}{\longrightarrow}[\mathrm{B}]$
1 $\mathrm{CH}_{3} \mathrm{NH}_{2}$
2 $\mathrm{HCOOH}$
3 $\mathrm{CH}_{3} \mathrm{COOH}$
4 $\mathrm{CH}_{3} \mathrm{COCH}_{3}$
Explanation:
Shift-I]**
HALOALKANES AND HALOARENES
90865
Among the following compounds, which one has the shortest $\mathrm{C}-\mathrm{CI}$ bond?
1
2
3
4
Explanation:
$\mathrm{C}-\mathrm{Cl}$ bond is shortest due to resonance of lone pair i.e. partial double bond character arises on $\mathrm{C}$ $\mathrm{Cl}$ bond. Hence, in option (c) $\mathrm{C}-\mathrm{Cl}$ bond length is least.
**[JEE Main-2020
HALOALKANES AND HALOARENES
90867
Which of the following alkane cannot be made in good yield by Wurtz reaction?
1 n-Hexane
2 2, 3-Dimethylbutane
3 $\mathrm{n}$ - Heptane
4 n - Butane
Explanation:
n-Heptane can not be made in good yield using wurtz reaction since it is asymmetrical alkane.
**[NEET-2020]**
HALOALKANES AND HALOARENES
90872
Which of the following halide undergoes hydrolysis on warming with water/aqueous $\mathrm{NaOH}$ ?
1
2
3
4
Explanation:
$\mathrm{NO}_{2}$ group is a electron withdrawing group at ortho and para position increases reactivity towards nucleophilic substitution reaction increases. Hence, the option (d) is correct.
