NEET Test Series from KOTA - 10 Papers In MS WORD
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CHEMISTRY(KCET)
285341
The compound that reacts the fastest with sodium methoxide is
Ans:a
Exp:(a) Electron withdrawing groups \(\left(-\mathrm{NO}_2\right)\) increase the reactivity of the aryl halide \((-\mathrm{ArCl})\).
Hence, 2,4-dinitrochlorobenzene reacts fastest.
Explanation:
(a) Electron withdrawing groups \(\left(-\mathrm{NO}_2\right)\) increase the reactivity of the aryl halide \((-\mathrm{ArCl})\).
Hence, 2,4-dinitrochlorobenzene reacts fastest.
Karnataka CET 2014
CHEMISTRY(KCET)
285342
The correct statement is
1 cyclohexadiene and cyclohexene cannot be isolated with ease during controlled hydrogenation of benzene
2 one mole each of benzene and hydrogen when reacted gives \(1 / 3\) mole of cyclohexane and \(2 / 3\) mole unreacted hydrogen
3 hydrogenation of benzene to cyclohexane is an endothermic process
4 it is easier to hydrogenate benzene when compared to cyclohexene.
Explanation:
(a) During the hydrogenation of benzene, only cyclohexane can be isolated.
Benzene
Cyclohexane
On controlled hydrogenation of benzene with groupI metals ( \(\mathrm{Li}, \mathrm{Na}, \mathrm{K}\), etc.) and methanol (or ethanol) in liq. \(\mathrm{NH}_3\) it reduces into cyclohexadiene and cyclohexene which cannot be separated.
Cyclohexadiene
CHEMISTRY(KCET)
285326
The major product obtained when ethanol is heated with excess of conc.\(\mathrm{H}_2 \mathrm{SO}_4\) at 443 K is
285341
The compound that reacts the fastest with sodium methoxide is
Ans:a
Exp:(a) Electron withdrawing groups \(\left(-\mathrm{NO}_2\right)\) increase the reactivity of the aryl halide \((-\mathrm{ArCl})\).
Hence, 2,4-dinitrochlorobenzene reacts fastest.
Explanation:
(a) Electron withdrawing groups \(\left(-\mathrm{NO}_2\right)\) increase the reactivity of the aryl halide \((-\mathrm{ArCl})\).
Hence, 2,4-dinitrochlorobenzene reacts fastest.
Karnataka CET 2014
CHEMISTRY(KCET)
285342
The correct statement is
1 cyclohexadiene and cyclohexene cannot be isolated with ease during controlled hydrogenation of benzene
2 one mole each of benzene and hydrogen when reacted gives \(1 / 3\) mole of cyclohexane and \(2 / 3\) mole unreacted hydrogen
3 hydrogenation of benzene to cyclohexane is an endothermic process
4 it is easier to hydrogenate benzene when compared to cyclohexene.
Explanation:
(a) During the hydrogenation of benzene, only cyclohexane can be isolated.
Benzene
Cyclohexane
On controlled hydrogenation of benzene with groupI metals ( \(\mathrm{Li}, \mathrm{Na}, \mathrm{K}\), etc.) and methanol (or ethanol) in liq. \(\mathrm{NH}_3\) it reduces into cyclohexadiene and cyclohexene which cannot be separated.
Cyclohexadiene
CHEMISTRY(KCET)
285326
The major product obtained when ethanol is heated with excess of conc.\(\mathrm{H}_2 \mathrm{SO}_4\) at 443 K is
285341
The compound that reacts the fastest with sodium methoxide is
Ans:a
Exp:(a) Electron withdrawing groups \(\left(-\mathrm{NO}_2\right)\) increase the reactivity of the aryl halide \((-\mathrm{ArCl})\).
Hence, 2,4-dinitrochlorobenzene reacts fastest.
Explanation:
(a) Electron withdrawing groups \(\left(-\mathrm{NO}_2\right)\) increase the reactivity of the aryl halide \((-\mathrm{ArCl})\).
Hence, 2,4-dinitrochlorobenzene reacts fastest.
Karnataka CET 2014
CHEMISTRY(KCET)
285342
The correct statement is
1 cyclohexadiene and cyclohexene cannot be isolated with ease during controlled hydrogenation of benzene
2 one mole each of benzene and hydrogen when reacted gives \(1 / 3\) mole of cyclohexane and \(2 / 3\) mole unreacted hydrogen
3 hydrogenation of benzene to cyclohexane is an endothermic process
4 it is easier to hydrogenate benzene when compared to cyclohexene.
Explanation:
(a) During the hydrogenation of benzene, only cyclohexane can be isolated.
Benzene
Cyclohexane
On controlled hydrogenation of benzene with groupI metals ( \(\mathrm{Li}, \mathrm{Na}, \mathrm{K}\), etc.) and methanol (or ethanol) in liq. \(\mathrm{NH}_3\) it reduces into cyclohexadiene and cyclohexene which cannot be separated.
Cyclohexadiene
CHEMISTRY(KCET)
285326
The major product obtained when ethanol is heated with excess of conc.\(\mathrm{H}_2 \mathrm{SO}_4\) at 443 K is
285341
The compound that reacts the fastest with sodium methoxide is
Ans:a
Exp:(a) Electron withdrawing groups \(\left(-\mathrm{NO}_2\right)\) increase the reactivity of the aryl halide \((-\mathrm{ArCl})\).
Hence, 2,4-dinitrochlorobenzene reacts fastest.
Explanation:
(a) Electron withdrawing groups \(\left(-\mathrm{NO}_2\right)\) increase the reactivity of the aryl halide \((-\mathrm{ArCl})\).
Hence, 2,4-dinitrochlorobenzene reacts fastest.
Karnataka CET 2014
CHEMISTRY(KCET)
285342
The correct statement is
1 cyclohexadiene and cyclohexene cannot be isolated with ease during controlled hydrogenation of benzene
2 one mole each of benzene and hydrogen when reacted gives \(1 / 3\) mole of cyclohexane and \(2 / 3\) mole unreacted hydrogen
3 hydrogenation of benzene to cyclohexane is an endothermic process
4 it is easier to hydrogenate benzene when compared to cyclohexene.
Explanation:
(a) During the hydrogenation of benzene, only cyclohexane can be isolated.
Benzene
Cyclohexane
On controlled hydrogenation of benzene with groupI metals ( \(\mathrm{Li}, \mathrm{Na}, \mathrm{K}\), etc.) and methanol (or ethanol) in liq. \(\mathrm{NH}_3\) it reduces into cyclohexadiene and cyclohexene which cannot be separated.
Cyclohexadiene
CHEMISTRY(KCET)
285326
The major product obtained when ethanol is heated with excess of conc.\(\mathrm{H}_2 \mathrm{SO}_4\) at 443 K is
