: In Friedel-Craft reaction, toluene can be prepared by methyl chloride on presence of anhydrous lewis is acid to give toulene.
NEET-2000
Hydrocarbons
230252
Which one of the these is not compatible with arenes?
1 Electrophilic additions
2 Delocalisation of $\pi$-electrons
3 Greater stability
4 Resonance
Explanation:
: Arenes undergoes electrophilic substitution reaction. Arenes do not give electrophilic addition reaction in normal state due to resonance stabilization. Benzene is a resonance hydride of two structure and greater stability of benzene is due to delocalization of $\pi$ electron.
NEET-1998
Hydrocarbons
230253
Using anhydrous $\mathrm{AlCl}_3$ as catalyst, which one of the following reactions produces ethylbenzene ( $\mathrm{PhEt})$ ?
: Using anhydrous $\mathrm{AlCl}_3$ as catalyst, $\mathrm{CH}_2=\mathrm{CH}_2+\mathrm{C}_6 \mathrm{H}_6$ react with to produces a ethylbenzene $(\mathrm{PhEt})$.
NEET-2004
Hydrocarbons
230254
Among the following compounds the one that is most reactive towards electrophilic nitration is
1 Benzoic acid
2 Nitrobenzene
3 Toluene
4 Benzene
Explanation:
: Toluene have most reactive towards electrophilic nitration because in toluene $\mathrm{CH}_3$ group has $+\mathrm{R}$ effect on benzene is more reactive towards on benzene is more reactive towards electrophilic substitution reaction.
NEET-2012
Hydrocarbons
230256
Which of the following compounds will not undergo Friedel-Crafts reaction easily?
1 Nitrobenzene
2 Toluene
3 Cumene
4 Xylene
Explanation:
: In Friedel-Crafts reaction, involving an electrophilic aromatic substitution is used to attach a substituent to aromatic rings is Friedel-crafts reaction, which reaction are two type-alkylation and acylation. In this reaction aluminium chloride is used as a catalyst and involves the replacement of hydrogen atom with electrophile in an aromatic ring. Nitrobenzene does not undergo Friedel-Craft reaction because nitro group in nitro benzene is a strong withdrawing group and this group repels the electrophile from it.
: In Friedel-Craft reaction, toluene can be prepared by methyl chloride on presence of anhydrous lewis is acid to give toulene.
NEET-2000
Hydrocarbons
230252
Which one of the these is not compatible with arenes?
1 Electrophilic additions
2 Delocalisation of $\pi$-electrons
3 Greater stability
4 Resonance
Explanation:
: Arenes undergoes electrophilic substitution reaction. Arenes do not give electrophilic addition reaction in normal state due to resonance stabilization. Benzene is a resonance hydride of two structure and greater stability of benzene is due to delocalization of $\pi$ electron.
NEET-1998
Hydrocarbons
230253
Using anhydrous $\mathrm{AlCl}_3$ as catalyst, which one of the following reactions produces ethylbenzene ( $\mathrm{PhEt})$ ?
: Using anhydrous $\mathrm{AlCl}_3$ as catalyst, $\mathrm{CH}_2=\mathrm{CH}_2+\mathrm{C}_6 \mathrm{H}_6$ react with to produces a ethylbenzene $(\mathrm{PhEt})$.
NEET-2004
Hydrocarbons
230254
Among the following compounds the one that is most reactive towards electrophilic nitration is
1 Benzoic acid
2 Nitrobenzene
3 Toluene
4 Benzene
Explanation:
: Toluene have most reactive towards electrophilic nitration because in toluene $\mathrm{CH}_3$ group has $+\mathrm{R}$ effect on benzene is more reactive towards on benzene is more reactive towards electrophilic substitution reaction.
NEET-2012
Hydrocarbons
230256
Which of the following compounds will not undergo Friedel-Crafts reaction easily?
1 Nitrobenzene
2 Toluene
3 Cumene
4 Xylene
Explanation:
: In Friedel-Crafts reaction, involving an electrophilic aromatic substitution is used to attach a substituent to aromatic rings is Friedel-crafts reaction, which reaction are two type-alkylation and acylation. In this reaction aluminium chloride is used as a catalyst and involves the replacement of hydrogen atom with electrophile in an aromatic ring. Nitrobenzene does not undergo Friedel-Craft reaction because nitro group in nitro benzene is a strong withdrawing group and this group repels the electrophile from it.
: In Friedel-Craft reaction, toluene can be prepared by methyl chloride on presence of anhydrous lewis is acid to give toulene.
NEET-2000
Hydrocarbons
230252
Which one of the these is not compatible with arenes?
1 Electrophilic additions
2 Delocalisation of $\pi$-electrons
3 Greater stability
4 Resonance
Explanation:
: Arenes undergoes electrophilic substitution reaction. Arenes do not give electrophilic addition reaction in normal state due to resonance stabilization. Benzene is a resonance hydride of two structure and greater stability of benzene is due to delocalization of $\pi$ electron.
NEET-1998
Hydrocarbons
230253
Using anhydrous $\mathrm{AlCl}_3$ as catalyst, which one of the following reactions produces ethylbenzene ( $\mathrm{PhEt})$ ?
: Using anhydrous $\mathrm{AlCl}_3$ as catalyst, $\mathrm{CH}_2=\mathrm{CH}_2+\mathrm{C}_6 \mathrm{H}_6$ react with to produces a ethylbenzene $(\mathrm{PhEt})$.
NEET-2004
Hydrocarbons
230254
Among the following compounds the one that is most reactive towards electrophilic nitration is
1 Benzoic acid
2 Nitrobenzene
3 Toluene
4 Benzene
Explanation:
: Toluene have most reactive towards electrophilic nitration because in toluene $\mathrm{CH}_3$ group has $+\mathrm{R}$ effect on benzene is more reactive towards on benzene is more reactive towards electrophilic substitution reaction.
NEET-2012
Hydrocarbons
230256
Which of the following compounds will not undergo Friedel-Crafts reaction easily?
1 Nitrobenzene
2 Toluene
3 Cumene
4 Xylene
Explanation:
: In Friedel-Crafts reaction, involving an electrophilic aromatic substitution is used to attach a substituent to aromatic rings is Friedel-crafts reaction, which reaction are two type-alkylation and acylation. In this reaction aluminium chloride is used as a catalyst and involves the replacement of hydrogen atom with electrophile in an aromatic ring. Nitrobenzene does not undergo Friedel-Craft reaction because nitro group in nitro benzene is a strong withdrawing group and this group repels the electrophile from it.
: In Friedel-Craft reaction, toluene can be prepared by methyl chloride on presence of anhydrous lewis is acid to give toulene.
NEET-2000
Hydrocarbons
230252
Which one of the these is not compatible with arenes?
1 Electrophilic additions
2 Delocalisation of $\pi$-electrons
3 Greater stability
4 Resonance
Explanation:
: Arenes undergoes electrophilic substitution reaction. Arenes do not give electrophilic addition reaction in normal state due to resonance stabilization. Benzene is a resonance hydride of two structure and greater stability of benzene is due to delocalization of $\pi$ electron.
NEET-1998
Hydrocarbons
230253
Using anhydrous $\mathrm{AlCl}_3$ as catalyst, which one of the following reactions produces ethylbenzene ( $\mathrm{PhEt})$ ?
: Using anhydrous $\mathrm{AlCl}_3$ as catalyst, $\mathrm{CH}_2=\mathrm{CH}_2+\mathrm{C}_6 \mathrm{H}_6$ react with to produces a ethylbenzene $(\mathrm{PhEt})$.
NEET-2004
Hydrocarbons
230254
Among the following compounds the one that is most reactive towards electrophilic nitration is
1 Benzoic acid
2 Nitrobenzene
3 Toluene
4 Benzene
Explanation:
: Toluene have most reactive towards electrophilic nitration because in toluene $\mathrm{CH}_3$ group has $+\mathrm{R}$ effect on benzene is more reactive towards on benzene is more reactive towards electrophilic substitution reaction.
NEET-2012
Hydrocarbons
230256
Which of the following compounds will not undergo Friedel-Crafts reaction easily?
1 Nitrobenzene
2 Toluene
3 Cumene
4 Xylene
Explanation:
: In Friedel-Crafts reaction, involving an electrophilic aromatic substitution is used to attach a substituent to aromatic rings is Friedel-crafts reaction, which reaction are two type-alkylation and acylation. In this reaction aluminium chloride is used as a catalyst and involves the replacement of hydrogen atom with electrophile in an aromatic ring. Nitrobenzene does not undergo Friedel-Craft reaction because nitro group in nitro benzene is a strong withdrawing group and this group repels the electrophile from it.
: In Friedel-Craft reaction, toluene can be prepared by methyl chloride on presence of anhydrous lewis is acid to give toulene.
NEET-2000
Hydrocarbons
230252
Which one of the these is not compatible with arenes?
1 Electrophilic additions
2 Delocalisation of $\pi$-electrons
3 Greater stability
4 Resonance
Explanation:
: Arenes undergoes electrophilic substitution reaction. Arenes do not give electrophilic addition reaction in normal state due to resonance stabilization. Benzene is a resonance hydride of two structure and greater stability of benzene is due to delocalization of $\pi$ electron.
NEET-1998
Hydrocarbons
230253
Using anhydrous $\mathrm{AlCl}_3$ as catalyst, which one of the following reactions produces ethylbenzene ( $\mathrm{PhEt})$ ?
: Using anhydrous $\mathrm{AlCl}_3$ as catalyst, $\mathrm{CH}_2=\mathrm{CH}_2+\mathrm{C}_6 \mathrm{H}_6$ react with to produces a ethylbenzene $(\mathrm{PhEt})$.
NEET-2004
Hydrocarbons
230254
Among the following compounds the one that is most reactive towards electrophilic nitration is
1 Benzoic acid
2 Nitrobenzene
3 Toluene
4 Benzene
Explanation:
: Toluene have most reactive towards electrophilic nitration because in toluene $\mathrm{CH}_3$ group has $+\mathrm{R}$ effect on benzene is more reactive towards on benzene is more reactive towards electrophilic substitution reaction.
NEET-2012
Hydrocarbons
230256
Which of the following compounds will not undergo Friedel-Crafts reaction easily?
1 Nitrobenzene
2 Toluene
3 Cumene
4 Xylene
Explanation:
: In Friedel-Crafts reaction, involving an electrophilic aromatic substitution is used to attach a substituent to aromatic rings is Friedel-crafts reaction, which reaction are two type-alkylation and acylation. In this reaction aluminium chloride is used as a catalyst and involves the replacement of hydrogen atom with electrophile in an aromatic ring. Nitrobenzene does not undergo Friedel-Craft reaction because nitro group in nitro benzene is a strong withdrawing group and this group repels the electrophile from it.
