322830
Reactivity towards nucleophilic substitution among given compounds.
1 (i) \( < \) (ii) \( < \) (iii)
2 (i) \( < \) (iii) \( < \) (ii)
3 (iii) \( < \) (ii) \( < \) (i)
4 (ii) \( < \) (iii) \( < \) (i)
Explanation:
Nucleophilic aromatic substitution reactions are favoured by EWG preferably at \(\mathrm{O} / \mathrm{P}\) positions. So, II > III > I (reactivity order).
CHXII10:HALOALKANES AND HALOARENES
322831
Statement A : Chlorobenzene is reactive towards Aromatic nucleophilic substitution reaction than o-Nitrochlorobenzene. Statement B : \(-\mathrm{NO}_{2}\) is stronger EWG than \(-\mathrm{Cl}\)
1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Chlorobenzene is less reactive than onitrochlorobenzene towards ArSN reactions.
CHXII10:HALOALKANES AND HALOARENES
322832
Statement A : Chlorine is an ortho-para directing group in electrophilic aromatic substitution reaction. Statement B : Chlorine is an electron withdrawing group.
1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Chlorine is an electron withdrawing group, yet it acts as ortho, para-directing group in electrophilic aromatic substitution reaction due to its \(+\mathrm{R}\)-effect.
322834
Chlorobenzene is ____ reactive than benzene towards electrophilic substitution and directs the incoming electrophile to the ____ position.
1 more, ortho/para
2 less, ortho/para
3 more, meta
4 less, meta
Explanation:
ortho-para directing groups activate the benzene ring towards electrophilic substitution while meta directing groups deactivate the benzene ring towards electrophilic substitution. \(-\mathrm{F},-\mathrm{Cl}\), \(-\mathrm{Br}\) and -I (i.e. halogens) are exceptions to the above rule. These groups are o-, p-directing but deactivate the benzene ring.
322830
Reactivity towards nucleophilic substitution among given compounds.
1 (i) \( < \) (ii) \( < \) (iii)
2 (i) \( < \) (iii) \( < \) (ii)
3 (iii) \( < \) (ii) \( < \) (i)
4 (ii) \( < \) (iii) \( < \) (i)
Explanation:
Nucleophilic aromatic substitution reactions are favoured by EWG preferably at \(\mathrm{O} / \mathrm{P}\) positions. So, II > III > I (reactivity order).
CHXII10:HALOALKANES AND HALOARENES
322831
Statement A : Chlorobenzene is reactive towards Aromatic nucleophilic substitution reaction than o-Nitrochlorobenzene. Statement B : \(-\mathrm{NO}_{2}\) is stronger EWG than \(-\mathrm{Cl}\)
1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Chlorobenzene is less reactive than onitrochlorobenzene towards ArSN reactions.
CHXII10:HALOALKANES AND HALOARENES
322832
Statement A : Chlorine is an ortho-para directing group in electrophilic aromatic substitution reaction. Statement B : Chlorine is an electron withdrawing group.
1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Chlorine is an electron withdrawing group, yet it acts as ortho, para-directing group in electrophilic aromatic substitution reaction due to its \(+\mathrm{R}\)-effect.
322834
Chlorobenzene is ____ reactive than benzene towards electrophilic substitution and directs the incoming electrophile to the ____ position.
1 more, ortho/para
2 less, ortho/para
3 more, meta
4 less, meta
Explanation:
ortho-para directing groups activate the benzene ring towards electrophilic substitution while meta directing groups deactivate the benzene ring towards electrophilic substitution. \(-\mathrm{F},-\mathrm{Cl}\), \(-\mathrm{Br}\) and -I (i.e. halogens) are exceptions to the above rule. These groups are o-, p-directing but deactivate the benzene ring.
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CHXII10:HALOALKANES AND HALOARENES
322830
Reactivity towards nucleophilic substitution among given compounds.
1 (i) \( < \) (ii) \( < \) (iii)
2 (i) \( < \) (iii) \( < \) (ii)
3 (iii) \( < \) (ii) \( < \) (i)
4 (ii) \( < \) (iii) \( < \) (i)
Explanation:
Nucleophilic aromatic substitution reactions are favoured by EWG preferably at \(\mathrm{O} / \mathrm{P}\) positions. So, II > III > I (reactivity order).
CHXII10:HALOALKANES AND HALOARENES
322831
Statement A : Chlorobenzene is reactive towards Aromatic nucleophilic substitution reaction than o-Nitrochlorobenzene. Statement B : \(-\mathrm{NO}_{2}\) is stronger EWG than \(-\mathrm{Cl}\)
1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Chlorobenzene is less reactive than onitrochlorobenzene towards ArSN reactions.
CHXII10:HALOALKANES AND HALOARENES
322832
Statement A : Chlorine is an ortho-para directing group in electrophilic aromatic substitution reaction. Statement B : Chlorine is an electron withdrawing group.
1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Chlorine is an electron withdrawing group, yet it acts as ortho, para-directing group in electrophilic aromatic substitution reaction due to its \(+\mathrm{R}\)-effect.
322834
Chlorobenzene is ____ reactive than benzene towards electrophilic substitution and directs the incoming electrophile to the ____ position.
1 more, ortho/para
2 less, ortho/para
3 more, meta
4 less, meta
Explanation:
ortho-para directing groups activate the benzene ring towards electrophilic substitution while meta directing groups deactivate the benzene ring towards electrophilic substitution. \(-\mathrm{F},-\mathrm{Cl}\), \(-\mathrm{Br}\) and -I (i.e. halogens) are exceptions to the above rule. These groups are o-, p-directing but deactivate the benzene ring.
322830
Reactivity towards nucleophilic substitution among given compounds.
1 (i) \( < \) (ii) \( < \) (iii)
2 (i) \( < \) (iii) \( < \) (ii)
3 (iii) \( < \) (ii) \( < \) (i)
4 (ii) \( < \) (iii) \( < \) (i)
Explanation:
Nucleophilic aromatic substitution reactions are favoured by EWG preferably at \(\mathrm{O} / \mathrm{P}\) positions. So, II > III > I (reactivity order).
CHXII10:HALOALKANES AND HALOARENES
322831
Statement A : Chlorobenzene is reactive towards Aromatic nucleophilic substitution reaction than o-Nitrochlorobenzene. Statement B : \(-\mathrm{NO}_{2}\) is stronger EWG than \(-\mathrm{Cl}\)
1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Chlorobenzene is less reactive than onitrochlorobenzene towards ArSN reactions.
CHXII10:HALOALKANES AND HALOARENES
322832
Statement A : Chlorine is an ortho-para directing group in electrophilic aromatic substitution reaction. Statement B : Chlorine is an electron withdrawing group.
1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Chlorine is an electron withdrawing group, yet it acts as ortho, para-directing group in electrophilic aromatic substitution reaction due to its \(+\mathrm{R}\)-effect.
322834
Chlorobenzene is ____ reactive than benzene towards electrophilic substitution and directs the incoming electrophile to the ____ position.
1 more, ortho/para
2 less, ortho/para
3 more, meta
4 less, meta
Explanation:
ortho-para directing groups activate the benzene ring towards electrophilic substitution while meta directing groups deactivate the benzene ring towards electrophilic substitution. \(-\mathrm{F},-\mathrm{Cl}\), \(-\mathrm{Br}\) and -I (i.e. halogens) are exceptions to the above rule. These groups are o-, p-directing but deactivate the benzene ring.
322830
Reactivity towards nucleophilic substitution among given compounds.
1 (i) \( < \) (ii) \( < \) (iii)
2 (i) \( < \) (iii) \( < \) (ii)
3 (iii) \( < \) (ii) \( < \) (i)
4 (ii) \( < \) (iii) \( < \) (i)
Explanation:
Nucleophilic aromatic substitution reactions are favoured by EWG preferably at \(\mathrm{O} / \mathrm{P}\) positions. So, II > III > I (reactivity order).
CHXII10:HALOALKANES AND HALOARENES
322831
Statement A : Chlorobenzene is reactive towards Aromatic nucleophilic substitution reaction than o-Nitrochlorobenzene. Statement B : \(-\mathrm{NO}_{2}\) is stronger EWG than \(-\mathrm{Cl}\)
1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Chlorobenzene is less reactive than onitrochlorobenzene towards ArSN reactions.
CHXII10:HALOALKANES AND HALOARENES
322832
Statement A : Chlorine is an ortho-para directing group in electrophilic aromatic substitution reaction. Statement B : Chlorine is an electron withdrawing group.
1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Chlorine is an electron withdrawing group, yet it acts as ortho, para-directing group in electrophilic aromatic substitution reaction due to its \(+\mathrm{R}\)-effect.
322834
Chlorobenzene is ____ reactive than benzene towards electrophilic substitution and directs the incoming electrophile to the ____ position.
1 more, ortho/para
2 less, ortho/para
3 more, meta
4 less, meta
Explanation:
ortho-para directing groups activate the benzene ring towards electrophilic substitution while meta directing groups deactivate the benzene ring towards electrophilic substitution. \(-\mathrm{F},-\mathrm{Cl}\), \(-\mathrm{Br}\) and -I (i.e. halogens) are exceptions to the above rule. These groups are o-, p-directing but deactivate the benzene ring.
