232312
Which one of the following compounds is nonaromatic?
1
2
3
4
Explanation:
Compound which does not follow Huckle rule and which compound has $\mathrm{Sp}^{3}$ hybridized carbon is called non aromatic compound. Out of four compound only in compound only (a) has carbon with $\mathrm{Sp}^{3}$ hybridization and it does not have conjugated system. So it in Non-aromatic It is Non- aromatic because it have one carbon with $\mathrm{Sp}^{3}$ hybridization it does not follow Huckel's rule $b, c$ and $d$ is aromatic because it has $(4 n+2) \pi e^{-}$and all compound have planar structure.
JEE Main-2021
GENERAL ORGANIC CHEMISTRY
232319
Identify the anti-aromatic system from among the given options.
1 Benzene
2 [14]-Annulene
3 [18]-Annulene
4 Cyclo-octatetraene
Explanation:
Those compound which follow $(4 \mathrm{n}+2) \pi \mathrm{e}^{-}$is aromatic and those compound which has $4 \mathrm{n} \pi \mathrm{e}^{-}$is anti aromatic It has \(6 \pi \mathrm{e}^{-}\)system so it follow \((4 n+2) \pi\) electron It also follow \((4 n+2) \pi \mathrm{e}^{-}\)so it has \(14 \pi \mathrm{e}^{-}\)system hence it is aromatic \(\mathrm{n}=3\) It is also aromatic because it also follow \((4 n+2) \pi e^{-}\)where n=4 It is not an aromatic it is anti aromatic because it has \(8 \pi\) e \& it follows \(4 n \pi\) electron where, \(n=2\)
J and K CET-(2018)
GENERAL ORGANIC CHEMISTRY
232320
Which one of the following will quickly react with $\mathrm{AgNO}_{3}$ ?
1
2
3
4
Explanation:
(D) :Those compound is aromatic in nature is quickly react with \(\mathrm{AgNO}_3\). To check aromatic of compound then after removal of bromine ion it must be follow \((4 n+2) \pi\) electrons.
J and K CET-(2015)
GENERAL ORGANIC CHEMISTRY
232321
Which one of the following is aromatic?
1 Cyclopentadienyl cation
2 Cyclooctateraene
3 Cycloheptatriene
4 Cycloheptatrienyl cation
Explanation:
: Exp : (D):To show compound aromatic then it follows some condition (1) Compound should be cyclic (2) Compound should be planar is it must be \(\mathrm{sp}^2\) hybridized (3) It must follow Huckel's rule is \((4 n+2) \pi\) electrons where \(n=0,12,3 \ldots\)
232312
Which one of the following compounds is nonaromatic?
1
2
3
4
Explanation:
Compound which does not follow Huckle rule and which compound has $\mathrm{Sp}^{3}$ hybridized carbon is called non aromatic compound. Out of four compound only in compound only (a) has carbon with $\mathrm{Sp}^{3}$ hybridization and it does not have conjugated system. So it in Non-aromatic It is Non- aromatic because it have one carbon with $\mathrm{Sp}^{3}$ hybridization it does not follow Huckel's rule $b, c$ and $d$ is aromatic because it has $(4 n+2) \pi e^{-}$and all compound have planar structure.
JEE Main-2021
GENERAL ORGANIC CHEMISTRY
232319
Identify the anti-aromatic system from among the given options.
1 Benzene
2 [14]-Annulene
3 [18]-Annulene
4 Cyclo-octatetraene
Explanation:
Those compound which follow $(4 \mathrm{n}+2) \pi \mathrm{e}^{-}$is aromatic and those compound which has $4 \mathrm{n} \pi \mathrm{e}^{-}$is anti aromatic It has \(6 \pi \mathrm{e}^{-}\)system so it follow \((4 n+2) \pi\) electron It also follow \((4 n+2) \pi \mathrm{e}^{-}\)so it has \(14 \pi \mathrm{e}^{-}\)system hence it is aromatic \(\mathrm{n}=3\) It is also aromatic because it also follow \((4 n+2) \pi e^{-}\)where n=4 It is not an aromatic it is anti aromatic because it has \(8 \pi\) e \& it follows \(4 n \pi\) electron where, \(n=2\)
J and K CET-(2018)
GENERAL ORGANIC CHEMISTRY
232320
Which one of the following will quickly react with $\mathrm{AgNO}_{3}$ ?
1
2
3
4
Explanation:
(D) :Those compound is aromatic in nature is quickly react with \(\mathrm{AgNO}_3\). To check aromatic of compound then after removal of bromine ion it must be follow \((4 n+2) \pi\) electrons.
J and K CET-(2015)
GENERAL ORGANIC CHEMISTRY
232321
Which one of the following is aromatic?
1 Cyclopentadienyl cation
2 Cyclooctateraene
3 Cycloheptatriene
4 Cycloheptatrienyl cation
Explanation:
: Exp : (D):To show compound aromatic then it follows some condition (1) Compound should be cyclic (2) Compound should be planar is it must be \(\mathrm{sp}^2\) hybridized (3) It must follow Huckel's rule is \((4 n+2) \pi\) electrons where \(n=0,12,3 \ldots\)
NEET Test Series from KOTA - 10 Papers In MS WORD
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GENERAL ORGANIC CHEMISTRY
232312
Which one of the following compounds is nonaromatic?
1
2
3
4
Explanation:
Compound which does not follow Huckle rule and which compound has $\mathrm{Sp}^{3}$ hybridized carbon is called non aromatic compound. Out of four compound only in compound only (a) has carbon with $\mathrm{Sp}^{3}$ hybridization and it does not have conjugated system. So it in Non-aromatic It is Non- aromatic because it have one carbon with $\mathrm{Sp}^{3}$ hybridization it does not follow Huckel's rule $b, c$ and $d$ is aromatic because it has $(4 n+2) \pi e^{-}$and all compound have planar structure.
JEE Main-2021
GENERAL ORGANIC CHEMISTRY
232319
Identify the anti-aromatic system from among the given options.
1 Benzene
2 [14]-Annulene
3 [18]-Annulene
4 Cyclo-octatetraene
Explanation:
Those compound which follow $(4 \mathrm{n}+2) \pi \mathrm{e}^{-}$is aromatic and those compound which has $4 \mathrm{n} \pi \mathrm{e}^{-}$is anti aromatic It has \(6 \pi \mathrm{e}^{-}\)system so it follow \((4 n+2) \pi\) electron It also follow \((4 n+2) \pi \mathrm{e}^{-}\)so it has \(14 \pi \mathrm{e}^{-}\)system hence it is aromatic \(\mathrm{n}=3\) It is also aromatic because it also follow \((4 n+2) \pi e^{-}\)where n=4 It is not an aromatic it is anti aromatic because it has \(8 \pi\) e \& it follows \(4 n \pi\) electron where, \(n=2\)
J and K CET-(2018)
GENERAL ORGANIC CHEMISTRY
232320
Which one of the following will quickly react with $\mathrm{AgNO}_{3}$ ?
1
2
3
4
Explanation:
(D) :Those compound is aromatic in nature is quickly react with \(\mathrm{AgNO}_3\). To check aromatic of compound then after removal of bromine ion it must be follow \((4 n+2) \pi\) electrons.
J and K CET-(2015)
GENERAL ORGANIC CHEMISTRY
232321
Which one of the following is aromatic?
1 Cyclopentadienyl cation
2 Cyclooctateraene
3 Cycloheptatriene
4 Cycloheptatrienyl cation
Explanation:
: Exp : (D):To show compound aromatic then it follows some condition (1) Compound should be cyclic (2) Compound should be planar is it must be \(\mathrm{sp}^2\) hybridized (3) It must follow Huckel's rule is \((4 n+2) \pi\) electrons where \(n=0,12,3 \ldots\)
232312
Which one of the following compounds is nonaromatic?
1
2
3
4
Explanation:
Compound which does not follow Huckle rule and which compound has $\mathrm{Sp}^{3}$ hybridized carbon is called non aromatic compound. Out of four compound only in compound only (a) has carbon with $\mathrm{Sp}^{3}$ hybridization and it does not have conjugated system. So it in Non-aromatic It is Non- aromatic because it have one carbon with $\mathrm{Sp}^{3}$ hybridization it does not follow Huckel's rule $b, c$ and $d$ is aromatic because it has $(4 n+2) \pi e^{-}$and all compound have planar structure.
JEE Main-2021
GENERAL ORGANIC CHEMISTRY
232319
Identify the anti-aromatic system from among the given options.
1 Benzene
2 [14]-Annulene
3 [18]-Annulene
4 Cyclo-octatetraene
Explanation:
Those compound which follow $(4 \mathrm{n}+2) \pi \mathrm{e}^{-}$is aromatic and those compound which has $4 \mathrm{n} \pi \mathrm{e}^{-}$is anti aromatic It has \(6 \pi \mathrm{e}^{-}\)system so it follow \((4 n+2) \pi\) electron It also follow \((4 n+2) \pi \mathrm{e}^{-}\)so it has \(14 \pi \mathrm{e}^{-}\)system hence it is aromatic \(\mathrm{n}=3\) It is also aromatic because it also follow \((4 n+2) \pi e^{-}\)where n=4 It is not an aromatic it is anti aromatic because it has \(8 \pi\) e \& it follows \(4 n \pi\) electron where, \(n=2\)
J and K CET-(2018)
GENERAL ORGANIC CHEMISTRY
232320
Which one of the following will quickly react with $\mathrm{AgNO}_{3}$ ?
1
2
3
4
Explanation:
(D) :Those compound is aromatic in nature is quickly react with \(\mathrm{AgNO}_3\). To check aromatic of compound then after removal of bromine ion it must be follow \((4 n+2) \pi\) electrons.
J and K CET-(2015)
GENERAL ORGANIC CHEMISTRY
232321
Which one of the following is aromatic?
1 Cyclopentadienyl cation
2 Cyclooctateraene
3 Cycloheptatriene
4 Cycloheptatrienyl cation
Explanation:
: Exp : (D):To show compound aromatic then it follows some condition (1) Compound should be cyclic (2) Compound should be planar is it must be \(\mathrm{sp}^2\) hybridized (3) It must follow Huckel's rule is \((4 n+2) \pi\) electrons where \(n=0,12,3 \ldots\)
