Which of the following reagent(s) gives the reaction below CH_3Cl CH_3Cl/AlCl_3

Question

Which of the following reagent(s) gives the reaction below CH_3Cl CH_3Cl/AlCl_3 Cl_2/CH_3Cl CH_3OH/FeCl_3 CH_3Br/FeBr_3 Friedal-Craft alkyation reagent(s) C_2H_5Cl/AlCl_3 Cl_2/CH_3COCl CH_3COCl/AlCl_3 CH_3COCl/FeCl_3 CH_3Cl/FeCl_3 Which of the following functional groups are m-directing? NO_2, CH_3, OH Br, NH_2, OH I, SO_3H, OH CO_2H, SO_3H, NO_2 OCH_3, Cl, COCH_3 Which statement about benzene is Incorrect? The C-C pi - bonding is delocalized The C_5 ring is planar Each C atom is sp^2 hybridized There are 12 sigma (sigma) bonds in benzene The average C - C bond distance is same as C-C double bonds Which of the following is a conjugated diene 2-methylcyclohexanone cyclohexa-1, 3-diene 1-methylcyclohexa-1, 4-diene cyclohexa-1, 4-diene cycloocta-1, 5-diene The aromatic compound is:

Explanation / Answer

The questions are not visibly clear enough, so I am solving those which I can read clearly:-

17. The Friedal crafts alkylation reagents are a combination of primary halide with lewis acid catalyst as AlCl3 , FeCl3. According to this, (A): C2H5Cl/AlCl3 and (E): CH3Cl/ FeCl3

19. The statement which is incorrect about benzene is (E); the avaerage C-C bond distance is same as C-C double bond. This is incorrect as the double bonds are delocalised because of which it has both single bond and double bond characteristics and thus the C-C bond length can not be exactly same as C-C double bond.

Rest all the statements are correct.

20.Conjugated diene is a compound where two double bonds are in conjugation. According to this, (B): cyclohexa-1,3-diene is a conjugated diene.

21. The aromatic compound is one which follows Huckel's Rule, in which

All the carbon atoms must be planar with sp2 hybridisation

Follow (4n + 2) pi electrons (n= 0,1,2....)

The electrons must be delocalised

According to this (a) and (d) are aromatic.

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