Which of the following can be NBS Br_2/FeBr_5 Which of the following functional

Question

Which of the following can be NBS Br_2/FeBr_5 Which of the following functional groups are -direction? Br, CH_3CH NH_2 Cl, NH_3, COOH I, SO H OH OCH COCH NO CH CH Which of the following reagent(s) gives the reaction below. CH_3CL Cl_2/Fe Cl_2/AlCl Cl_2/FeCl Cl_2/HCl Which of the following functional groups are m-direction? NO_2, CH_3, OH Br, NH_2+COOH I, SO_3H OH COCH SO_2H CHO Which statement about benzene is incorrect? The C-C pi - bonding is delocalized The C ring is planar The average C-C bond distance is the same as C-C double bonds Each C atom is sp^2 hybridzed there are 12 sigma (sigma) bonds in benzene Which of the following is a conjugate diene cyclopentadiene 2-methyleyelohexanone 1-methyl,cyclohexa-1,4-diene cyclohexa-1,4-diene cycloaeta-1, 5-diene The aromatic compound is Which of the following reaction involves a benzyne mechanism ? Ph-CH_3 rightarrow Ph-COOH Ph-CH_3 rightarrow Ph-CHO Ph-OH rightarrow Ph-Cl Ph-Cl rightarrow Ph none of these Friedal-Craft alkyation reagent(s) C_2H_5Cl/AlCl Cl_2/CH_3COCl CH_3COCl CH_3COCl/FeCl_3 CH_3 Major product in the reaction of benzene with 1-bromopropanc, in the presence of AIBr bromobenzene n-propylbenzene iso-propylbenzene a-bromo-n-p p-bromo-n-propylbenzene Which of .he following is the electrophile in the Friedel-Craft acylation reaction RCO2^+ RCO^+ CO2^+ RX/H_2SO_4 RCO_3^+ The benzyne intermediate has ...... pi bonds 1 2 3 4 5 The reagent used for Allylic/benzylic bromination is: NBS Br_2/Fe Br_2/AlBr_3 Br_2/Fe Br_3

Explanation / Answer

15. C

16. C

17. B

18. A

19. E

20. D

21. E

22. A

23. B

24. C

25. C

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