Fsc Chemistry Unit 9 Aromatic Hydrocarbons solved MCQs. 2nd-year chemistry unit-wise past papers MCQs with answer keys. These MCQs are collected from previous Intermediate Boards from 2014-2015-2016-2017-2018-2019-2020-2021-2022 and 2023.
Chemistry Unit 9 Aromatic Hydrocarbons
Unit 9 Aromatic Hydrocarbons Solved MCQs
Aromatic Hydrocarbons m-Chloronitro beneze is prepared by: (BWP. GI, 2014)
(A) nitration of chloro benzene
(B) nitration of benzene
(C) chlorination of nitrobeneze
(D) nitration of m-chloro benzene
Aromatic hydrocarbons are the derivatives of: (SGD. GII, 2015)(SGD. GI, 2017)
(A) Normal series of paraffin
(B) Alkene
C) Benzene
(D) Cyclohexane
The structure of Ben zene is: (MLN. GII, 2016)
(A) Hexagonal irregular
(B) Tetrahedral
(C) Trigonal planner
(D) Hexagonal planner
During the Nitration of Benzene, the active nitrating agent is: (GRW.LAR. FBD. 2014)(DGK. GI, 2015)(SGD. 2016)(LHR. GII, 2016)(GRW. 2017)
(LHR. GI, RWP, 2018)
(A) NO3
(B) NO;
(C) NO,
(D) HNO3
Benzene cannot undergo (LHR. GII, 2014)( MLN. GI, 2015)(RWP. MLN. GII, 2017)(LHR. GII, FBD. 2017) (SWL, SGD, GI, 2018)
(A) Substitution Reactions
(B) Addition Reactions
(C) Oxidation Reactions
(D) Elimination reactions
The C-C bond length in benzene is: (DGK. GI, 2012) (GRW. 2018)
(D) 1.54
Which catalyst is used in Friedel Crafts Reactions? (SWL. MLN. DGK. GII, 2014)(SGD.GI, 2015)(RWP. GI, 2017) (MLN. 2018)
(A) AlCl3
(B) BeCl2
(C) NaCl
(D) HNO3
resonating contributing structures of Benzene are: (LHR. GI, 2016)
(C) 5
(A) 2
(D) 7
The electrophile in Aromatic sulphonation is: (GRW. BWP. 2014)(GRW. GII, MLN. GII, AJK. 2015) (FBD, BWP. GI, 2018)
(A) H2SO4
(C) SO3
(D) SOM
Aromatic compounds burn with sooty flame because (RWP. 2016)
(A) They have a high percentage of hydrogen
(B) They have a ring structure
(D) They resist reaction to air
(C) They have a high percentage of carbon
m-chlorinator benzene is prepared by (DGK. 2014)
(A) Nitration of Benzene
(B) Nitration of chlorobenzene
(C) Nitration of m-chlorobenzene
(D) Chlorination of Nitrobenzene
Which one is not a meta-directing group?
(A) -COOH
D -NH2
(B) -CHO
The benzene molecule contains:
(A) three double bonds
(C) one double bond
(D) Rearrangement
Which is not a meta directing group?
(A) -COOH
(B) CHO
(C) -COR
(D) -NH2
The molecular formula of benzyl chloride is? (AJK. 2018)
(A) H5C6CCl3
(B) H3C6CHCl2
(C)H5C6CH2Cl
(D) H3C6CH2 CH2Cl