Fsc Chemistry Unit 9 Aromatic Hydrocarbons Solved MCQs

fsc chemistry unit 9

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.

Fsc 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 paraffins
(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 Nitration of Benzene, the active nitrating agent is: (GRW.LAR. FBD. 2014)(DGK. GI, 2015)(SGD. GI, 2016)(LHR. GI, DGK. GII, 2016)(GRW.GI, DGK. GI, 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 high percentage of hydrogen
(B) They have a ring structure
(D) They resist reaction with air
(C) They have high percentage of carbon

m-chloronitro 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

Molecular formula of benzyl chloride is? (AJK. 2018)
(A) H5C6CCl3
(B) H3C6CHCl2
(C)H5C6CH2Cl
(D) H3C6CH2 CH2Cl

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