Q.1
on Q151) 'A" predominantly in following reaction is [ AIPMT 2008]
ch-23_que_no-151_img_no1.png
  • a)
    ch-23_qn-151choice_img_no1.png
  • b)
    ch-23_qn-151choice_img_no2.png
  • c)
    ch-23_qn-151choice_img_no3.png
  • d)
    ch-23_qn-151choice_img_no4.png
Q.2
Fischer-Trops process is used in the manufacture of ... [ AFMC 1994]
  • a) Synthetic petroleum
  • b) Ethanol
  • c) Benzene
  • d) Ethanoic acid
Q.3
on Q153) Identify the product (Y) in the following reaction sequence : [ CET Karnataka 2006]
ch-23_que_no-153_img_no1.png
  • a) cyclobutane
  • b) cyclopentane
  • c) pentane
  • d) cyclopentanone
Q.4
Which of the following has dipole moment?
  • a) trans-2-butene
  • b) 1-propene
  • c) cis-2-butene
  • d) Both a and b
Q.5
Which of the following has highest knocking property? AFMC 2007]
  • a) Aromatic hydrocarbons
  • b) Olefins
  • c) Branched chain paraffins
  • d) Stright chain parafiins
Q.6
Addition of one equivalent of Br2 to 1,3-pentadiene produces ...
  • a) 4,5-Dibromo-2-pentene
  • b) 1,4-Dibromo-2-pentene
  • c) 3,4 - Dibromopentene
  • d) 3,4-Dibromo -2-pentene
Q.7
arbons gneetStudy Companion For more NEET and AIIMS mcq on Hydrocarbons Q157) Baeyer's reacgent is ... [ IIT 1984
  • a) alkaline permanganate solution
  • b) acidified permaganate solution
  • c) neutral permaganet solution
  • d) aqueous bromine solution
Q.8
Which of the following compounds will exhibit geometrical isomerism? [ IIT 2015 Mains]
  • a) 1-phenyl-2-butene
  • b) 3-phenyl-1-butene
  • c) 2-phenyl-1-butene
  • d) 1, 1-diphenyl-1-propane
Q.9
Meta-directing and deactivating group in aromatic electrophilic substitution is ...[ Kerala PMT 2012]
  • a) - NO2
  • b) - OH
  • c) - Cl
  • d) -CH3
Q.10
When an alkyl iodide is treated with Na in dry ether,a symmetrical alkane ()R2) is obtained. the reaction is called ... [ DEC 1994]
  • a) Grignard reaction
  • b) Fischer-Tropsch reaction
  • c) Berguis reaction
  • d) Wurtz reaction
Q.11
When C2H2, CH4 and C2H4 passes through a test tube which have ammoniacal Cu2Cl2, find out which gas comes out unaffected from test tube? [ BCECE 2008]
  • a) C2H2 and CH4
  • b) C2H2 and C2H4
  • c) C2H2
  • d) C2H4 and CH4
Q.12
Benzene on treatment with amxiture of conc. HNO3 and conc.H2SO4 at 100°C gives ..[ JIPMER 1994]
  • a) Nitrobenzne
  • b) m-dinitrobenzne
  • c) p- dinitrobenzne
  • d) o-dinitrobenzne
Q.13
Which compound can not be formed from Wurtz reaction? [ CPMT 2010]
  • a) propane
  • b) ethane
  • c) butane
  • d) methane
Q.14
Which one of the following is not an aromatic? [ J &K CET 2011]
  • a) Cyclopentadienyl anion
  • b) Cycloheptatrienyl cation
  • c) Thiophene
  • d) Cyclooctatetraene
Q.15
on Q167) Thr principal; organic product formed in the reaction
ch-23_que_no-167_img_no1.png
  • a) CH3CHNr(CH2)8COOH
  • b) CH2 = CH(CH2)8COBr
  • c) CH2BrCH2(CH2)8COOH
  • d) CH2=CH(CH2)7CHBrCOOH
Q.16
Position of double bond in alkenes can be identified by .. [ DEC 2001]
  • a) Bromine water
  • b) Ammonical silver nitrate solution
  • c) Ozonolysis
  • d) None of these
Q.17
on Q169) Among the following compounds, the decreasing order of reactivity towards electrophilic substitution is ...[ AIPMT 2001]
ch-23_que_no-169_img_no1.png
  • a) III > I > II > IV
  • b) IV > I > II > III
  • c) I > II > III > IV
  • d) II > I > III > IV
Q.18
on The reagent(s) for the following conversion is/are ...[ IIT 2007]
ch-23_que_no-170_img_no1.png
  • a) alcoholic KOH
  • b) alcoholic KOH followed by NaNH2
  • c) aqueous KOH followed by NaNH2
  • d) Zn/CH3OH
Q.19
Name the reagent used to bring about the following transformation; but-2-ene to ethanal... [ AMU 2010]
  • a) K2Cr2O7 in acidic medium
  • b) CrO2Cl2/H3O+
  • c) PCC
  • d) O3/H2O-Zn dust
Q.20
R-CH2 - CCl2-R + A → R-C ≡C - R. Reagent A is .. [ CBSE PMT 1989]
  • a) Na
  • b) HCl + H2O
  • c) KOH in C2H5OH
  • d) Zn in alcohol
Q.21
Which one of the following alkenes will react faster with H2 under catalytic hydrogenation condition? [ AIPMT 2005]
  • a)
    ch-23_qn-173choice_img_no1.png
  • b)
    ch-23_qn-173choice_img_no2.png
  • c)
    ch-23_qn-173choice_img_no3.png
  • d)
    ch-23_qn-173choice_img_no4.png
Q.22
Two organic compounds A and B both containing only carbon and hydrogen,on quantitive analysis gave the same percentage composition by weight C =(12/13)×100%, H = (1/13)×100% A decolourises brominewater but B does not. A and B respectively are
  • a) C2H2 and C6H6
  • b) C6H6 and C2H2
  • c) C2H4 and C2H6
  • d) C2H2 and C2H6
Q.23
Which of the following lowest octane number? [ CMC 2007]
  • a) n-Hexadecane
  • b) iso-Octane
  • c) n-Hexane
  • d) n-Heptane
Q.24
Reduction of 2-butyne with sodium inliquid ammonia gives predominantly ..[ CBSE PMT 1993]
  • a) cis--Butene
  • b) No reaction
  • c) trans-2-Butene
  • d) n-butane
Q.25
In the following reaction , the major product is [AIPMT 2012]
  • a)
    ch-23_qn-177choice_img_no1.png
  • b)
    ch-23_qn-177choice_img_no2.png
  • c)
    ch-23_qn-177choice_img_no3.png
  • d)
    ch-23_qn-177choice_img_no4.png
Q.26
The function of AlCl3 in the Friedal-Crafts reaction is ...[Haryana CEET 1998]
  • a) to absorb water
  • b) to absorb HCl
  • c) to produce electrophile
  • d) to produce nucleophile
Q.27
Both methane and ethane can be prepared in one stape from
  • a) CH3CH2I
  • b) CH3Br
  • c) C2H5OH
  • d) CH3OH
Q.28
(CH3)3 CMgCl on reaction with D2O produces ..[ IIT 1997]
  • a) (CH3)3CD
  • b) (CH3)3OD
  • c) (CD3)3CD
  • d) (CD3)3OD
Q.29
Which of the following compound will exhibit cis-trans ( geometrical) isomerism? [ AIMPT 2009]
  • a) Butan-2-ol
  • b) But-2-yne
  • c) 2-Butenol
  • d) But-2-ene
Q.30
In Wurtz reaction, the reagent used is ...[ EAMCET 1998]
  • a) Na
  • b) Na/liqNH3
  • c) Na/dry ether
  • d) Na/ dry alcohol
0 h : 0 m : 1 s