Q.1
Which of the following compounds will show geometrical isomerism? [ DPMT 2009]
  • a) cyclohexene
  • b) 2-Hexene
  • c) 3-Hexyne
  • d) 1, 1 -Diphenyl ethylene
Q.2
(CH3)3CMgCl on reaction with D2Oproduces ... [IIT 1997]
  • a) (CH3)3CD
  • b) (CH3)3COD
  • c) (CH3)CD
  • d) (CH3)COD
Q.3
Reaction of HBr with propene in the presence of peroxide gives ...[ AIPMT 2004]
  • a) isopropyl bromide
  • b) allyl bromide
  • c) n-propyl bromide
  • d) 3-bromopropane
Q.4
When CH3CH2CHCl2 is treated with NaNH2, the product formed is ...[ CBSE PMT 2002]
  • a) CH3 -CH = CH2
    ch-23_qn-34choice_img_no3.png
  • b) CH3 - C ≡ CH
    ch-23_qn-34choice_img_no4.png
  • c)
  • d)
Q.5
Which of the following reactions will not give propane? [ DPMT 2005]
  • a)
    ch-23_qn-35choice_img_no1.png
  • b)
    ch-23_qn-35choice_img_no2.png
  • c)
    ch-23_qn-35choice_img_no3.png
  • d)
    ch-23_qn-35choice_img_no4.png
Q.6
Reactivity of hydrogen atoms attached to different carbon atoms in alkaneshas the order ...[ CBSE PMT 1993]
  • a) Tertiary > Primary > Secondary
  • b) Primary > Secondary > Tertiary
  • c) Tertiary > Secondary > Primary
  • d) Both a and b
Q.7
The reaction of propene with HOCl proceeds via the addition of ...[ IIT 2001]
  • a) H+ in the first step
  • b) Cl+ in the first step
  • c) OH- in the first step
  • d) Cl- and OH- single step
Q.8
Which reacgent can be used to convert, halides, alcohols, carbonyl compounds, acids, etc to alkane
  • a) Zn - Hg/HCl
  • b) Red P + HI
  • c) LiAlH4
  • d) None of these
Q.9
Markovnikov's rule is applicable to ... [ DPMT 1994]
  • a) CH2 = CH2
    ch-23_qn-39choice_img_no4.png
  • b) CH3-CH2-CH3
  • c) CH3-CH = CH - CH3
  • d)
Q.10
ion Q40) Consider the following reaction . Identify the structure of the major product X ..[ IIT 2002]
ch-23_que_no-40_img_no1.png
  • a)
    ch-23_qn-40choice_img_no1.png
  • b)
    ch-23_qn-40choice_img_no2.png
  • c)
    ch-23_qn-40choice_img_no3.png
  • d)
    ch-23_qn-40choice_img_no4.png
Q.11
Number of bonds in benzene molecule are ...[ DPMT 2005]
  • a) 3σ and 12π
  • b) 6σ and 3π
  • c) 12σ and 3π
  • d) 6σ and 6π
Q.12
Which of the following methods is most appropriate for the manufacture of methane? [ CPMT 2000 ]
  • a) By reduction of CH2Cl2
  • b) Wurtz reaction
  • c) Liquefaction of natural gas
  • d) None of these
Q.13
ion Q43) Predict the product 'C' obtained in the following reaction of 1-butyne ..[ AIPMT 2007]
ch-23_que_no-43_img_no1.png
  • a)
    ch-23_qn-43choice_img_no1.png
  • b)
    ch-23_qn-43choice_img_no2.png
  • c)
    ch-23_qn-43choice_img_no3.png
  • d)
    ch-23_qn-43choice_img_no4.png
Q.14
Which of the following is the predominant product in the reaction of HOBr with propene? [ DEC 1994]
  • a) 2-bromo-1-propanol
  • b) 3-bromo-1-propanol
  • c) 2-bromo-2-propanol
  • d) 1-bromo-2-propanol
Q.15
Photochemical halogenation of alkane is an example of ...[ PMT Kerala 2012]
  • a) electrophilic substitution
  • b) nucleophilic substitution
  • c) free radical substitution
  • d) nucleophilic addition
Q.16
Pentene-1 with HCl gives ...[ Pb CET 1991]
  • a) 3-chloropentane
  • b) 2-chlropentane
  • c) 1,2-dichoropentane
  • d) 1-chloropentane
Q.17
Toluene by Etard's reaction gives ...[ DPMT 2006]
  • a) benzyl chloride
  • b) benzaldehyde
  • c) benzene alcohol
  • d) ortho-cresol
Q.18
When an aqueous solution containg sodium acetate and sodium propionet is electrolysed we get
  • a) Ethane
  • b) Propane
  • c) Butane
  • d) All the baove
Q.19
2.8g pf pure alkene contain only double bond per moleculess, react completely with 8g of bromine. What is the molecular formula o the alkene? [ DEC 1994]
  • a) C2H4
  • b) C4H8
  • c) C3H4
  • d) C6H12
Q.20
In electrophilic aromatic substitution reaction, the nitro group is meta- directing because it :...[ Karataka CET 2009]
  • a) decreases electron density at meta- position
  • b) increases electron density at meta- position
  • c) increases electron density at ortho- and para- positions
  • d) decreases electron density ar ortho- and para- position
Q.21
Which alkene on ozonolysis gives CH3CH2CHO and CH3COCH3? [ AIPMT 2001]
  • a) CH3CH2CH = CHCH2CH3
  • b) CH3CH2CH = C(CH3)2
  • c) CH3CH2CH = CHCH3
  • d) (CH3)2C = CHCH3
Q.22
A mixture of ethyl iodide and n-propyl iodide is subjected to Wurtz reaction. Thehtdrocarbon wihich will not be formed is ... [ IIT 1990]
  • a) Butane
  • b) Propane
  • c) Pentane
  • d) Hexane
Q.23
Which of the following compounds yields acetone on ozonolysis followed by hydrolysis? [ BHU 2008]
  • a) 2-Methyl-2-butene
  • b) 3-Methyl-1-butene
  • c) Cyclopentane
  • d) 2-Methyl-1-butene
Q.24
3-Hexyne reacts with Na/liq. NH3 to produce ...[ AIIMS 1997]
  • a) cis-3-hexaene
  • b) trans-3-hexene
  • c) 3-hexylamine
  • d) 2-Hexylamine
Q.25
When CH3COOH reacts with CH3MgX, then ....[ BCECE (Med.)2006]
  • a) CH3COX is formed
  • b) hydrocarbon is formed
  • c) acetone is formed
  • d) alcohol is formed
Q.26
Acetylene when trated with dilute HCl at 60°C (333K) in presnece of HgCl2 produces ...[ Pb CET 1989]
  • a) Methyl chloride
  • b) Vinyl chloride
  • c) Acetaldehyde
  • d) Formaldehyde
Q.27
Which one of the following has the smallest heat of hydrogenation per mole? [ IIT 1993]
  • a) 1-butene
  • b) trans-2-butene
  • c) cis-2-butene
  • d) 1,3-butadiene
Q.28
ion Q58) In the reaction X is
ch-23_que_no-58_img_no1.png
  • a) HNO3
  • b) O2
  • c) O3
  • d) KMnO4
Q.29
A new carbon-carbon bond formation is possible in ...[ DPMT 2009]
  • a) Cannizzaro's reaction
  • b) Friedel-Craft alkylation
  • c) Clemmensen reduction
  • d) Reimer-Tiemann reaction
Q.30
Which of the following is not aromatic? [ Kerala PMT 2006]
  • a) Benzene
  • b) Cyclopropenyl cation
  • c) Tropylium cation
  • d) Cyclopentadienyl cation
0 h : 0 m : 1 s