Q.1
ion Q91) Identify (B) and (D) in the following sequence of reactions: [Karnataka CET 2011]
ch-23_que_no-91_img_no1.png
  • a) CH3OH and C2H5Br
  • b) C2H5HSO4 and alc. KOH
  • c) C2H5OH and alc. KOH
  • d) C2H5HSO4 and aq.KOH
Q.2
Which of the following is most reactive towards electrophilic substitution reaction? [ J & K CET 2011]
  • a) Aniline
  • b) Nitrobenzene
  • c) Benzoic acid
  • d) Acetanilide
Q.3
ion Q93) In the reaction given below, X is ...[ DPMT 2009]>br/>
ch-23_que_no-93_img_no1.png
  • a) 2-methylpentane
  • b) neo-pentane
  • c) 2-methypent-2-ene
  • d) 2-methylbut-2-ene
Q.4
Hydrocarbon which is liquid at room temperature is ...[ AIIMS 2001]
  • a) Pentane
  • b) Butane
  • c) Propane
  • d) Ethane
Q.5
The complete combustion of CH4 gives ...[ BHU 2004]
  • a) CO + H2
  • b) CO + N2
  • c) CO + N2O
  • d) CO2 + H2O
Q.6
Acetylenic hydrogens are acidic because ...[ CBSE PMT 1989]
  • a) Sigma electron density of C-H bond in acetylene is nearer to carbon, which has 50% s-character
  • b) Acetylene has only one hydrogen on each carbon
  • c) Acetylene contains least number of hydrogens among the possible hydrocarbons having two carbons
  • d) Acetylene belongs to the class of alkynes with molecular formula. CnH2n-2
Q.7
ion Q97) In the following compound, the C-2 and C-3 bond is of the type ..[ IIT 1999]
ch-23_que_no-97_img_no1.png
  • a) sp-sp2
  • b) sp3-sp3
  • c) sp-sp3
  • d) sp2-sp3
Q.8
Which of the following metal powder is sued to convert trichloromethane into acetylene by heating the latter with it ? 9Pb CET 1995]
  • a) Na
  • b) Mg
  • c) Ca
  • d) Ag
Q.9
Which of the following sequence of reaction (reagents) can be used for the conversion of C6H5CH2CH3 into C6H5-CH = CH2 ? [ AIIMS 2006]
  • a) SOCl2; H2O
  • b) SO2Cl2; alc. KOH
  • c) Cl2/hν; H2O
  • d) SOCl2; alc.KOH
Q.10
The compound which has one isopropyl group is ..[ IIT 1989]
  • a) 2, 2, 3. 3-tetramethyl pentane
  • b) 2, 2-dimethyl pentane
  • c) 2, 2, 3-trimethyl pentane
  • d) 2-methyl pentane
Q.11
Benzene gives mainly ..[ DPMT 2007]
  • a) substitution reaction
  • b) addition reaction
  • c) elimination reaction
  • d) all of these
Q.12
To prepar a pure sample of n-hexane using sodium metal as one reactant, the other reactants will be ...[ CBSE PMT 1992]
  • a) Ethyl chloride and n-butyl chloride
  • b) Methyl bromide and n- pentyl bromide
  • c) n-Propyl bromide
  • d) Ethyl bromide and n-.butyl bromide
Q.13
Acid catalysed hydration of alkenes except ethene leads to the formation of ...[ JCECE (Med) 2008]
  • a) primary alcohol
  • b) secondary or tertiary alcohol
  • c) mixture of primary and secondary alcohols
  • d) mixture of secondary and tertiary alcohol
Q.14
hich of the following has the lowestdipole moment? [ IIT 2002]
  • a) CH2=CH-C≡CH
    ch-23_qn-104choice_img_no4.png
  • b) CH3C ≡ CCH3
  • c) CH2 = CH -C ≡ CH
  • d)
Q.15
Which of the following liberates methane on treatment with water? [ CMC Vellore 2007]
  • a) Silicon carbide
  • b) Calcium carbide
  • c) Beryllium carbide
  • d) Magnesium carbide
Q.16
enzene does not go adition reactions easily because
  • a) It has a cyclic structure
  • b) Double bonds in it arevery strong
  • c) Reasonance stabilized system is to be preserved
  • d) It has six hydrogenatoms
Q.17
-phenyl propene on acidic hydration, gives ..[ IIT 2004]
  • a) 2-phenyl-2-propanol
  • b) 2-phenyl-1-propanol
  • c) 3-phenyl-1-propanol
  • d) 1-phenyl-2-propanol
Q.18
The substance that would not at all be formed during the reaction of methane and chlorine in the presence of sunlight is ...
  • a) CH3Cl
  • b) CHCl3
  • c) CH3CH3
  • d) CH3CH2CH3
Q.19
The reaction of sodium formate with soda lime gives
  • a) Hydrogen
  • b) Methane
  • c) Ethane
  • d) None of the above
Q.20
How many chiral compounds are possible on monochlorination of 2-methyl butane? [ IIT 2004]
  • a) 2
  • b) 4
  • c) 6
  • d) 8
Q.21
Among the given compounds, one which can be distinguished by AgNO3 is ? [ AFMC 2010]
  • a) Ethane
  • b) Ethylene
  • c) Acetylene
  • d) Diethyl ether
Q.22
Statement I: 1-butene on reaction with HBr in the presence of peroxide produces 1-bromobutane Statement II: It involves the formation of a primary radical
  • a) Statement I is correct Statement II is correct Satement II is a correct explanation of statement I
  • b) Statement I is correct statement II is correct statement II is not the correct explanation of statement I
  • c) Statement I is correct, statement II is incorrect
  • d) Statement I is incorrect statement II is correct
Q.23
on Q113) Following compound is an ...[ DPMT 2007]
ch-23_que_no-113_img_no1.png
  • a) alcoholic KOH
  • b) alcoholic KOH followed by NaNH2
  • c) aqueous KOH followed by NaNH2
  • d) Zn/CH3OH
Q.24
Which of following will not react with acetylene? [ AIEEE 2002)
  • a) NaOH
  • b) ammonical AgNO3
  • c) Na
  • d) HCl
Q.25
Which one of the following has the lowest boiling point ... [ PMT Kerala 2011]
  • a) 2-Methylbutane
  • b) 2-Meyhylpropane
  • c) 2,2-Dimethylpropane
  • d) n-pentane
Q.26
Which one of the following will undergo meta-substitution on monochlorination? ...[ AIIMS 1991]
  • a) Ethoxybenzne
  • b) Chlorobenzene
  • c) Ethyl benzoate
  • d) Phenol
Q.27
When propyne is treated with aqueous H2SO4 in the presence of HgSO4, the major product is ...[ IIT 1983]
  • a) Propanal
  • b) propyl hydrogen sulphate
  • c) acetone
  • d) propanol
Q.28
When an alyyne, RC≡CH, is treated with cuprous ion in an ammonical medium, one of the products is ...[ DEC 1996]
  • a) RC ≡ CCu
  • b) CuC ≡ CH
  • c) CuC ≡ CCu
  • d) RC ≡ CR
Q.29
Arrange in order of decreasing reactivity towards electrophilic reagent in ; chlorobenzene (I), benzene (II), toluene (III), phenol (IV) would be ...[ AIPMT 2007]
  • a) IV > III > II > I
  • b) IV > I > II > III
  • c) II > I > IV > III
  • d) I > II > IV > III
Q.30
han one correct answer Q121) Which one of the following exhibits geometrical isomerism? [ Kerala PMT 2011]
  • a) 1, 2-Dibromopropene
  • b) 2, 3-Dimethylbut-2-ene
  • c) 2,3-Dibromobut-2-ene
  • d) 2-Methylbut-2-ene
0 h : 0 m : 1 s