Q.1.
Consider the following reaction and statements : [Co(NH3)4Br2]+ + Br– → [Co(NH3)3Br3] + NH3 (I) Two isomers are produced if the reactant complex ion is a cis-isomer. (II) Two isomers are produced if the reactant complex ion is a trans-isomer. (III) Only one isomer is produced if the reactant complex ion is a trans-isomer. (IV)Only one isomer is produced if the reactant complex ion is a cis-isomer. The correct statements are : IIT mains 2018]
-
0%
a) (I) and (III)
-
0%
b) (III) and (IV)
-
100%
c) (II) and (IV)
-
0%
d) (I) and (II)
Explanation
Q.2.
Which of the following will show geometrical isomerism? [ DPMT 2001]
-
100%
b) 1,2-Dibromobutene
-
0%
a) 1-Butene
-
0%
c) Propene
-
0%
d) Isobutylene
Q.3.
In the boat conformation of cyclohexane, the most destabilizing interaction is ...
-
0%
a) Eclipsing
-
0%
b) 1, 3-Diequatorial
-
50%
c) 1,3-Diaxial
-
50%
d) Flagpole-Flagpole
Q.4.
ionParagraph question P and Q are isomers of dicarboxylic acid C4H4OBoth decolorize Br2 / H2O. On heating , P forms the cyclic anhydride. Upon treatment with dilute alkaline KMnO4 , P as well as Q could produce one or more than one from S, T and U. Q94) Compounds formed from P and Q are , respectively
-
0%
a) Optically active S and optically active pair (T, U)
-
50%
b) Optically inactive S and optically inactive pair (T, U)
-
25%
c) Optically active pair (T, U) and optically active S
-
25%
d) Optically inactive pair (T, U) and optically inactive S.
Explanation
Q.5.
n-Propyl alcohol and isopropyl alcohol are examples of ... [ BHU 1994]
-
50%
a) Position isomers
-
0%
b) Chain isomerism
-
50%
c) Tautomerism
-
0%
d) Geometrical isomerism
Q.6.
ion Q97) The absolute configuration of the following compound is ...[ AIIMS 2003]
-
50%
a) 2S, 3R
-
0%
b) 2S,3S
-
50%
c) 2R, 3S
-
0%
d) 2R, 3R
Explanation
Q.7.
ion Q98) When the following aldohexose exists in its D configuration, the total number of stereoisomers in its pyranose form is
-
50%
a) 1
-
0%
b) 4
-
0%
c) 6
-
50%
d) 8
Q.8.
ion Q99) The total number(s) of stable conformers with non-zero dipole moment for the following compound is (are) ..[ IIT advance2014]
-
50%
a) 1
-
0%
b) 2
-
50%
c) 3
-
0%
d) 4
Explanation
Q.9.
Which one of the following is the stablest structurte of cyclohexatriene? ...[ AIIMS 1994]
-
80%
a) Chair form
-
0%
b) Boat form
-
20%
c) Halfchair form
-
0%
d) Planar form
Q.10.
on Q101) The total number of stereoisomers that can exist for M is [IIT advance 2015]
-
25%
a) 1
-
25%
b) 2
-
50%
c) 8
-
0%
d) 6
Explanation
Q.11.
Which of the following compounds will show metemerism? ...[ Hariyamna CEET 1996]
-
0%
a) CH3 - CO - C2H5
-
25%
b) C2H5 - S - C2H5
-
50%
c) CH3 - O - CH3
-
25%
d) CH3 - O - C2H5
Q.12.
Compound(s) that on hydrogenation produce(s) optically inactive compound(s) is(are)
-
0%
a)
-
50%
b)
-
50%
c)
-
0%
d)
Q.13.
The number of geometrical isomers of ... [ Manipal PMT 1999] CH3CH = CH - CH = CH - CH = CHCl is
-
0%
a) 2
-
50%
b) 4
-
0%
c) 6
-
50%
d) 8
Q.14.
on Q105) The structure of D-(+)-glucose is What is the structure of L-(+)-glucose
-
33%
a)
-
33%
b)
-
33%
c)
-
0%
d)
Q.15.
How many stereoisomers are therefor tartaric acid?
-
0%
a) 2
-
0%
b) 3
-
50%
c) 4
-
50%
d) 5
Q.16.
Which of the following complex species is not expected to exhibit optical isomerism ? [ IIT Main 2013 ]
-
0%
a) [Co(en)3]3+
-
0%
b) [Co(en)2Cl2]+
-
33%
c) [Co(NH3)3Cl3]
-
67%
d) [Co(en)(NH3)2Cl2]+
Q.17.
The number of geometric isomers that can exist for square planar [Pt (Cl) (py) (NH3) (NH2OH)]+ is (py = pyridine ) [ IIT Main 2015]
-
0%
a) 2
-
0%
b) 3
-
50%
c) 4
-
50%
d) 6
Explanation
Q.18.
on Q110) In the following structures, which two forms are staggered conformation of ethane?
-
0%
a) 1 and 4
-
0%
b) 2 and 3
-
100%
c) 1 and 2
-
0%
d) 1 and 3
Q.19.
Which of the following compounds will exhibit geometrical isomerism? [ IIT2000]
-
33%
a) 1-Phenyl-2-butene
-
0%
b) 3-Phenyl-1-butene
-
33%
c) 2-Phenyl-1-butene
-
33%
d) 1,1-Diphenyl-1-propene
Q.20.
Which of the following compounds will exhibit geometrical isomerism? [ IIT 2015]
-
0%
a) 1 - Phenyl - 2 - butene
-
0%
b) 3 - Phenyl - 1- butene
-
0%
c) 2 - Phenyl - 1- butene
-
100%
d) 1, 1 - Diphenyl - 1 - propane
Explanation
Q.21.
Tautomerismwill be exhibited by ..[CBSE PMT 1997]
-
0%
a) (CH3)3CNO
-
0%
b) (CH3)2NH
-
50%
c) R3CNO2
-
50%
d) RCH2NO2
Q.22.
How many chiral carbon atoms are present in 2,3,4-trichloropentane? [ IIT1990]
-
0%
a) Three
-
67%
b) Two
-
0%
c) One
-
33%
d) Four
Q.23.
on Q116) The absolute configuration of ..
-
0%
a) (2R, 3S)
-
0%
b) (2S, 3R)
-
50%
c) (2S, 3S)
-
50%
d) (2R, 3R)
Explanation
Q.24.
The total number of isomers for C4H8 is ...[ AIIMS 1996]
-
40%
a) 5
-
40%
b) 6
-
0%
c) 7
-
20%
d) 8
Q.25.
Thenumber of optical isomers formed by hydrogenationof the compound, (CH3)2C = CHCH3 are ..[ BHU 2000]
-
0%
a) 1
-
67%
b) 2
-
0%
c) 3
-
33%
d) zero
Q.26.
The number of possible acyclic structureal isomers of C4H10O is ...[ MPPMT 1998]
-
50%
a) 5
-
0%
b) 6
-
25%
c) 7
-
25%
d) 8