Q.1
ion Q31) The two optical isomers given below, namely are [ Kerala EEE 2003]
ch-22_que_no-31_img_no1.png
  • a) enantiomers
  • b) geometrical isomers
  • c) diastereomers
  • d) structural isomers
Q.2
The molecule having dipole moment is ...[ Pb. CET 1999]
  • a) 2, 2-Dimethylpropane
  • b) trans-2-Pentene
  • c) Hexane
  • d) 2,2,3,3-Tetramethylbutane
Q.3
Which of the following has the lowest dipole moment? [ IIT 2002]
  • a) CH2=CH - C ≡ CH
    ch-22_qn-33choice_img_no4.png
  • b) CH3 - C ≡ C - CH3
  • c) CH3CH2C ≡ CH
  • d)
Q.4
Cis-trans isomers generally ..[ Kerala CET 2003]
  • a) Contain an asymmetric carbonatom
  • b) rotate the plane of polarizedlight
  • c) are enatiomorphs
  • d) contain double bonedcarbon atoms
Q.5
An organic compound C4H8O,is found to beoptically active. Which of the following could it be? [ ISM Dhanbad 94]
  • a) CH3 - CO- CH2 - CH3
  • b) CH3- CH2- CH2 - CHO
  • c) (CH3)2CH-CHO
  • d) CH2 = CH - CH(OH)- CH3
Q.6
A functional isomerof 1-butyne is ..[ Raj.PMT 1998]
  • a) 2-Butyne
  • b) 1-Butene
  • c) 2-Butene
  • d) 1, 3-Butadiene
Q.7
ion Q37) In the reaction an asymmetriccentre is generated. The acid obtained would be ..[ CBSE PMT 2003]
ch-22_que_no-37_img_no1.png
  • a) D-isomer
  • b) L-isomer
  • c) 50% D+ 50% L-isomer
  • d) 20% D + 80% L-isomer
Q.8
ion Q38) The two compounds shown in the figure below are
ch-22_que_no-38_img_no1.png
  • a) Diastereomers
  • b) Enantiomers
  • c) Epimers
  • d) Regiomers
Q.9
ion Q39) The stability of the compounds ...
ch-22_que_no-39_img_no1.png
  • a) iv > iii > i > ii
  • b) i > iii > ii > iv
  • c) ii > iii > i > iv
  • d) iv > i > iii > ii
Q.10
How many structireal ( including steroisomers) isomers could be obtained by replacing one hydrogen of propene with chlorine?
  • a) 2
  • b) 4
  • c) 3
  • d) 5
Q.11
The number of stereisomers for pent-3-en-2-ol is ..[ Haryana CEET 2000 ]
  • a) 2
  • b) 4
  • c) 3
  • d) 5
Q.12
The number of ether metamers represented by the formula C4H10O is
  • a) 4
  • b) 3
  • c) 2
  • d) 1
Q.13
Which of the following haszero dipole moment? [ CBSE PMT 1996]
  • a) cis--2-Butene
  • b) trans-2-Butene
  • c) 1-Butene
  • d) 2 Methyl-1-propene
Q.14
The number of isomers for the compound with molecularformula C2BrClFI is ..[IIT 2001]
  • a) 3
  • b) 4
  • c) 5
  • d) 6
Q.15
Which of the following is an optically active compound? [ CBSE PMT 1988]
  • a) 1-Butanol
  • b) 1-Propanol
  • c) 2-Chlorobutane
  • d) 4-Hydroxyheptane
Q.16
Which of the following compound is not chiral ..[ CBSE PMT 1998]
  • a) DCH2CH2CH2Cl
  • b) CH3CHDCH2Cl
  • c) CH3CHClCH2D
  • d) CH3CH2CHDCl
Q.17
ion Q47) The correct statement about following A, B, C is ... [ IIT 1997]
ch-22_que_no-47_img_no1.png
  • a) A and B are identical
  • b) A and B are diasteremores
  • c) A and C are enantiomers
  • d) A and B are enantiomers
Q.18
But-2-ene exhibits cis-trans-isomerism due to ..[ CBSE PMT 2000 ]
  • a) rotation around C3 -C3 sigma bond
  • b) restricted rotation around C=C bond
  • c) rotation around C1-C2bond
  • d) rotation around C2-C3 double bond
Q.19
How many cyclic isomers of C5H10are possible? [ DPMT 2000 ]
  • a) 4
  • b) 3
  • c) 7
  • d) 5
Q.20
meso- Tartaric acid is optically inactive due to the presence of ..
  • a) Molecular symmetry
  • b) Molecular asymmetry
  • c) External compensation
  • d) Two asymmetric carbon atoms
Q.21
Optical activityis measured by ...[ AFMC 1995]
  • a) Polarimeter
  • b) Refractometer
  • c) Spectograph
  • d) Tracer technique
Q.22
The number of enantiomers of the compound CH3CHBrCHBrCOOHis..[AIIMS 1997]
  • a) 0
  • b) 1
  • c) 3
  • d) 4
Q.23
Isomers of propionic acid are
  • a) HCOOC2H5 and CH3COOCH3
  • b) HCOOC2H5 and C3H7COOCH
  • c) CH3COOCH3 and C3H7OH
  • d) C3H7OH and CH3COCH3
Q.24
The number of isomers possible for C7H8O is
  • a) 2
  • b) 3
  • c) 4
  • d) 5
Q.25
Which of the following willhave least hindered rotation about carbon-carbon bond? [ IIT 1987]
  • a) Ethane
  • b) Ethylene
  • c) Acetylene
  • d) Hexachloethane
Q.26
An isomer of propanal is ..[KErala CEE 2000 ]
  • a) Acetone
  • b) Propane
  • c) Ethanol
  • d) Propionic acid
Q.27
ion Q57) The product would be ...[ Pb,. PMT 1998]
ch-22_que_no-57_img_no1.png
  • a) a racemate
  • b) oprically active
  • c) a meso compound
  • d) a mixture of diasteromers
Q.28
Theleat number of carbon atoms is alkane forming isomers is ...[ Pb. CET 1997]
  • a) 3
  • b) 1
  • c) 2
  • d) 4
Q.29
C3H9N cannot represent ..[ BHU 2000 ]
  • a) 1° Amines
  • b) 2° Amines
  • c) 3° Amines
  • d) Quaternary salt
Q.30
An important chemical method to resolve a racemic mixture makes use of the formationof ... [ CBSE PMT 1994]
  • a) a meso compound
  • b) enantiomers
  • c) diasteromers
  • d) racemates
0 h : 0 m : 1 s