Relation between (X) and (Y) is :
(1) enantiomers
(2) diastereomers
(3) E and Z isomer
(4) constitutional isomer
How many meso isomers of will be ?
(1) 0
(2) 1
(3) 2
(4) 3
Which conformer of above compound is most stable across
(1) staggered
(2) eclipsed (partially)
(3) gauche
(4) fully eclipsed
The number of chiral centres in the following compound is:
1. 4
2. 5
3. 6
4. 7
Which of the following molecules is (are) optically active?
(1) I andII
(2) III and IV
(3) II, IV and VI
(4) I, II, III and VI
The maximum number of stereoisomers that could exist for the compound below?
(1) 6
(2) 8
(3) 10
(4) 16
Which of the following compounds has a zero dipole moment?
The absolute configurations of the two centers in the following molecule are:
1. 2(R),3(S)
2. 2(R),3(R)
3. 2(S),3(S)
4. 2(S),3(R)
Which of the following will not show geometrical isomerism ?
(1)
(2)
(3)
(4)
Total number of stereoisomers of the compound 2-4-dichloroheptane is:
(1) 0
(2) 2
(3) 3
(4) 4
Which of the following has unstable enol form ?
(1)
(2)
(3)
(4)
The correct structure(s) of D-glyceraldehyde is/are:
1. | 2. | ||
3. | 4. | All of these |
Which of the following compound can show geometrical isomerism ?
(1)
(2)
(3)
(4)
Total number of stereoisomer formed by the given compound is :
1. 2
2. 3
3. 4
4. 8
How many geometrical isomers are possible for the above compound ?
(1) 3
(2) 4
(3) 6
(4) 8
Among the given pairs, in which pair second compound has less enol content than first compound?
(1)
(2)
(3)
(4) none of these
CH−CH=CH−CH=CH−CH; total number of geometrical isomer is :
(1) 2
(2) 3
(3) 4
(4) 6
Which of the following compound has one of the stereoisomers as a meso compound?
(1)
(2)
(3)
(4)