Stereoisomerism

Which of the following combinations amongst the four Fischer projections represents the same absolute configurations?


                 



       

On chlorination of propane, the number of products having the formula ${\mathrm{C}}_3{\mathrm{H}}_6{\mathrm{Cl}}_2$ is 

The number of optically active isomers observed in 1,2-dichlorobutane is:

Which species exhibits a plane of symmetry?

Which of the above formula represent identical compounds?

The structures shown here are related as being

How many stereoisomer of the following molecule are possible? HOOC.CH = C = CH.COOH

The compound with the above configuration is called:

The number of isomers of C₃H₅Br₃ (including stereoisomers):

Which of the following statements is true for a pair of diastereomers?

Which of the following sugars has the configuration (2S, 3R, 4R)?

Which of the following statements must be true for two pure chiral isomers?

Stereoisomers differ from each other in what respect?

How many stereoisomers are possible for the following compound?

How many stereoisomer are present in the following molecule?

How many stereoisomers of (CH₃)₂CHCH = CHCH₂CH(OH)CH₂Br are possible?

The R/S configuration of these compounds are respectively.

The R/S configuration of these compounds are respectively.

Which of the following will have a meso isomer also?

Among the following structures I to IV,


It is true that