Geo-Scientist Prelims 2021 Chemistry Q90: Consider the following set of compounds:

Consider the following set of compounds:

Which one of the following statements is NOT true about the above compounds (I–IV)?

1. (a) I and II represent same structures and are meso compounds
2. (b) [I and III] and [I and IV] are diastereomers
3. (c) III and IV are enantiomers
4. (d) III and IV are diastereomers