Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Suman Kumar
See this video https://youtu.be/G4N3EfpDDuQ
These are some examples
They are called alkylidenecycloalkanes
They are similar to Allene