In an addition reaction
two sigma bonds are broken, and one pi bond is formed
one pi bond is broken, and one pi bond is formed
one sigma bond is broken, and one sigma bond is formed
one pi bond is broken, and two sigma bonds are formed
none of these
A compound can be hydrogenated by platinum metal and hydrogen to give . How many rings and double bonds does the original compound have?
The original compound has no triple bonds.
3 double bonds and 2 rings
4 double bonds and 1 ring
4 double bonds and 2 rings
3 double bonds and 1 ring
None of the other answers
can be hydrogenated by platinum metal and hydrogen to give 
. How many rings and double bonds does the original compound have?