Thank you for reporting, we will resolve it shortly
Q.
First transistory chemical formed by reaction between $ C{{O}_{2}} $ and RUBP is
MGIMS WardhaMGIMS Wardha 2013
Solution:
During first phase (carboxylation) of Calvin cycle RUBP (ribulose-1,5-biphosphate) combine with $ C{{O}_{2}} $ in the presence of RUBP carboxylase or rubisco. This reaction produces a transient (unstable) intermediate compound 2 carboxy, 3-keto, 1-5 biphosphoribotol.