Answer
Procaine & Vitamin C both have two types of carbon, saturated carbon & unsaturated carbon (double bonded) and their hybridization is shown in images (a) procaine & (b) vitamin C.
Work Step by Step
Pi bonds are never involved in hybridization, only sigma bonds are always responsible for geometry & shape of a molecule. So all saturated carbon centers ( with sigma bond only) are sp³ hybridized and unsaturated carbon centers ( with double bonds ) are sp² hybridized. If carbon is triple bonded in any molecule then it will be sp hybridized.
Note:- © is carbon center and arrow is written to show hybridization of that center.
