a. carbon is SP2 hybridised and oxygen is also SP2 hybridised b. C which is on the left of C=O is sp3 hybridised c. O which is on the right of C = O bond is sp3 hybridised Solution a. carbon is SP2 hybridised and oxygen is also SP2 hybridised b. C which is on the left of C=O is sp3 hybridised c. O which is on the right of C = O bond is sp3 hybridised.