5)
There are 6 C-H sigma bonds.
There are 2 C-C sigma bonds.
There is 1 C-O sigma bond.
There is 1 C-O pi bond.
So,
Number of sigma bonds = 9
Number of pi bonds = 1
6)
O forms 1 double bonds. This is 1 electron domain.
O has 2 lone pairs not shown in picture. This is 2 electron domain.
So, total number of electron domain around O is 3
So, it is sp2 hybridised
Answer: sp2
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