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SOME BASIC PRINCIPLES OF ORGANIC CHEMISTRY
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How many σ and π bonds are present in HC≡CCH=CHCH₃?
A. σC–C: 3; σC–H: 5; πC=C:2; πC≡C:1
B. σC–C: 5; σC–H: 7; πC=C:1; πC≡C:2
C. σC–C: 4; σC–H: 6; πC=C:1; πC≡C:2
D. σC–C: 4; σC–H: 6; πC=C:2; πC≡C:1
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