In which of the following species is the underlined carbon having sp³hybridisation ?

(a) CH₃COOH

(b) CH₃CH₂ OH

(c) CH₃COCH₃

(d) CH₂ = CH – CH₃

'x' gm of a compound A3B2C5 contains 'y' gm of A atoms

 

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how to represent the possible fischer projections for 2-bromohexane