Which of the following does not answer iodoform test?

(a) 1-propanol

(b) Ethanol

(c) 2 propanol

(d) Ethanal

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

 

Using above information

Match the following 

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Plz answer this query.....................................................................................................

how to represent the possible fischer projections for 2-bromohexane