Which of the following will give yellow precipitate on shaking with aqueous solution of NaOH followed by acidification with dilute HNO3 and addition of AgNO3 solution?1)1-bromo4- cholorobenzene2) benzyl chloride3)1-bromo -4(iodomethyl) benzene4) o-chloro toulene

'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