Please tell me how can we determine more acidic strenght with the help of inductive effect?Is it true that -I effect is directly proportional to acidic strenght so as -I increases acidic strenght increass?which shows more -I effect NH3+ or COOH IT WAS ASKED IN IIT-JEE 2003.pLEASE HELP SOON

'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