Consider two chemical reactions.
`HCOOH_((l))+H_(2)SO_(4(l)) to CO_((g)) +H_(2)SO_(4). H_(2)O_((hq))`
`H_(2)C_(2)O_(4(l)) +H_(2)SO_(4(l))to CO_((g)) +CO_(2(g))+H_(2)SO_(4).H_(2)O_((hq))`
Different mixtures HCOOH & `H_(2)C_(2)O_(4)` are taken & reacted with `H_(2)SO_(4(l))` & gases produced are passed through KOH. select the option (s) in which correct combination of composition of mixture & percentage volume contraction on passing through KOH is mentioned.

Options

A. Molar ratio HCOOH:`H_(2)C_(2)O_(4) = 1:1`
% volume contraction `=100/3%`
B. Molar ratio HCOOH :`H_(2)C_(2)O_(4) =1:3`
% volume contraction `=300/7%`
C. Molar ratio HCOOH :`H_(2)C_(2)O_(4) =2:3`
% volume contraction `=300/8%`
D. Molar ratio HCOOH : `H_(2)C_(2)O_(4)=3:5`
% volume contraction `=1000/13 %`

Answer

ABC