The reaction of `HCOOH` with `conc. H_2 SO_4` gives :
The reaction of `HCOOH` with `conc. H_2 SO_4` gives :
A. CO
B. `CO_2`
C. NO
D. `NO_2`
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The reaction of `HCOOH` with `conc. H_2 SO_4` gives :
A. CO
B. `CO_2`
C. NO
D. `NO_2`