Nine volumes of gaseous mixture consisting of gaseous organic compound A and just sufficient amount of oxygen required for complete combustion yielded on burning 4 volumes of `CO_(2)`, 6 volumes of water vapours, and 2 volumes of `N_(2)`, at all volumes measured at the same temperature and pressure. If the compounds contains `C, H`, and `N` only, the molecular formula of compound `A` is

Options

A. `C_(2)H_(3)N_(2)`
B. `C_(2)H_(6)N_(2)`
C. `C_(3)H_(6)N_(2)`
D. `C_(3)H_(6)N`

Answer

B

Explanation

`underset({:(2x = 4),(2y = 12),(2z = 4):})(2C_(x))H_(y)N_(z) + 7 O_(2) rarr underset({:(x = 2),(y = 6),(z = 2):})(4CO_(2)) + 6H_(2) O + 2N_(2)`
Formula `= C_(2)H_(6)N_(2)`