Urea(H(2)NCONH(2)) is manufactured by pa...

Urea`(H_(2)NCONH_(2))` is manufactured by passing `CO_(2)`(g) through ammonia solution followed by crystallization. For the above reaction is prepared by combustion of hydrocarbons. If combustion of 236 kg of a saturated hydrocarbon `(C_(n)H_(2n+2))` produces as much `CO_(2)` as required for production of 999.6 kg urea then molecular formula of hydrocarbon is:

`C_(10)H_(22)`

`C_(12)H_(26)`

`C_(13)H_(28)`

`C_(8)H_(18)`

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