A. Reaction of NH3 with HNO3 to produce (NH4)2NO3 is endothermic
B. With increase in NH3/CO2 ratio, urea yield decreases for a given temperature, pressure and
total feed rate
C. Biuret (an intermediate during urea manufacture) is toxic to seeds and animals
D. Both B. and C.
Correct Answer: B. With increase in NH3/CO2 ratio, urea yield decreases for a given temperature, pressure and
total feed rate ✔
Last Updated: March 11, 2019