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chemical engineering fertiliser technology
1. Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N2 & H2 is high. The presence of promoter along with the catalyst helps in __________ of the catalyst.
(A): all a, b & c
(B): improving the strength & heat resistance
(C): increasing the effectiveness
(D): stabilisation
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