Fertiliser Technology Sodium tri poly phosphate (STPP) is chemically represented as Na₃P4O₆ Na₄P3O₈ Na₅P3O₁₀ Na₂PO₄ Na₃P4O₆ Na₄P3O₈ Na₅P3O₁₀ Na₂PO₄ ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Multistage operation (as in the case of catalytic oxidation of SO₂) is not carried out for NH₃ synthesis, because of Comparatively higher pressure drop Chances of entrainment and disturbance of catalyst bed Higher pumping cost High cost of the high pressure vessel used for the reactor Comparatively higher pressure drop Chances of entrainment and disturbance of catalyst bed Higher pumping cost High cost of the high pressure vessel used for the reactor ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Potassic fertilisers Are useful during early stage of the plant growth Help in development of starches of potatoes and grain Stimulate early growth and accelerate seeding None of these Are useful during early stage of the plant growth Help in development of starches of potatoes and grain Stimulate early growth and accelerate seeding None of these ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Catalytic ammonia synthesis reaction as in Haber's process is Irreversible Endothermic Exothermic None of these Irreversible Endothermic Exothermic None of these ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about 2 13 20 6 2 13 20 6 ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Iron is not used alone as a catalyst in ammonia synthesis, because It gets oxidised above 500°C It decomposes ammonia None of these Its activity declines rapidly, if heated to above 520°C It gets oxidised above 500°C It decomposes ammonia None of these Its activity declines rapidly, if heated to above 520°C ANSWER DOWNLOAD EXAMIANS APP
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