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.Management Sciences
A. During the early stage of growth to promote development of stem and leaves
B. For accelerating fruit formation in later stage of growth
C. To lessen the effect of excessive potash application
D. None of these
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- Which one of the following is used as a nitrogenous fertiliser, as a weed killer in the onion fields and for correcting acidic soils ?
- A. Urea B. CAN C. Ammonium sulphate D. Calcium cyanamide...
- During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH3 to NO is about ______________ percent?
- A. 38 B. 68 C. 82 D. 98...
- Iron is not used alone as a catalyst in ammonia synthesis, because___________________?
- A. Its activity declines rapidly, if heated to above 520°C B. It decomposes ammonia C. It gets oxidised above 500°C D. None of these...
- Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at ______________ °C?
- A. 250-300 B. 500-750 C. 950-1050 D. 1400-1450...
- Which of the following fertilisers is required for the development of fibrous materials of the plants and of the sugar of vegetable & fruits ?
- A. Nitrogenous fertilisers B. Phosphatic fertilisers C. Potassic fertiliser D. None of these...
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