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Fertilizer Technology-Data Intensity 4 Multiple Questions and Answers.
| 2. | The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about ______ percent? | ||
| A. | 60 | ||
| B. | 30 | ||
| C. | 95 | ||
| D. | 100 | ||
| 3. | Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of__? | ||
| A. | Phosphoric acid | ||
| B. | Superphosphate | ||
| C. | Phosphorous | ||
| D. | Triple superphosphate | ||
| 4. | Lower temperature and large excess of ammonia in urea melt? | ||
| A. | Increases biuret formation | ||
| B. | Decreases biuret formation | ||
| C. | Is undesirable | ||
| D. | Does not effect biuret formation | ||
| 5. | Bio-fertilisers are cheaper, renewable and pollution free. They improve the _______ of the soil? | ||
| A. | Nutrient supply | ||
| B. | Texture | ||
| C. | Water holding capacity | ||
| D. | All of above | ||
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