Question: P2O5 percentage in the phosphoric acid produced by wet process is about [A]. 10 [B]. 30 [C]. 50 [D]. 70 Answer: Option B Explanation: No answer description available for this question.

Question: 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. Answer: Option C Explanation: No answer description available for this question.

Question: A fertiliser plant is classified as a gas based fertiliser plant, when it uses __________ gas as a source of hydrogen for the manufacture of ammonia. [A]. coke oven [B]. producer [C]. natural [D]. coal Answer: Option C Explanation:…

Question: Conversion achieved in HNO3 synthesis with the use of platinum catalyst is about 95-97%. The rate of formation of nitrogen dioxide from the oxidation of nitric acid is favoured by [A]. decreasing the pressure. [B]. decreasing the temperature. [C].…

Question: 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 (a), (b) and (c) Answer: Option D Explanation: No answer description available for this…

Question: Liquid ammonia is not used as such a fertiliser in tropical countries like India, because [A]. its N2 content is very low. [B]. it is very costly. [C]. it will evaporate on spraying. [D]. it is not available. Answer:…

Question: Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the [A]. presence of an inert atmosphere. [B]. presence of a reducing atmosphere. [C]. absence of air. [D]. presence of an oxidising atmosphere. Answer: Option…

Question: Commercial fertilisers are available mostly in the form of [A]. powder [B]. grannules [C]. lumps [D]. flakes Answer: Option B Explanation: No answer description available for this question.

Question: A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous. [A]. salt & coke [B]. sand & coke [C]. and coke [D]. and sand Answer: Option B Explanation: No answer description available for this…

Question: Main component of bone ash is [A]. calcium sulphate [B]. calcium phosphate [C]. calcium carbonate [D]. sodium phosphate Answer: Option B Explanation: No answer description available for this question.