Q. Tricresyl phosphate is chemically represented as

View solution

Q. Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the

View solution

Q. __________ is required more for leafy crops.

View solution

Q. The composition of fresh feed to the high temperature, high pressure urea autoclave is

View solution

Q. Which of the following does not come under the category of 'micro-nutrient' for plant growth?

View solution

Q. Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of

View solution

Q. Hydrogen is recovered from coke oven gas on commercial scale (as practised in fertiliser plant at Rourkela) by

View solution

Q. In the manufacture of orthophosphoric acid by strong H₂SO₄ leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable

View solution

Q. Reaction of nitric acid and sulphuric acid with phosphate rock produces

View solution

Q. Reaction of __________ acid with phosphate rock produces superphosphates.

View solution

Q. Monte catini process is a widely used process for the manufacture of

View solution

Q. Which of the following solvents is used for the extraction of H₃PO₄ from CaCl₂ solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching?

View solution

Q. Which of the following fertilisers is required for the development of fibrous materials of the plants and of the sugar of vegetable & fruits ?

View solution

Q. In an ammonia plant, the purge off is essential to

View solution

Q. Fertiliser produced during soda ash manufacture by dual process is ammonium

View solution

Q. Low grade phosphate rock can be used in electrical furnace, because

View solution

Q. Iron is not used alone as a catalyst in ammonia synthesis, because

View solution

Q. Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature

View solution

Q. Ammonia synthesis gas is produced from fuel oil by

View solution

Q. P₂O₅ percentage in the phosphoric acid produced by wet process is about

View solution