Fertilizer Technology Quiz 4
1 / 43
Triple superphosphate is made by reacting phosphate rock with ______ acid?
2 / 43
Which of the following does not come under the category of ?secondary nutrient? for plant growth ?
3 / 43
Which of the following fertilisers contains the least percentage of nitrogen ?
4 / 43
Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it_____?
5 / 43
Urea is formed only______?
6 / 43
Urea is represented as________?
7 / 43
The optimum size of the ammonia plant is _______ tons/day?
8 / 43
Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas ?
9 / 43
Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition ________?
10 / 43
Vapor phase reaction of ammonia & nitric acid to produce ammonium nitrate is termed as the ________ process?
11 / 43
Which of the following nitrogenous fertilisers has the highest percentage of nitrogen ?
12 / 43
Which is the most suitable fertiliser for paddy ?
13 / 43
The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about _____ percent?
14 / 43
The main constituent of rock phosphate is _______?
15 / 43
Two gas based fertiliser plants are located in India are__________?
16 / 43
Triple superphosphate is chemically represented as_______?
17 / 43
Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of _____ this is normally not done?
18 / 43
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_____?
19 / 43
Which of the following is not a mixed fertiliser ?
20 / 43
Which one of the following is used as a nitrogenous fertiliser, as a weed killer in the onion fields and for correcting acidic soils ?
21 / 43
Urea is a better fertilizer than ammonium sulphate, because___________?
22 / 43
Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N2 & H2 is high. The presence of promoter along with the catalyst helps in _______ of the catalyst ?
23 / 43
The essential ingredient of all the synthesis gas is_____?
24 / 43
Tricresyl phosphate is chemically represented as_____?
25 / 43
Which of the following fertilisers is required for the development of fibrous materials of the plants and of the sugar of vegetable & fruits ?
26 / 43
Vetrocoke solution is__________?
27 / 43
Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth ?
28 / 43
Which is a catalyst promoter used in catalytic ammonia synthesis reaction ?
29 / 43
Which nutrient in fertiliser makes the plant stems stronger and increases branching ?
30 / 43
Which of the following fertilizers is used as a cattle feed ?
31 / 43
Urea (a nitrogenous fertiliser) is produced from carbon dioxide and___________?
32 / 43
Triple superphosphate which contains about 46% P2O5 is produced by the reaction of phosphate rock with ortho phosphoric acid of______ percent concentration?
33 / 43
With increases in pressure, the conversion of Ammonium carbamate into urea_____?
34 / 43
Yield of elemental phosphorous from rock phosphate is about ______ percent?
35 / 43
Which is the best fertiliser for paddy ?
36 / 43
Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis ?
37 / 43
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 ?
38 / 43
Which of the following is not a measure component necessarily to be present in fertilisers ?
39 / 43
The composition of fresh feed to the high temperature, high pressure urea autoclave is________?
40 / 43
Which of the following set of conditions is favourable for the maximum yield of ammonia by Haber?s process ?
41 / 43
The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is ______ fertiliser?
42 / 43
Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant ?
43 / 43
Which of the following gasifiers can be attached to coal based fertiliser plants ?
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