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MROP finals with choices > Fertilizers > Flashcards

Fertilizers Flashcards

1
Q

guano, phosphate rock, limestone, dolomite, magnesite, peat, pyrite, and sulfur are all sources of phosphates except:

a. guano
b. phosphate rock
c. magnesite
d. pyrite
e. none of the above

A

E. none of the above

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2
Q

Are derived from air and water and are needed in large quantities (Carbon, Hydrogen, Oxygen).

A. Essential elements
B. Micronutrients
C. Macronutrients
D. Minerals

A

C. Macronutrients

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3
Q

Are crucial for plant health and are typically supplied by fertilizer minerals (e.g.N, P, K, Ca, Mg, S).

A. Essential elements
B. Micronutrients
C. Macronutrients
D. Minerals
E. None of the above

A

E. None of the above (Soil supplied nutrients)

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4
Q

Are needed in smaller amounts but are vital for plant development and disease resistance.

A. Essential elements
B. Micronutrients
C. Macronutrients
D. Minerals

A

B. Micronutrients

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5
Q

Consists of the accumulated excrement and remains of birds and bats, providing an essential organic source of P and N.

A. Phosphatic rocks
B. Phosphate
C. Phosphatic limestone
D. Guano

A

D. Guano

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6
Q

Under ideal conditions, the rate of deposition of modern guano deposits is as thick as _____ per year.

A. 8 to 12 cm
B. 8 to 10 cm
C. 9 to 15 cm
D. 9 to 20 cm

A

B. 8 to 10 cm

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7
Q

The initial search for and investigation of guano deposits dated back in ____, when V.E. Elicaño of the then Division of Mines, Bureau of Science assessed guano bearing caves in

A. 1923, Aklan, Capiz
B. 1922, Dumarao, Capiz
C. 1932, Negros Oriental
D. 1942, Aklan, Capiz

A

B. 1922, Dumarao, Capiz

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8
Q

Guano deposits show wide variability from average of _ to _ % in phosphorous pentoxide in content

A. 1.5 % to 36 %
B. 1.3% to 36%
C. 1.5% to 35%
D. 1.4% to 37%

A

A. 1.5% to 36%

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9
Q

Usually dark chocolate brown, soft, oblong, and about the size of a grain of palay which eventually disintegrates into pulverulent masses.

A. Fresh guano
B. Phosphatized limestone
C. Phosphatic guano
D. Limestone

A

A. Fresh guano

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10
Q

Fresh guano contains ____ of nitrogen
A. < 1 to 6%
B. 3 to 5%
C. 8 to 10%
D. 11 to 15%

A

A. < 1 to 6%

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11
Q

Fresh guano contains how much phosphorous pentoxide?

A. 0.25 to 10 %
B. 10 to 15%
C. 20 to 40%
D. 50 to 70%

A

A. 0.25 to 10%

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12
Q

Produced by the mixing of transported soil material with droppings and remains of bats and birds deposited inside the cave, is relatively loose and much lighter in color than fresh guano.

A. Fresh guano
B. Phosphatized limestone
C. Phosphatic soil
D. Limestone

A

C. Phosphatic soil

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13
Q

Phosphatic soils gathered from several caves in the region yield total phosphorus pentoxide of about___.

A. 4 to 16%
B. 8 to 12%
C. 4 to 12%
D. 10 to 12%

A

C. 4 to 12%

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14
Q

They are porous, friable, hard, compact, and similar to the subjacent phosphatized limestone, except that they effervesce weakly or not at all in acids.

A. Fresh guano
B. Phosphatized limestone
C. Phosphatic soil
D. Phosphatized guano

A

D. Phosphatized guano

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15
Q

Phosphatized high-grade guano deposits carry as much as _ % of total phosphorous pentoxide

A. 47. 6%
B. 58.9%
C. 37.9%
D. 38.9%

A

C. 37.9%

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16
Q

A typical sequence of either guano or phosphatized guano is resting on the surface of phosphate rock as preserved in

A. Calinawan Cave
B. Callao Cave
C. Kang-abohon Cave
D. Aglipay Cave

A

C. Kang-abohon Cave

17
Q

They occur as irregular to lenticular masses, as boulders admixed with phosphatic soil or as thin layers interstratified with limestone.

A. Phosphatic soil
B. Phosphatic guano
C. Phosphatized limestone
D. Fresh guano

A

C. Phosphatized limestone

18
Q

The thickness of the Pinamungahan phosphate rock deposits as exposed in the test pits ranges from______

A. 1 to 2 meters
B. 10 to 20 meters
C. 2 to 2.5 meters
D. 10 to 15 meters

A

C. 2 to 2.5 meters

19
Q

The Balamban phosphate deposit is approximately ____ long.
A. 430 meters
B. 235 meters
C. 650 meters
D. 575 meters

A

B. 235 meters

20
Q

Pinamungahan cave has ________ % of P2O5 content.
A. 8.8 to 13.2
B. 14.38 to 19.70
C. 16.59 to 32.40
D. 42. 5 to 55.3

A

C. 16.59 to 32.40

21
Q

Pinamungahan cave has ________ % of fluorine content.
A. 0.19 to 0.37%
B. 3.5 to 8.8%
C. 1.69 to 3.40%
D. 4. 5 to 5.3%

A

A. 0.19% to 0.37%

22
Q

Pinamungahan cave has a workable positive ore reserve of _____.
A. 3250 MT
B. 4250 MT
C. 8250 MT
D. 5250 MT

A

D. 5250 MT

23
Q

Total production of limestone for agriculture use from pre-1980 to 2002 period was ________

A. 1,445, 906 MT
B. 1, 345, 306 MT
C. 1, 245, 706 MT
D. 1, 675, 803 MT

A

A. 1, 445, 906 MT

24
Q

It made from burning limestone with 50 to 55 percent
calcium oxide.

A. High-calcium lime
B. Magnesian lime
C. Oyster-shell lime
D. Slake lime

A

A. High calcium lime

25
Q

A lime derived from high-calcium lime raw materials yields______ calcium oxide.

A. 70 to 80%
B. 80 to 90%
C. 90 to 95%
D. 90 to 98%

A

D. 90 to 98%

26
Q

A bushel of magnesian lime weighs about____ lbs
A. 80
B. 70
C. 60
D. 50

A

B. 70

27
Q

Limestone reserves available for agricultural lime production run to _____
A. 7.890 billion metric tons.
B. 8.540 billion metric tons
C. 6. 567 billion metric tons
D. 9. 867 billion metric tons

A

A. 7.890 billion metric tons

28
Q

Dolomite, is ideally composed of _____percent magnesia, _____percent lime and _____percent carbon dioxide.

A. 32. 60, 30. 40, 37
B. 21.70, 30.40, 47.90
C. 22. 30, 50.40, 22, 30
D. 30, 40, 30

A

B. 21.70, 30.40, 47.90

29
Q

As of 2002, total production of dolomite and dolomitic limestone reaches to _____

A. 10, 450, 000 MT
B. 40, 320, 000 MT
C. 10, 120, 006 MT
D. 70, 340, 720 MT

A

C. 10,120,006 MT

30
Q

Magnesite, a natural form of magnesium carbonate with ideal magnesia content of_______ percent, is an important source of magnesium for fertilizer.

A. 47. 60%
B. 52. 50%
C. 53. 40%
D. 66. 35%

A

A. 47. 60%

31
Q

Gross national production of magnesite over the 24-year rating period reaches to 65,642 MT amounting to __________.

A. P 55, 350, 240
B. P23, 560, 400
C. P 82, 420, 400
D. P10, 788, 072

A

D. P10,788,072

32
Q

Most of the magnesite deposits in the Philippines are within the province of ______.

A. Batangas
B. Laguna
C. Bukidnon
D. Davao Oriental

A

D. Davao Oriental

33
Q

Magnesite deposits in Davao Oriental, including those in Sibuyan Island, Romblon province have reported total reserves of _____.

A. 54. 245 million MT
B. 77. 453 million MT
C. 78. 795 million MT
D. 84. 320 million MT

A

C. 78.795 million MT

34
Q

Over the 12-year active period of pyrite concentrate production, total production reaches to _______ amounting to P493,619,960

A. 1,875, 523 MT
B. 2,320, 450 MT
C. 5, 000, 556 MT
D. 6, 345, 567 MT

A

A. 1,875,523 MT

MROP finals with choices (4 decks)

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