Agriculture - Mock Test 42

Question 411

The molecular transfer of gases due to concentration of partial pressure gardient in the soil is termed as?

A) Diffustion B) Mass flow C) Both of the above D) None of the above

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Question 412

The mineralization of organic phosphorus has been studied in relation to?

A) C/N/P B) C/N/S C) C/N/K D) C/N/Ca

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Question 413

The mineral limonite has chemical composition?

A) Fe2O3 B) 2Fe2O3,3H2O C) Fe3O4 D) None of above

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Question 414

The mineral gypsum has chemical composition?

A) CaSO4 B) CaSO4.2H2O C) CaSO4.5H2O D) None of the above

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Question 415

The microbes, which can survive at the temperature 25 - 30 ?C is termed as?

A) Thermoduric B) Mesophylic C) Psychrophylic D) Thermophytic

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Question 416

The maximum size limit of clay fraction is considered to be?

A) 0.02 mm B) 0.002 mm C) 0.0002 mm D) None of the above

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Question 417

The maximum moisture is available to plants at?

A) Field capacity B) Wilting point C) Hygroscopic coefficient D) Saturation

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Question 418

The mass per unit volume of the solid mass of the soil excluding pore space is known as?

A) True density B) Bulk density C) Both a & b D) None of the above

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Question 419

The manifestation of the physical forces of cohesion and adhesion acting within the soil at various moisture contents is called?

A) Soil plasticity B) Soil consistency C) Soil elasticity D) All of these

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Question 420

The major nutrients are?

A) N, P, K B) Fe, Mn, Zn C) Co, Cl, Na D) Cu, Mo, B

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