How is a soil with an ESP greater than 15 usually classified?
Correct answer A. Sodic soil
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Agriculture MCQs
Page 20 of Agriculture multiple-choice questions with answers. Tap an option to check yourself.
Page 20 of 135
What is the pF unit used to measure?
Correct answer B. Negative soil water potential
What does the chemical symbol Na stand for?
Correct answer C. Natrium
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What is the moisture content below which a cohesive soil no longer sticks to metal tools called?
Correct answer A. Sticky limit
What is the mean annual precipitation of the tundra region?
Correct answer B. 0-50 cm
Which equation represents the formation of ozone?
Correct answer B. O2 + O =O3
Which metals make up the earth’s core?
Correct answer B. Fe & Ni
Corrosiveness of water indicates which of the following?
Correct answer C. Both A & B
Cyclic salts consist mostly of which ion?
Correct answer A. Cl-
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What is the total area of salt-affected soils in Pakistan?
Correct answer A. 6.3 m ha
What are plants that tolerate salt called?
Correct answer C. Halophytes
How is gold classed as a mineral?
Correct answer C. Native element
Which instrument is used to determine sodium and potassium?
Correct answer C. Flame photometer
What is mainly responsible for soil erosion in the Thal and Cholistan deserts?
Correct answer A. Wind
When determining soil texture, what is the effect of adding sodium hexametaphosphate to the soil?
Correct answer A. Dispersion of soil particles
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What is the build-up of excess nutrients in water that leads to oxygen depletion called?
Correct answer A. Eutrophication
How is chromium (Cr) classed?
Correct answer C. Heavy metal
What percentage of nitrogen does ammonium sulphate fertiliser contain?
Correct answer A. 21
In what form is sulphur available to plants?
Correct answer B. SO4 2-
Gravitational water is present in:
Correct answer B. Macropores