Gce Model Questions Vol1 2021 Agricultural Science Question 2

Practice essay / theory question 2 from the 2021 Gce Model Questions Vol1 Agricultural Science examination. This question covers Soil Science .

Gce Model Questions Vol1 2021 Agricultural Science Essay / Theory

Topic: Soil Science

Question 2 GCE_MODEL_QUESTIONS_VOL1 • 2021 • AGRICULTURAL_SCIENCE • essay

The diagram shows the laboratory set‑up used for the gravimetric hydrometer method of soil‑texture analysis.

Question Parts

( a )

State the principle on which the hydrometer method determines the proportions of sand, silt and clay in a soil sample.

( b )

Using the diagram, outline the step‑by‑step procedure for determining the percentage of sand, silt and clay in a 50 g air‑dried soil sample.

( c )

The hydrometer reading at 40 s is 1.025 g cm⁻³ and at 2 h is 1.015 g cm⁻³. Assuming the volume of the suspension is 1000 cm³ and the density of water is 1.000 g cm⁻³, calculate the approximate percentages of sand, silt and clay in the sample.

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About This Question

This is Gce Model Questions Vol1 2021 Agricultural Science Question 2. It is one of the essay questions from the 2021 Gce Model Questions Vol1 Agricultural Science examination.

The question covers Soil Science .

View More Gce Model Questions Vol1 2021 Agricultural Science Questions More Gce Model Questions Vol1 Practice Questions Back to Questions

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