Neco Model Questions Vol1 2019 Geography Question 42

Practice objective / multiple choice question 42 from the 2019 Neco Model Questions Vol1 Geography examination.

Neco Model Questions Vol1 2019 Geography Objective / Multiple Choice Medium Difficulty
Question 42 NECO_MODEL_QUESTIONS_VOL1 • 2019 • GEOGRAPHY • objective

A soil sample has a bulk density of \(1.4\ \text{g cm}^{-3}\) and a particle density of \(2.65\ \text{g cm}^{-3}\). The soil contains \(5\%\) organic matter by weight, and each percent of organic matter reduces the particle density by \(0.02\ \text{g cm}^{-3}\). (i) Determine the effective particle density of the soil. (ii) Calculate the effective porosity. (iii) If field capacity corresponds to \(50\%\) of the porosity, find the volumetric water content at field capacity expressed as a percentage.

Answer Options

A. Effective particle density = 2.45 g cm⁻³; effective porosity = 43.5 %; field‑capacity water content = 21.8 %
B. Effective particle density = 2.60 g cm⁻³; effective porosity = 44.0 %; field‑capacity water content = 22.0 %
Correct Answer C. Effective particle density = 2.55 g cm⁻³; effective porosity = 45.1 %; field‑capacity water content = 22.6 %
D. Effective particle density = 2.50 g cm⁻³; effective porosity = 46.2 %; field‑capacity water content = 23.1 %
Correct Answer
C
Correct Option:
Effective particle density = 2.55 g cm⁻³; effective porosity = 45.1 %; field‑capacity water content = 22.6 %

About This Question

This is Neco Model Questions Vol1 2019 Geography Question 42. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Geography examination.

Difficulty level: Medium .

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