Soil colloid - Study guides, Class notes & Summaries

A soil with a pH of 8.0, 10% exchangeable sodium, and 5 dS/m conductivity is: -saline, non-sodic -non-saline, non-sodic -non-calcareous -saline, sodic -non-saline, sodic correct answer: saline, non-sodic The most economical means of decreasing the soil pH from 7.0 to 4.5 in a non-calcareous soil is by the addition of: -neutral salts -gypsum -ferrous sulfate -nitrogen fertilizer -agricultural limestone correct answer: ferrous sulfate With the passage of time, the soil pH t...

Smectite and vermiculite are - Answer-made up of layers consisting of 2 tetrahedral sheets and 1 octahedral sheet The interlayer of mica is dominated by - Answer-K+ ions Isomorphic substitution refers to Ion substitution of a(n) - Answer-cation for another with a different charge, but similar size pH-dependent, or variable charged, colloids - Answer-can result from protonation and deprotonation at colloid edges The colloid type exhibiting the lowest cation exchange capacity in soils ...

The editor rejected the illustrations saying the color was too drab. The illustrations lacked -Contrast -Detail -Variation -Luster - Answer-Luster The lawyer found the witness's testimony assailable from certain angles. Assailable means -Morbid -Hollow -Rescindable -Vulnerable - Answer-Vulnerable Anna was invariably late for her classes. Invariably means -Never -Rarely -Occasionally -Constantly - Answer-Constantly The association of a roadrunner to a coyote is that the coyote -H...

-Evaporation of water from the plant -Synthesis of organic substances in the plant -Movement of organic and inorganic substances from soil to the plant - answerEvaporation of water from the plant The bending of a wave around an obstacle is known as -Diffraction -Deflection -Refraction -Reflection - answerDiffraction Which of these conditions is associated with smoking? -Esophageal Varices -Tonsillitis -Emphysema -Blindness - answerEmphysema A gram stain is an important technique us...

NLN PAX Practice Exam Questions With 100% Correct Answers The editor rejected the illustrations saying the color was too drab. The illustrations lacked -Contrast -Detail -Variation -Luster - answerLuster The lawyer found the witness's testimony assailable from certain angles. Assailable means -Morbid -Hollow -Rescindable -Vulnerable - answerVulnerable Anna was invariably late for her classes. Invariably means -Never -Rarely -Occasionally -Constantly - answerConstantly The assoc...

NLN PAX Practice Exam Questions With 100% Correct Answers The editor rejected the illustrations saying the color was too drab. The illustrations lacked -Contrast -Detail -Variation -Luster - answerLuster The lawyer found the witness's testimony assailable from certain angles. Assailable means -Morbid -Hollow -Rescindable -Vulnerable - answerVulnerable Anna was invariably late for her classes. Invariably means -Never -Rarely -Occasionally -Constantly - answerConstantly The assoc...

Know the two principal chemical elements in organic chemical compounds -:- Carbon & Hydrogen (maybe Oxygen) Know the two properties that make certain types of organic chemicals highly water soluble. -:- Polarity & Electrical Charge Understand basically the impediments to water solubility for non-ionic hydrophobic organic compounds. -:- a. Solubility: The ease with which substances dissolve in water; the degree to which organic contaminants impact soil and water quality often is relat...

Final Exam CRSS 3060 Soils & Hydrology, Questions and Correct Answers, With Complete Solution 2024. soil composition percentages 50% inorganic matter, 5% organic matter, and 45% pore space (water/air) Georgia Regions: Valley & Ridge Ultisol & Inceptisols on steep sedimentary ridges and flat valleys Georgia Regions: Blue Ridge Ultisols n Inceptisols on steep metamorphic mountains Georgia Regions: Piedmont Ultisols on dissected rolling igneous and metamorphic rock Georgia Regions: Sand hi...

1 CRSS 3060 EXAM 1 STUDY GUIDE | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ What is soil? Correct Answer: 1. The surface layer of Earth that supports plant life, any place for growth or development, ground or earth 2. Soil = Air + Water + Solids 3. Sand, Silt, Clay What are the five functions of soil? Correct Answer: 1. Medium for plant growth 2. Water supply & purification 3. Nature's recycling system 4. Habitat for organisms 5. Engineering medium How many inc...

An important function of micro-organisms in soils is the fixation of correct answer: Nitrogen The well decomposed organic matter in the soil that is composed of ligno-proteins and contributes to the cation exchange capacity is: correct answer: Humus Bacteria are important to the decomposition of residues : correct answer: Under slightly acid to neutral conditions Assuming favorable climatic and soil environment conditions, the factor most often controlling the rate of residue decompo...