Pick letter that best applies 1. _________ force describe the attraction of wate
ID: 289855 • Letter: P
Question
Pick letter that best applies
1. _________ force describe the attraction of water molecules for each other?
A. Adhesion B. Cohension C. Surface tension D. osmotic E. Volumetric
2. Soil infiltration capacity is influenced by all of the following factors except?
A. Texture B. Porosity C. organic matter D. Bulk density E. None of the above
3. The rate at which water percolates into the soil is termed
A. soil water retention capacity B. percolation velocity C. Infiltration capacity D. soil water movement capacity E. water translocation capacity
4. Certain field condtions enhance capillary rise of soil water. Which of these conditions will NOT promote capillary rise?
A.Evaporation at the soil surface B. Freezing at the soil surface C. osmotic movemtn of water by plants D. saturated condition E. fine textured soil
5.Which of these is NOT a force affecting the free energy of water in the soil?
A. matrix force B. osmotic force C. gravitational force D. water molecule force E. None of the above
6. The reason why water molecules attract both negative and positive charged surfaces in the soil is because of
A. the polarity of water molecules B. the liquid nature of water C. water is a universal solvent D. water molecules are highly mobile in soil
E. water molecules can chnage phase
Explanation / Answer
1)
b) Cohesion = it is the force acting in between the same type of particles of the substance such as the force of attraction between the water molecules or the molecules of honey etc much cohesion much viscosity of the substance
2)
d) None of the above
3).
b) Percolation velocity = it is the rate of movement of water along the column of soil is called as percolation velocity it helps in recharging the soil, helps in leaching the nutrients to the roots
4).
C. osmotic movemtn of water by plants= this process is just to transfer the solution from the less concentrated to the high concentrated zones via semipermeable membraines and having not any link with adhesion oriented capillary rise
5)
D) water molecule force = The free energy of water is defined as the free energy per mole of water. this also equaivalent to the potential for a substance to react or move, or, to perform work. Work results when an external force applied on an object causes it to move from one place to another water molecular force is internal force
6)
A. the polarity of water molecules= Water molecule is the polar in nature it gives negative charge when it has ions on oxygen and it gives positive charge when it has ions of hydrogens