A Package of Test Questions. Variant 30.

⇐ ПредыдущаяСтр 3 из 3

TEST TASK IN SOIL SCINCE

(Yu. S. Kravchenko L. R. Petrenko)

National Agricultural University

Department of Soil Science & Soil Conservation

Faculty of Ecology and Biotechnology

Speciality: 6. 070800 “Ecology and Environmental Conservation”

Form of tuition: Daytime Students

Semester: 3, Second Year of Study

Discipline: Soil science

Lecturer: PhD, Associate Professor Y. S. Kravchenko

Instructor: PhD, Associate Professor L. R. Petrenko

Approved by the Department Head:

______________________Professor A. D. Balayev

“___”_____________________2007

A Package of Test Questions. Variant 30.

	Question 1. Which are most widespread primary minerals of soils?		Question 6. Which soil characteristics are needed to compute the total porosity of the soil?
1.	Quarts, feldspars, hornblende, and micas	1.	Physical clay content
2.	Calcite, dolomite, hematite, and gypsum	2.	Penetrometer resistance
3.	Olivine, illite, and smectite	3.	SOM content
	Halite, sylvite, and kaolinite	4.	Balk density and particle density of the soil
	Question 2. The hardness of gypsum by the Mohs’ scale is:		Question 7. Available water is within the range of:
1.		1.	PWP & FC
2.		2.	Capillary capacity & FC
3.		3.	Adhesive water content & PWP
		4.	Absolutely soil and adhesive water content
	Question 3. Which of the following minerals are primary?		Question 8. Acid soil’s requirement of liming is determined by:
	sulfur, magnetite, illite	1.	the CEC
	quartz, orthoclase and illite	2.	the acidity of soil solution
	gypsum, halite and hematite	3.	pH KCl and PBS
	saltpeter, limestone and kaolinite	4.	the active acidity of the soil
	Question 4. SOM losses in the Steppe zone of Ukraine are about (mt/ha, yr):		Question 9. Percentage Base Saturation (PBS) is not determined in:
	0. 4	1.	acid soils
	0. 8	2.	soils saturated with bases
	0. 6	3.	podzolized soil
	0. 1		soddy-podzolic soils
	Question 5. Sandy soil’s resistance to tillage(kg/cm²) is in the range of:		Question 10. Total porosity of the soils is determined by:
1.	0, 50	1.	the SOM content
2.	0. 20	2.	TDS content
3.	0. 40	3.	the bulk and solid phase density of the soil
4.	0. 80	4.	soil depth

	Question 11. Hydrolitic acidity is not determined in:	Question 18. Which of the fallowing are the most widespread parent materials in the Forest zone?
	acid soils	Loess
	calcareous soils	Limestones
	podzolized chernozems	Moraine
	soils unsaturated with bases	Glacio - fluvial deposits
	Question 12. Acid soil requirement in liming is determined by:	Question 19. The Soil’s need in liming is determined by:
	The CEC	CEC
	The acidity of soil solution	PH_KCl & PBS
	pH K_Cland BSP	The balk density of the soil
	pH H₂O	The particle density of the soil
	Question 13. As a result of soil erosion, Ukrainian plowland annually loses:	Question 20. Agronomically important soil aggregates include the following size group(mm):
	100 mt/ha of soil	Over 10
	10 -//-	Over 20
	15 -//-	From 10 to 0. 25
	5 -//-	From 10 to 20
	Question 14. Salt – affected soils in Ukraine occupy an area of:	Question 21. Type of grey forest soils is typical for:
	Over 5 mln ha	The Polissya zone
	Over 15 -//-	The Steppe zone
	Below 3 -//-	The Arid Steppe zone
	Below 2 -//-	The Forest – Steppe zone
	Question 15. The most soil exposure for erosion is produced by:	Question 22. What kind of soil acidity is determined using 1N KCl?
	Perennial grasses	Active
	Annual grasses	Actual
	Small grain crops	Exchangeable
	Summer fallow	Total
	Question 16. In soils, unsaturated with exchangeable bases:	Question 23. Soil extract analysis allows to determine:
	pH KCl < pH H₂O	Active soil alkalinity
	pH KCl = pH H₂O	Total soil acidity
	pH KCl > pH H₂O	Total soil alkalinity
	pH KCl = 0. 5 pH H₂O	Soil buffering capacity
	Question 17. Which are the main producers in soil ecology?	Question 24. The number of soil textural groups in Kachinsky’s classification is:
1.	Bacteria
2.	Minerals in the soil
3.	Fungi
4.	Green plants

	Question 25. Name the salt - resistant plants on saline soils:
	Hydrophytes
	Halophytes
	Vegetable crops
	Straw berries
	Question 26. Cation exchange capacity of organic soil colloids:
	Decreases with increasing pH
	Increases with increasing pH
	Is not pH –dependent
	May increase or decrease depending on SOM + type.
	Question 27. Which of the following practices maybe nuked by saline soils?
	Deep plowing
	Subsoiling
	Application of gypsum
	Leaching
	Question 28. Salt-affected soils in Ukraine are encountered on the area of:
	Over 20 mln ha;
	Over 10 -//-
	Over 5 -//-
	3 -//-
	Question 29. Which of the following soils belong to the class of azonal ones?
	Podzolic soils
	Ordinary chernozems
	Sodic soils
	Chestnut soils
	Question 30. The type of grey forest soils is typical for:
	the Forest zone
	the Chernozemic Steppe zone (sub zone)
	the Arid Steppe zone
	the Forest-Steppe zone

⇐ Предыдущая 1 23