SCSC 301 EXAMS SCRIPT 2026/2027 QUESTIONS AND
SOLUTIONS RATED A+
✔✔Soil formation processes - ✔✔Additions losses translocation transformation
✔✔Primary minerals - ✔✔Mica feldspar quartz
✔✔Secondary minerals - ✔✔Clays oxides salts
✔✔Eluviation - ✔✔Loss of material
✔✔Illuviation - ✔✔Accumulation of material
✔✔Bt horizon - ✔✔Clay accumulation
✔✔Master horizons order - ✔✔O A E B C
✔✔Epipedon - ✔✔Surface diagnostic horizon
✔✔Endopedon - ✔✔Subsurface diagnostic horizon
✔✔Mollic epipedon - ✔✔Dark thick high base
✔✔Umbric epipedon - ✔✔Dark low base
✔✔Ochric epipedon - ✔✔Light or thin
✔✔Histic epipedon - ✔✔Organic
✔✔Albic horizon - ✔✔E horizon light colored
✔✔Cambic horizon - ✔✔Bw weak development
✔✔Argillic horizon - ✔✔Bt high clay
✔✔Kandic horizon - ✔✔Bt low base
✔✔Oxic horizon - ✔✔Bo oxides
✔✔Spodic horizon - ✔✔Bhs humus and oxides
✔✔Calcic horizon - ✔✔Bk carbonates
, ✔✔Gypsic horizon - ✔✔By gypsum
✔✔Natric horizon - ✔✔Btn sodium clay
✔✔Soil orders youngest to oldest - ✔✔Entisol Inceptisol Alfisol Ultisol Oxisol
✔✔Entisol - ✔✔No B horizon
✔✔Inceptisol - ✔✔Bw horizon
✔✔Mollisol - ✔✔Mollic surface
✔✔Ultisol - ✔✔Highly weathered Bt
✔✔Oxisol - ✔✔Oxic horizon tropical
✔✔Spodosol - ✔✔Bhs horizon
✔✔Vertisol - ✔✔Shrink swell clay
✔✔Aridisol - ✔✔Dry with salts
✔✔Histosol - ✔✔Organic soil
✔✔Andisol - ✔✔Volcanic
✔✔Gelisol - ✔✔Permafrost
✔✔Soil moisture regimes - ✔✔Aquic udic ustic aridic xeric
✔✔Soil temperature regimes - ✔✔Thermic mesic frigid cryic gelic
✔✔Taxonomic levels - ✔✔Order suborder great group subgroup family series
✔✔Consociation - ✔✔Most specific mapping unit
✔✔Complex - ✔✔Mixed soils
✔✔Association - ✔✔Cannot separate soils
✔✔Undifferentiated group - ✔✔Least specific
✔✔Land capability classes - ✔✔I best VIII worst
SOLUTIONS RATED A+
✔✔Soil formation processes - ✔✔Additions losses translocation transformation
✔✔Primary minerals - ✔✔Mica feldspar quartz
✔✔Secondary minerals - ✔✔Clays oxides salts
✔✔Eluviation - ✔✔Loss of material
✔✔Illuviation - ✔✔Accumulation of material
✔✔Bt horizon - ✔✔Clay accumulation
✔✔Master horizons order - ✔✔O A E B C
✔✔Epipedon - ✔✔Surface diagnostic horizon
✔✔Endopedon - ✔✔Subsurface diagnostic horizon
✔✔Mollic epipedon - ✔✔Dark thick high base
✔✔Umbric epipedon - ✔✔Dark low base
✔✔Ochric epipedon - ✔✔Light or thin
✔✔Histic epipedon - ✔✔Organic
✔✔Albic horizon - ✔✔E horizon light colored
✔✔Cambic horizon - ✔✔Bw weak development
✔✔Argillic horizon - ✔✔Bt high clay
✔✔Kandic horizon - ✔✔Bt low base
✔✔Oxic horizon - ✔✔Bo oxides
✔✔Spodic horizon - ✔✔Bhs humus and oxides
✔✔Calcic horizon - ✔✔Bk carbonates
, ✔✔Gypsic horizon - ✔✔By gypsum
✔✔Natric horizon - ✔✔Btn sodium clay
✔✔Soil orders youngest to oldest - ✔✔Entisol Inceptisol Alfisol Ultisol Oxisol
✔✔Entisol - ✔✔No B horizon
✔✔Inceptisol - ✔✔Bw horizon
✔✔Mollisol - ✔✔Mollic surface
✔✔Ultisol - ✔✔Highly weathered Bt
✔✔Oxisol - ✔✔Oxic horizon tropical
✔✔Spodosol - ✔✔Bhs horizon
✔✔Vertisol - ✔✔Shrink swell clay
✔✔Aridisol - ✔✔Dry with salts
✔✔Histosol - ✔✔Organic soil
✔✔Andisol - ✔✔Volcanic
✔✔Gelisol - ✔✔Permafrost
✔✔Soil moisture regimes - ✔✔Aquic udic ustic aridic xeric
✔✔Soil temperature regimes - ✔✔Thermic mesic frigid cryic gelic
✔✔Taxonomic levels - ✔✔Order suborder great group subgroup family series
✔✔Consociation - ✔✔Most specific mapping unit
✔✔Complex - ✔✔Mixed soils
✔✔Association - ✔✔Cannot separate soils
✔✔Undifferentiated group - ✔✔Least specific
✔✔Land capability classes - ✔✔I best VIII worst
