Practice Soils and details Questions and Answers

• Who is recognized as the “Father of Soil Science” and “Father of Modern Pedology”?
• Which scientist formulated the equation S = f (Cl,O,R,P,T)  for soil formation?
• What percentage of organic matter is present in soil by volume?
• Which law states that plant growth is limited by the nutrient in shortest supply?
• The term “Catena” in soil science was coined by:
• Which branch of soil science focuses on the influence of soils on living organisms?
• The Earth’s crust layer rich in silicates and aluminum is called:
• Which element constitutes the highest percentage in the Earth’s crust?
• Who is known as the “Father of Indian Soil Science”?
• The process of leaching calcium carbonate from soil is termed:
• Which horizon is characterized by maximum eluviation of clay and iron?
• The “Law of Maximum” was proposed by:
• Which soil forming process leads to acidic soils with bleached A horizons?
• The C horizon in a soil profile primarily consists of:
• Which term describes the unconsolidated layer of rock fragments above bedrock?
• Which process involves the deposition of leached materials in lower soil horizons?
• Which soil process dominates in cold, humid climates with coniferous vegetation?
• Which scientist isolated the bacteria ,Bacillus radicola?
• The O horizon in soil is typically absent in:
• Which equation represents Dokuchaev’s original soil formation factors?
• Which soil-forming factor is classified as “passive”?
• The process of humus formation from organic matter is called:
• Which process leads to the accumulation of silica in soil?
• Salinization commonly occurs in which type of region :
• Which horizon is a transition between A and B Horizons ?
• According to the USDA classification, which particle size defines “clay”?
• A soil with 30% sand, 40% silt, and 30% clay is classified as:
• Which soil structure type is characterized by horizontal, plate-like aggregates?
• What is the particle density (g/cm³) of clay, as per the document?
• The instrument ,“Tensiometer” is used to measure , which parameter :
• Which weathering process involves the breakdown of rocks by freezing and thawing of water?
• Which rock type is formed from the cooling and solidification of magma below Earth’s surface?
• Which mineral is a primary component of limestone?
• Which soil texture class has the highest porosity?
• The term “Regolith” , is used to refer which of the following :
• Which process describes the mixing of soil by earthworms?
• Which sedimentary rock is formed from compressed plant remains?
• Which soil structure is considered ideal for cultivation?
• The ISSS classification system categorizes “coarse sand” as:
• Which mineral is considered as a secondary mineral?