Practice Soils and details Questions and Answers

• The  saline  soils  contain  toxic  concentration  of  soluble  salts  in  the  root  zone. These saline soils are also known as……………...
• The soil having   pH value of < 8.5 with EC (electrical conductivity) is > 4.0 millimhos/cm and ESP < 15%  is ____
• Regarding the reclamation of saline soils, which of the following statement is/are correct?
• Which of the following actinomycetes is responsible for nitrogen fixation?
• Under Soil Health Card Scheme, what is the cycle of testing of soil for irrigated area and area from which single sample is to be drawn?
•  ____ soil is also called as regur soil or the soil in which predominant crop grown is Cotton.
• Which of the following group of soil is the largest and most important group of India?
• Soil is a natural body composed of mineral and organic costituents, having definite genesis and a distinct nature of its own. Who amongst the following is ...
• The study of soil from the stand point of higher plants is known as……………………….
• The silk fibres are held together in cocoon by a substance known as……………………
• The Soil moisture potential at permanent wilting point is____
• Bray-1 test is used to determine phosphorous in
• What is the term for the arrangement of soil particles into clumps or aggregates?
• The critical nutrient range in the context of soil fertility is explained by?
• Which mineral is considered highly resistant to weathering due to its densely packed structure and lack of substitutions?
• Flooding is the method used for the reclamation practice in which of the problematic soil?
• Which metamorphic rock is formed from the alteration of shale?
• What chemical process results in the breakdown of silicate minerals by water, leading to the formation of clay minerals and soluble substances?
• Which soil forming process involves the deposition of materials removed from eluvial horizons into lower horizons, leading to the creation of illuvial hori...
• Which process of soil formation is described as the removal of silica from upper layers, concentrating sesquioxides in the solum, and operates favorably in...
• In which soil forming process are sodium ions accumulated on the clay's exchange complex, resulting in the formation of sodic soils?
• Which horizon of the soil profile is the zone where dominant features include the accumulation of clay, iron, aluminum, or humus, alone or in combination?
• Which law defines the relationship between the settling velocity of soil particles and their size in a liquid medium?
• Soil texture is determined most commonly by which method? 
• Which one of the following soil orders has the highest area in India?
• Which term describes the resistance of soil at different moisture levels to mechanical stresses or manipulations?
• Which factor most significantly influences soil bulk density?
• During a prolonged dry spell, a farmer notices soil crusting in the field. What could be a possible consequence of soil crusting on the crops?
• In a well-aggregated soil, how does soil porosity influence the movement of air and water?
• Why do sandy soils generally have higher bulk densities compared to clayey soils?
• What role does organic matter play in influencing soil porosity and bulk density?
• What term is used to describe the process when the parent material is moved or transported primarily by the force of gravity?
• According to USDA classification of salt affected soils; a soil having EC >4 mmho/cm; ESP >15; pH
• Which type of soil water, characterized by occupying larger pores and moving readily under gravity, might contribute to reduced aeration in the soil if pre...
• Which of the following element/substance  leads to deflocculation of soil particles?
• What soil moisture constant refers to the capacity of soil to retain water against the downward pull of gravity?
• Which method measures soil moisture content by drying a sample in an oven and determining the percentage of moisture loss?
• Which soil property is least affected by the size and arrangement of soil particles?
• What is the primary reason for the non-expanding nature of fine-grained micas within the 2:1-type minerals?
• Which clay mineral group is known for its ability to swell and expand when wetted?