Practice Soils and details Questions and Answers

• 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?
• Which type of layer silicate clay minerals demonstrates a structure comprising two silica tetrahedral sheets and two magnesium-dominated tri-octahedral she...
• Which of the following element is mobile in soil but immobile in plants? 
• Which organic component, constituting approximately 10-30% in plant tissues, is often categorized as "very slowly decomposed"?
• A farmer wants to optimize soil organic matter and minimize nitrogen loss. Which practice would be most effective in achieving this balance?
• Which factor significantly influences the decomposition rate of organic matter in soils?
• What is the primary function of humus in soil?
• Why does a high C: N ratio in added organic matter initially slow down nitrogen availability for plants?
• ……………………………. is the prominent member of 1:1 type group in which one tetrahedral and one octahedral layer is present....
• Disorders like Hollow Stem of Cauliflower; Browning of Cauliflower ; Top sickness of Tobacco is caused due to the deficiency of 
• In which soil order is cryopedoturbation, a frost churning process resulting from the freezing and thawing of soil material, predominantly observed?
• Which of the following is the progeny of breeder seed and is responsible for producing certified seed?
• Which seed class has the minimum genetic purity requirement of 99%?
• Which class of seed is exempted from certification?
• What is the color of the tag used for certified seed?
• How many seasons are there for seed certification in India?
• . …………………………….is the prominent member of 1:1 type group in which one tetrahedral and one octahedral layer is present....
• The Indian council of Agricultural Research (ICAR) set up an All India Soil Survey Committee in 1953 which divided the Indian soils into …….. major gro...
• Soil Health Card Scheme was launched in which year?
• The Only nutrient whose form is available as both anion and cationic form is
• Which of the following types of soil is known for exhibiting a characteristic honey-comb structure, typically formed due to specific environmental conditio...