Soil Science

The Deccan Plateau is primarily formed from volcanic basalt rocks and is characterized by Black Cotton Soil (also known as Regur or Chemozem). These soils are rich in iron, lime, and magnesium, and are ideal for cotton cultivation. Alluvial soils (A) are found in river plains, Red soils (C) in peninsular region with low rainfall, and Laterite soils (D) in areas with high rainfall.

Black cotton soil (regur) is predominantly found in the Deccan Plateau region, formed from weathering of basaltic lava rocks. This soil type is ideal for cotton cultivation. The Great Indian Plains have alluvial soil, Coastal Belts have sandy soil, and Western Ghats have laterite soil - not black cotton soil.

True soil requires organic matter from living organisms. The moon's surface material is called regolith - crushed rock and dust from meteorite impacts, not soil. Option A describes fossil-based soil on Earth, B incorrectly claims similarity to Earth sand, and C describes hardened magma, not lunar surface material.

Black cotton soil (regur) is predominantly found in the Deccan Plateau region, formed from weathered volcanic basalt rocks. The Great Indian Plains have alluvial soil, Coastal Belts have sandy soil, Western Ghats have laterite soil.

Lateritic soil forms in tropical areas with high rainfall and temperatures through intense leaching that removes soluble minerals, leaving iron and aluminum oxides. This gives the soil its characteristic red color and low fertility.

Red soil is typically high in iron oxide and aluminum, making it acidic, nutrient-poor, and difficult to cultivate compared to other soil types. Alluvial soil (deposited by rivers) is very fertile, black soil (regur) is excellent for cotton cultivation, and sandy soil, while less fertile, is easier to work with than hard, compacted red soil. Red soil requires significant amendments for agriculture.

Black soil (regur soil) has high clay content and excellent water-retention capacity due to its colloidal nature. This means it needs less irrigation compared to other soil types. It is ideal for cotton cultivation and is found in Deccan plateau regions.

Black cotton soil (regur soil) is predominantly found in the Deccan Plateau region, formed from weathered volcanic basalt rocks. This soil type is excellent for cotton cultivation. The Coastal Belts, Western Ghats, and Great Indian Plains have different soil compositions dominated by alluvial, laterite, or other soil types.

It is a macronutrient & is an essential constituent of the proteins. Indian soil is mainly deficient in nitrogen.

These are large roots on all sides of a shallow rooted tree. Classically they are found in nutrient-poor rainforest soils and do not go deeper in the layers of earth.

This is the correct answer as waste land includes rocky, arid and desert areas.

This is the correct answer. In the upper reaches of the river valley, i.e. near the place of the break of slope, the soils are coarse. Such coarse alluvial soils are more common in piedmont plains such as Duars, Chos and Terai.

This is the correct answer as black regur soil is also known as black cotton soil.

This is the correct answer as black soil is made up of clayey material that becomes sticky when wet and is difficult to work on unless tilled immediately after the first shower or during the pre-monsoon period.

This is the correct answer. Alluvial soil has an adequate mix of potash, phosphoric acid and lime which makes it very fertile.