Soils — Practice Quiz

Black soil

Step 1: India has several major soil types including alluvial, black, red, and laterite soils. Step 2: Black soil is also called Regur soil or cotton soil because cotton grows very well in it. Step 3: It is found mainly in Maharashtra, parts of Karnataka, Madhya Pradesh, Gujarat, and Andhra Pradesh. Step 4: Black soil is formed from solidification of lava spread during volcanic activity on the Deccan Plateau. Step 5: Alluvial soil is best for cereals, laterite is not good for agriculture, and red soil is found in drier peninsular India.

Brick

Step 1: Laterite soils are a special type of soil found in hot and humid tropical regions. Step 2: The name 'Laterite' comes from the Latin word 'Later' which means brick. Step 3: This name is given because laterite soil becomes extremely hard like a brick when it dries up. Step 4: Due to this brick-like hardness when dry, it is not very useful for agriculture but makes a good building material. Step 5: Therefore, the correct meaning of 'Later' is brick, not iron, clay, or rock.

Alluvial soil

Step 1: India has various types of soils found in different regions. Step 2: Alluvial soils are formed by the deposition of sediments carried by rivers in river valleys, flood plains, and deltas. Step 3: The Sutlej-Ganga plain has the largest deposit of alluvial soils and is one of the most fertile areas in the world. Step 4: Alluvial soils cover about 40% of India's total area, making them the most widespread soil type. Step 5: Black soils cover about 30%, while red soils and laterite soils cover smaller areas.

Black soil

Step 1: Chernozem is a Russian word meaning 'black earth'. Step 2: It is one of the most fertile soils in the world, rich in humus and calcium. Step 3: It is found in the steppes of Ukraine, Central USA, Central Africa, South America, and Australia. Step 4: The Ukraine's Chernozem region is so productive for wheat that it is called the 'Bread Basket'. Step 5: It is not red soil, desert soil, or laterite soil - all of which have very different characteristics.