Insights Static Quiz -208, 2019–Geography

Solution: a)

Chemically, the black soils are rich in lime, iron, magnesia and alumina. They also contain potash. But they lack in phosphorous, nitrogen and organic matter.

Laterite soil – With rain, lime and silica are leached away, and soils rich in iron oxide and aluminium compound are left behind. These soils are poor in organic matter, nitrogen, phosphate and calcium,

while iron oxide and potash are in excess.

Solution: c)

Red soil develops on crystalline igneous rocks in areas of low rainfall in the eastern and southern part of the Deccan Plateau. Along the piedmont zone of the Western Ghat, long stretch of area is occupied by red loamy soil. Yellow and red soils are also found in parts of Odisha and Chhattisgarh and in the southern parts of the middle Ganga plain. The soil develops a reddish colour due to a wide diffusion of iron in crystalline and metamorphic rocks. It looks yellow when it occurs in a hydrated form. The fine-grained red and yellow soils are normally fertile, whereas coarse-grained soils found in dry upland areas are poor in fertility. They are generally poor in nitrogen, phosphorous and humus.

Solution: d)

Solution: d)

Important tributaries of Kaveri river are Shimsa, Hemavathi, Honnuhole, Arkavathi, Kapila, Lakshmana Theertha, Kabini, Lokapavani, Bhavani, Noyil and Amaravathy.

Manjra is the tributary of Godavari River.

Bhima and Koyna are the tributaries of Krishna River.

Solution: c)

Submergent Coasts are those that have been flooded by ocean waters because of a relative rise in the elevation of sea level at that location. The rise in sea level can be either the result of an increase in the volume of water in the ocean basins or the result of the land surface sinking, both of which create an apparent rise in the elevation of sea level. Features of a submergent coastline are drowned river valleys or rias and drowned glaciated valleys or fjords.

Estuaries are often the drowned mouths of rivers.

The Western Coastal Plains of the Indian subcontinent are examples of submergent coastline.

Emergent coasts are a result of local tectonic uplift of the land surface or a fall in the elevation of sea level because of a reduction in the water volume of ocean basins. Quite often, emergent coasts have rocky coastlines with cliffs and nearly flat platforms that extend inland where older coastal plains have been tectonically raised and are now elevated above the modern land and water interface.

The emergent coastline may have several specific landforms:

• Raised beach
• Wave cut platform
• Sea cave