Insights Static Quiz -297, 2019–Geography

Solution: b)

As per the Census, 2011 the child sex ratio (0-6 years) has shown a decline from 927 females per thousand males in 2001 to 919 females per thousand males in 2011.

As per the census 2011, Arunachal Pradesh has the highest child sex ratio among the Indian states i.e. 972.

Source

Solution: c)

Shifting cultivation is a ‘slash and burn’ agriculture (Use of fire for clearing the land). Farmers clear a patch of land and produce cereals and other food crops to sustain their family. When the soil fertility decreases, the farmers shift and clear a fresh patch of land for cultivation. This type of shifting allows Nature to replenish the fertility of the soil through natural processes; land productivity in this type of agriculture is low as the farmer does not use fertilisers or other modern inputs.

Locally referred to as jhum cultivation, this practice is considered as an important mainstay of food production for a considerable population in northeast India in States like Arunachal Pradesh, Nagaland, Mizoram, Meghalaya, Tripura and Manipur.

Solution: b)

Migingo is a small rock Island, located in Lake Victoria which is the largest lake in Africa and the

largest Tropical Lake in the whole world.

For over a decade, Migingo has been a source of tension between Uganda and Kenya, who have

been unable to decide to whom it really belongs.

Solution: a)

All waters in nature, whether rain water or ocean water, contain dissolved mineral salts. Salinity is the term used to define the total content of dissolved salts in sea water. It is calculated as the amount of salt (in gm) dissolved in 1,000 gm (1 kg) of seawater. It is usually expressed as parts per thousand (o/oo) or ppt. Salinity is an important property of sea water. Salinity of 24.7 o/oo has

been considered as the upper limit to demarcate ‘brackish water’.

In the land locked Red Sea, salinity is as high as 41o/oo, while in the estuaries and the Arctic, the salinity fluctuates from 0 – 35 o/oo, seasonally.

The salinity variation in the Pacific Ocean is mainly due to its shape and larger areal extent.

The highest salinity is recorded between 15° and 20° latitudes.

Maximum salinity (37 o/oo) is observed between 20° N and 30° N and 20° W – 60° W. It gradually decreases towards the north.

Solution: d)

Important Drainage Patterns

(i) The drainage pattern resembling the branches of a tree is known as “dendritic” the examples of which are the rivers of northern plain.

(ii) When the rivers originate from a hill and flow in all directions, the drainage pattern is known as ‘radial’. The rivers originating from the Amarkantak range present a good example of it.

(iii) When the primary tributaries of rivers flow parallel to each other and secondary tributaries join them at right angles, the pattern is known as ‘trellis’.

(iv) When the rivers discharge their waters from all directions in a lake or depression, the pattern is known as ‘centripetal’.