19) Which one of the following soils found in India is the most useful for agriculture?

20) Which one among the following is a primary rock?

21) When a ship crosses the International Date Line From West to East,

22) Which of the following rivers does not form any delta at its mouth?

23) Consider the following statements:
i.The shelter of Bedouins is known as Khaimas.
ii.The shelter of Kirghiz is called as kraals.
iii.The cattle-shade of the Bakarwals of Jammu and Kashmir is known as Kothas.
iv.The Innuits shelters