71.
Which physical parameter is an index of degree of compaction or looseness of soil?

72.
In a dried plant, an essential element that constitutes the bulk of its weight is

73.
Which chemical is used to differentiate between Light & Heavy minerals?

74.
In GPS, at least how many satellites are required to locate a point?

75.
Nitrogen fertilisation is applied for growth, but its excess

76.
Intrazonal soils are mainly under influence of

77.
The maximum fixation of K occurs

78.
With addition of electrolytes in a soil-colloidal system, thickness of Double Diffuse Layer will

79.
Rocks formed by solidification of molten magma at the surface of the earth are called

80.
Biosuper is a fertilizer containing

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