Question
Of the four numbers, whose average is 75, the first is
one-fourth of the sum of the last three. The first number isSolution
Let numbers be a, b, c & d Now according to the question, (a + b + c + d)/4 = 75 or a + b + c + d = 300 ................ (1) a = (1/4) (b + c + d) or b + c + d = 4a .......................... (2) Putting equation (2) in equation (1), we will get a + 4a = 300 or 5a = 300 or a = 60
Soil is a natural body composed of mineral and organic costituents, having definite genesis and a distinct nature of its own. Who amongst the following ...
…………………..measures the proportion of cation exchange sites occupied by sodium.
Which soil property is least affected by the size and arrangement of soil particles?
Acidic soils are generally found in the regions of
What chemical process results in the breakdown of silicate minerals by water, leading to the formation of clay minerals and soluble substances?
Which of the following element is mobile in soil but immobile in plants?Â
The liming material generally used for reclaiming acid soilsÂ
In which soil forming process are sodium ions accumulated on the clay's exchange complex, resulting in the formation of sodic soils?
Which soil forming process involves the deposition of materials removed from eluvial horizons into lower horizons, leading to the creation of illuvial h...
Soil texture is determined most commonly by which method?Â
