Question
A boat running downstream covers a distance of 60 km in
6 hrs and covering the same distance upstream in 15 hrs. What is the speed of a boat in still water?Solution
Downstream speed = 60/6 = 10 km/hr Upstream speed = 60/15 = 4 km/hr So speed of boat in still water = (10 + 4)/2 = 7 km/hr
Element involved in nitrogen fixation
The Soil moisture potential at permanent wilting point is____
Which of the following is the progeny of breeder seed and is responsible for producing certified seed?
Which of the following crop is/are soil salinity tolerant?
Which organic component, constituting approximately 10-30% in plant tissues, is often categorized as "very slowly decomposed"?
Which property of soil usually reflects the extent of leaching and weathering of soils?
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 ...
The soils of grassland ecosystems, characterized by a thick, dark surface horizon comes under which soil order?
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 ...
Which of the following element is mobile in soil but immobile in plants?Â
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