Question
A motorboat in still water travels at a speed of 36
km/hr. It goes 40 km upstream in 1 hours 15 minutes. The time taken by it to cover the same distance down the stream will be :Solution
Speed of the motorboat upstream = 40/(5/4) = 32 km/hr Let the speed of the current be x km/hr ⇒ 36 – x = 32 ⇒ x = 4 km/hr Speed of motor boat downstream = 36 + 4 = 40 km/hr Time taken to cover 40 km at 40 km/hr = 40/40 = 1 hour
The element which becomes deficit in acidic conditions ___
Toxicity of which element leads to the unavailability of iron and zinc
The soil amendment used for the reclamation of Sodic soil is
Match the following:
1. Soil moisture tension ...
The silk fibres are held together in cocoon by a substance known as……………………
Every year to raise awareness about the importance of soil quality for food security, healthy ecosystems, and human well-being, World soil day is cele...
When the contact of soil moisture still decreased below the wilting point in way that the water is held very tightly & may be state of vapour around soi...
Which horizon of the soil profile is the zone where dominant features include the accumulation of clay, iron, aluminum, or humus, alone or in combination?
Which seed class has the minimum genetic purity requirement of 99%?
The ESP of saline soils is _____%
