Question
15 liters are drawn from a cask full of wine and then
filled with water. This operation is performed two more times. The ratio of the quantity of wine now left in the cask to that of the water is 8:27. How much wine did the cask hold originallySolution
Let the quantity of the wine in the cask originally be x liters. Then, quantity of wine left in cask after 3 operations = [x {1 - (15/x)}3] liters Therefore, [x {1 - (15/x)}3Â /x] = 8/27 Â [1 - (15/x)}2] = (2/3)3 x = 45 The original quantity of cask = 45 litersÂ
The silk fibres are held together in cocoon by a substance known as……………………
Saline soils could be improved by:-
Largest soil order in world is
During a prolonged dry spell, a farmer notices soil crusting in the field. What could be a possible consequence of soil crusting on the crops?
What is soil sickness?
What is the primary function of humus in soil?
Which of the following groups of nutrients is absorbed by plants only in anionic form?
………………………….. is designed to break up hard layers or pans without bringing them to the surface.
...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...
According to USDA classification of salt affected soils; a soil having EC >4 mmho/cm; ESP >15; pH
Relevant for Exams:
