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Define the uses of buffer method
The buffer method of Shoemaker and coworkers for determining lime requirement is being widely used in India. In this method 5g of soil is added to 5ml of distilled water and 10ml of the extractant buffer (1.8g nitrophenol, 2.5ml triethanolamine, 3.0g potassium chromate, 2.0g calcium acetate, 53.2g calcium chloride dihydrate are dissolved in a litre of distilled water and the pH adjusted to 7.5 with dilute NaOH solution) and stirred continuously for ten minutes or intermittently for 20 minutes.
Explain Precipitation - Antigen-Antibody Interaction If Ag-Ab are present in an appropriate ratio, they form a precipitate in blood. Turbidity is developed, this can be measure
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which is the probable principal source of nitrates and phosphate a. the water cycle b. nitrogen fixation c. bacterial decay d. change in environmental temperature e. changes in lig
discuss the importance of society and culture to existence of man .
which nutrient contains carbon, hydrogen, oxygen, nitrogen and sometimes sulphur and phosphorus?
Why do organisms need water? Organisms need water for the following reasons: (i) All cellular processes need water as a medium. Usually, the reactions that take place in our
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Explain the Complex Cells - Primary Visual Cortex They are sensitive to both orientation and movement. For example, a line or edge with a particular tilt might stimulate a comp
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