Ofc porcelain crucible is a high efficiency material and It can be used as a test piece, retort, but the most common use is as a smelting vessel which is used in furnaces or fire with direct flame.
Answer: this is because nutrients are increased by the movement of water.
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Answer:
Because it is absorbed by conc . H . SO , to form ammonium sulphate.
The pH meter measure the concentration of the hydrogen(+) ion, and the concentration of Hydroxide(-). Hydrogen is acidic, Hydroxide is basic.
The answer is D.
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