What forms the basis for colorimetric determination?
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What are the products formed after cod analysis?
What forms the basis for colorimetric determination?
What is Acids, Bases salts ?
How is measurement of ph made?
What is the application of hardness date in environmental engineering practice?
Why does a piece of iron float on mercury, but sink in water ?
How does the viscosity vary with temperature?
While standing on railway platform and heating the whistle of an engine coming towards us , we hear the sound increasing; bit when the engine is receding from us it appears to fall why ?
What is the composition of bronze ?
What is OOS $ OOT ?
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What is engymes?