What are the products formed after cod analysis?
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Why titration in which hcl and h2so4 is use?
When the heat rays from the sun area focused on a piece of black cloth by means of a lens, the cloth catches fire. Why ?
what is ppm?how to prepare 75 ppm?
Why does a dog hang out his tongue, when it is hot ?
Why is estimation of copper done at 620 nm wave length?
What is density of a liquid?
why bottles of Hazardous chemicals or solvent are available in round shaped only?
What is buffer?
Explain the how to make Alloys?
What is Valency ?
describe the lewis dot structure of Mg2+?
State beer’s law.