What is the chief commercial use of Phosphorus ?
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What is pka of acid?
Acid rain is caused due to pollution of atmosphere by
Is water element or compound ?
What is the principle involved in conductometric titration?
What is the difference between fractionation and distillation?
Which gas is used, in laboratories etc. for burners ?
What is positive testing in relation to chemistry? For example, the sentence reads "Sample solutions are solutions known to contain one of each of the following ions, silver ion, Ag+(aq), barium ion, Ba2+(aq), and iron (III) ion, Fe3+(aq). Testing solutions are the solutions containing a polyatomic ion that can react with one of the metal ions to give a positive test." I am then asked to define what a "positive test" is. I am currently a student who is pretty new to chemistry, please try and make your answer as simply as possible. Thanks for the help.
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 Distillation ?
What is Distillation ?
what is the difference between vector and tensor?
How to do acidity alkanity test ofsodium chloride