Explain the process of spontaneous combustion?
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Difference between an Atom and an Ion ?
What is blank solution?
What is Liquation ?
Give the others form of iron ore.
Why does the filament of an electric lamp glow, when current passes through it ?
Mention a few advantages of photoelectric colorimetric determination.
What is Sublimation ?
How are specific gravity and density related?
Why ph scale range is 14? Why it is not less or not greater than 14? Solution of hcl or hydrogen containing liquid has a ph. But if the solution is kmno4 here nothydrogen power does it ph?
Mention the formula to calculate ph of a solution?
What materials are needed in making glass ?
Why it is advised to boil water before drinking ?