How do you express the total hardness of water?
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Write the structural formula for edta.
Explain the Hybridigation?
Why is it dangerous to have a coal fire burning with doors and windows closed ?
Mention the formula to calculate ph of a solution?
What is the composition of air ?
With what metal, chocolates, cigarettes etc. are wrapped ?
Why mud houses are cooler in summer and warmer in winter ?
what is the name of the material used in making the plates used for serving food in hotels?
What is Atomic number?
What is glacial acetic acid? What are its uses?
What is oxy-hydrogen flame ?
Why does the filament of an electric lamp glow, when current passes through it ?