Explain extraction of ephedrine from a mineral block?
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What is fluidity of a liquid?
Which is the hardest substances know ?
Why ph scale range is 14?
Why is a newly made quit warmer than an old one ?
Acid value definition is number milligrams of koh required to nuetralise the acid present in one gram oil & fats but why not use naoh for nuetralisation?
What is an alloy ?
in Einstein's mass energy relation e=mc2 for what is c used or why is light required for reactions. Because the reactions are with help of neutrons
Differentiate between organic and inorganic chemistry?
Why are the titration involving edta carried out slowly towards the end point?
What causes smoke to curl up into the air ?
Why is a halo formed round the moon, when the sky is clear ?
Why does the filament of an electric lamp glow, when current passes through it ?