How are ph and pka related?
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What is the purpose of adding urea?
However ozone is heavier than oxygen still ozone is up there in sky why?
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 ?
Why is salt thrown on the frozen road ?
What is Evaporation ?
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?
which gas is used in preaparation of bit salt
Why does a freely supended magnetic needle always point North and South ?
Any reaction can be reversed by applying potential. But, why can't we recharge the primary cell?
What is phase transfer catalyst?
What are the constituents of cements?
Distinguish between flannel and flannelette ?