What is pka of acid?
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Why ph scale range is 14? Why it is not less or not greater than 14?
Why ate the electric fuses used in an electric current ?
What is the metal used to extract copper from the solution of copper sulphate?
What is the unit of ph?
Why dies the water boil below 100 o C on the top of a mountain ?
Why is it more efficient for a labourer to raise bricks up to a brick layer by the use of a rope and pully than by carrying them up a ladder ?
Explain about Oxide ?
Is air mixture or compound ?
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 ?
Is diamond element ?
Which metal is used for coating the backs of the mirrors ?
How are pka and strength of a weak acid related?