What is the unit of conductance?
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Explain the following ? Matter, Element, Atom, Compound, Molecule, Mixture, Physical change, Chemical change
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 not hydrogen power does it PH? explain plz....
Why does a freely suspended magnetic needle always point North and South ?
What materials are needed in making glass ?
Why ate shadows longer at the end of the day ?
Difference between heavy hydrogen , Atom Hydrogen and Hydrogen Ion ?
What is the colour of diamond, when pure ?
However ozone is heavier than oxygen still ozone is up there in sky why?
Why are leaves of trees green ?
what is the difference between base & nucleophile?
Why is sometimes a succession of echoes heard ?
what is the difference between heat and temperature?