What is meant by transmittance?
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Explain about Chemical Equilibrium ?
Why ate shadows longer at the end of the day ?
What forms the basis for colorimetric determination?
What is buffer?
When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason????????? When a cool glass rod is suudenly heatd, it cracks. Why?????????
What is Valency ?
However ozone is heavier than oxygen still ozone is up there in sky why?
What is the difference between gas and vapour?
What is the resulting solution when benzene and toluene are mixed ?
What is Filtration ?
Why is sometimes a succession of echoes heard ?
What is si unit of viscosity-coefficient?