Mention the formula to calculate ph of a solution?
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How is the viscosity of liquid related to its mobility?
What is quick lime ?
Why does the snow on the mountains not melt all at once, not changed into water very slowly?
however ozone is havier than oxygen still ozone is up there in sky why?
Distinguish between flannel and flannelette ?
Why dies thermos flask keep a hot liquid hot and a cold liquid cold ?
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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 dew formed more readily on clear nights than on cloudy ones ?
Explain the difference between the Metals and Metallurgy ?
Explain the Hydrogen and its Compounds ?
Why are substances like caustic soda and calcium chloride called hygroscopic substances ?
What is Oxidation and Reduction?