What is density of a liquid?
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why helium does not react with other elements?
What is the composition of air ?
What are the advantages of soapy detergents over soapless
What are the uses of Alloy ?
pH is having unit?
Why is clinical thermometer used in preference to and ordinary Fahrenheit thermometer ?
Why does a diamond cut glass?
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 ?
What is quick lime ?
Explain the Electrolytic Method ?
What is Potential Impurities?
Why has the continuous supply of heat no effect on the rise of temperature after boiling point