What is the difference between fractionation and distillation?
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What is the basicity/acidity of na2co3
why bottles of Hazardous chemicals or solvent are available in round shaped only?
Why is ammonia-ammonium chloride buffer added?
how to do heavy metal test for colour sample?
Though the secondary cell can be recharged again and again, still they have a lifetime. Why?
which of the following is the best conductor of electricity?
Explain the Charle?s law ?
If the stopper if a bottle has stuck, sometimes it may be removed by heating the neck, why ?
Why does a white paper appear white, when light is not to fall on it ?
Which wavelengths are visible to human eye?
What are the products formed after cod analysis?
What is flash point ?