Can a molecule be divided ?
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Why is the indicator eriochrome black(ebt) shows wine red color at the beginning and blue color at the end?
What is Bases ?
Which element is liquid at ordinary temperature ?
Why is alum added to purify water ?
What are the soldiers in an army, while crossing a bridge ordered to go out of step?
Explain the Boyle?s law ?
What is the reaction that occurs between iodine and sodium thiosulphate?
Which halogen element is used in halogen light?
Why is a newly made quit warmer than an old one ?
How is water purified on large scale, for drinking ?
What is the difference between gas and vapour?
Why is sodium preserved in kerosene oil ?