Why is the indicator eriochrome black(ebt) shows wine red color at the beginning and blue color at the end?
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What is the white precipitate produced at the end of point?
Why Nitric acid can be stored in Aluminium containers?
Why ph scale range is 14?
is urea addition affecting the COD (chemical oxygen demand) & BOD (Biological oxygen demand)level? why?
What is the chemical formula of alum?
Explain the Hydrogen and its Compounds ?
Explain extraction of ephedrine from a mineral block?
If the stopper if a bottle has stuck, sometimes it may be removed by heating the neck, why ?
On the cold morning, a gardener touches the iron blade of his spade with one hand and its wooden handle with other hand. Why does he feel the iron blade to be colder than the wooden handle ?
What is the difference between caustic soda and washing soda ?
Mention the formula to calculate ph of a solution?
What is Distillation ?