From what raw material is paper manufactured ?
Acid value defination is numbber milligrams of KOH required to nuetralise the acid present in one gram oil & fats but why not use NaOH for nuetralisation?
Why are substances like caustic soda and calcium chloride called hygroscopic substances ?
What is the unit of ph?
What is the min constitutes of haematite ore?
Explain about Oxide ?
Give the principle of potentiometer titration.
Why does a freely supended magnetic needle always point North and South ?
SET Examination Previous Questions
is urea addition affecting the COD (chemical oxygen demand) & BOD (Biological oxygen demand)level? why?
Why does a freely suspended magnetic needle always point North and South ?
How many elements have been discovered ?
How is food preserved ?