who invented the first projector?
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How BIS Decedied the LSF value 0.66-1.02 with calculation.
Mention the formula to calculate ph of a solution?
Why a hot day in Calcutta causes more discomfort than are equally hot day in Delhi ?
Explain the Different types of solutions ?
What is Salts ?
What is an alloy ?
Which substance has the highest specific heat ?
when we covert any substance into vapour state from solid state, is it ionized or not?
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 does a piece of iron float on mercury, but sink in water ?
What is photoelectric colorimeter?
What is the purest form of water ?
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