How is temporary hardness be removed?
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Define Vulcanization?
Why is ph increases suddenly after the equivalence point?
What is the unit of ph?
What is electroplating ?
With what metal, chocolates, cigarettes etc. are wrapped ?
What is iron ore consists of?
How are pka and strength of a weak acid related?
What is protein - according to chemistry?
What is the role of silver sulphate?
Why a hot day in Calcutta causes more discomfort than are equally hot day in Delhi ?
How is food preserved ?
Which gas is used, in laboratories etc. for burners ?