The mass of proton and mass of ________ is same.
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Which base is present in lime water?
Of the following commonly used materials, the one that is not an alloy is
Alkali metals can
30 litres of salt solution contains 5% salt. How many litres of water must be added so as to get a resultant solution containing 3%salt?
Which of the follow is the last element in Newlands Law of Octaves classification?
Chemical Formula of Water is _____ .
In a compound the elements are always present in definite proportions by ______
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