The common name of hydrogen peroxide is
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A solution contains 33 g of common salt in 320 g of water. Calculate the concentration in terms of mass, by mass percentage of the solution.
______ is used for making chemical apparatus like beakers, flasks etc.
The upper part of the heterosphere is composed almost completely of which gas?
Which of the following inert gases is placed in period 4 of the periodic table?
The polar ice-caps are made of ____________ water
The conversion of hard water into soft water by boiling or adding calcium hydroxide is called _______.
Atoms of same element having different mass numbers are called__________
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