__________gives hardness to stainless steel.
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The oceanic crust mainly consists of silica and __________.
What is contained in Chlorophyll ?
The strongest interactions between molecules of hydrogen chloride are
Which of the following elements has the lowest melting point?
What is the base of the Octal Numeral System?
Find the odd one out.
The reactions in which oxidation and reduction occur simultaneously are called _______.