Which alloy is used to make surgical instruments?

Which alloy is used for making aircraft parts?

Give the composition of the alloys brass and bronze.

An element $A$ burns with a golden yellow flame in air. It reacts with another element $B$ (atomic number $17$) to give a product $C$. An aqueous solution of product $C$ on electrolysis gives a compound $D$ and liberates hydrogen. Identify $A$,$B$,$C$,and $D$. Also,write down the equations for the reactions involved.

Which gas is useful for inhibiting bacterial growth?

In a blast furnace,what prevents the oxidation of molten iron?