What is the percentage of carbon in mild steel?

Percentage of silver in German silver is (in $\%$)

Give the correct order of initials $T$ or $F$ for following statements. Use $T$ if statement is true and $F$ if it is false.
$(i)$ In Goldschmidt thermite process,aluminium acts as a reducing agent.
$(ii)$ $Mg$ is extracted by electrolysis of aqueous solution of $MgCl_2$.
$(iii)$ Extraction of $Pb$ is possible by carbon reduction method.
$(iv)$ Red Bauxite is purified by Serpeck's process.

Consider the following statements:
$(i)$ Froth flotation technique is used to concentrate sulphide ore.
$(ii)$ Froth flotation technique is based upon differential wettability of ore and impurity in water.
$(iii)$ Red Bauxite is concentrated by Bayer's process.
$(iv)$ Carbon is used as a reducing agent during the extraction of zinc from zinc blende.
Which of the following statements are correct?

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$(a)$ Sodium Carbonate	$(i)$ Deacon
$(b)$ Titanium	$(ii)$ Castner-Kellner
$(c)$ Chlorine	$(iii)$ Van-Arkel
$(d)$ Sodium hydroxide	$(iv)$ Solvay

Choose the correct answer from the options given below:

Match List-$I$ with List-$II$.

List-$I$	List-$II$
$A$. Bronze	$I$. $Cu, Ni$
$B$. Brass	$II$. $Fe, Cr, Ni, C$
$C$. $UK$ silver coin	$III$. $Cu, Zn$
$D$. Stainless Steel	$IV$. $Cu, Sn$

Choose the correct answer from the options given below: