Give the correct order of initials $T$ or $F$ for following statements. Use $T$ if statement is true and $F$ if it is false.

$(i)$ $Cu$ metal is extracted from its sulphide ore by reduction of $Cu_2O$ with $FeS.$

$(ii)$ An ore of Tin containing $FeCrO_4$ is concentrated by magnetic separation method.

$(iii)$ Auto reduction process is used in the extraction of $Cu\, \& \,Hg.$

$(iv)$ Cassiterite and Rutile are oxide ores of the metals.

The material mixed before ore is subjected for smelting in the extraction of iron are

Which method of purification is represented by the following equation ?

$Ti(s) + 2I_2(g) \xrightarrow{{523\,K}} $ $Ti{I_4}(g)\xrightarrow{{1700\,K}}Ti(s) + 2{I_2}(g)$

Which of the following statement is not correct regarding calcination ?

'Softening of lead' means