Extraction of metal from ore cassiterite does not involves

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General Principles and processes of Isolation of Elements

easy

Extraction of metal from the ore cassiterite does not involves

A

carbon reduction of an oxide ore

B

self reduction of a sulphide ore

C

removal of copper impurity

D

removal of iron impurity

Solution

Tin is extracted from cassiterite ore $(SnO_2)$ It is reduced by carbon
$SnO_2 + 2C \to Sn + 2CO$

Crude metal contain impurity of $Fe, W$ and $Cu$.

Standard 12

Chemistry

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Similar Questions

List $-I$ contains different compound formed during extraction of metal $(M)$ in List $-II$

List $-I$ List $-II$

$(P)$ $[M(CN)_2]^-$ $(1)$ $Ni$ (during refining of metal)

$(Q)$ $[M(CO)_4]$ $(2)$ $Ti$ (during refining of metal)

$(R)$ $MI_4$ $(3)$ $Pb$ (during roasting of ore)

$(S)$ $MO$ $(4)$ $Ag$ (during leaching of ore)

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Consider the following metallurgical processes

$(i)$ Heating impure metal with $CO$ and distilling the resulting volatile carbonyl (boiling point $43\,^oC$) and finally decomposing at $150\,^oC$ to $200\,^oC$ to get the pure metal.

$(ii)$ Heating the sulphide ore in air until a part is converted to oxide and then further heating in the absence of air to let the oxide react with unchanged sulphide.

$(iii)$ Electrolysing the molten electrolyte containing approximately equal amounts of the metal chloride and $CaCl_2$ to obtain the metal.

The process used for obtaining sodium, nickel and copper are, respectively,

medium

$MgO$ is used as a refractory material because

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Which process of purification is represented by the following equation

$\mathop {Ti{\mkern 1mu} }\limits_{{\text{(Impure)}}} {\text{ + 2}}{{\text{I}}_2}\xrightarrow{{250{{\kern 1pt} \,^o}C}}$ ${\text{Ti}}{{\text{I}}_4}\xrightarrow{{1400{{\kern 1pt} \,^o}C}}\mathop {{\text{Ti}}}\limits_{{\text{(Pure) }}} {\text{ + 2}}{{\text{I}}_2}$

easy

Copper matte contains

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