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General Principles and processes of Isolation of Elements
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A sulphide ore is first converted into its oxide before reduction. This is done because
A
a sulphide ore cannot be reduced to metal at all
B
no reducing agent is found suitable for reducing a sulphide ore
C
the enthalpy of formation of $CO_2$ is more than that of $CS_2$
D
a metal oxide is generally less stable than the metal sulphide
Solution
A metal oxide is generally less stable than the metal sulfide. Thus, reduction of metal oxide is easier than the reduction of metal sulfide. Hence, a sulfide ore is first converted into it's oxide before reduction. This process is known as roasting.
Standard 12
Chemistry
Similar Questions
Match the list
| $I$ | $II$ | ||
| $(A)$ | Van arkel method | $(P)$ | Purification of titanium |
| $(B)$ | Solvay process | $(Q)$ | Manufacture of $Na_2CO_3$ |
| $(C)$ | Bassemerisation | $(R)$ | Reduction of aluminium |
| $(D)$ | Holl Herault's process | $(S)$ | Reduction of cupper |
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