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प्रश्न
Assertion (A): The extraction of metals from their sulphide ores cannot take place without roasting the ore.
Reason (R): Roasting converts sulphide ores directly into metals.
विकल्प
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.
उत्तर
Assertion (A) is true, but Reason (R) is false.
Explanation:
Roasting converts sulphide ores directly into metals is incorrect as roasting does not convert sulphide ores directly into metals. Instead, it converts sulphide ores into their oxides, which can then be reduced to metals in subsequent steps. This is crucial as metal oxides are generally easier to reduce to metals compared to their sulphides.
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