Exams › NEET › Chemistry

Sulphides ores are converted to oxides before reduction. This is explained on the basis of which of the following?

1. Sulphides cannot be reduced easily while oxides can be reduced easily.
2. Sulphides decompose on reduction hence they are fixed converted to oxides.
3. Sulphide ores have higher melting points than oxides.
4. Oxides are more stable than sulphides hence easy to reduce.

Correct answer: Sulphides decompose on reduction hence they are fixed converted to oxides.

Solution

Sulphide ores are first roasted to oxides because sulphides tend to decompose or behave poorly under direct reduction conditions. The oxide form is then much easier to reduce to the metal.

Related NEET Chemistry questions

• In the atmosphere of industrial smog, copper corrodes to form: This question has multiple correct options
• The idea of froth floatation method came from a person \( X \) and this method is related to the process \( Y \) of ores. \( X \) and Y, respectively, are:
• Refining of aluminium is done by
• Roasting is carried out to This question has multiple correct options
• In the extraction of aluminium by electrolytic process, cryolite is added to
• Metal oxides are reduced to metal by:

⚔️ Practice NEET Chemistry free + battle 1v1 →