NCERT Question 12 (d) - Chapter 3 Class 10 - Metals and Non-Metals

Give reasons

(d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction.

Answer:-

(d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction.

It is not easy to reduce naturally occurring carbonate and sulphides directly into metals. 

• The process involves extra steps and is not commercially viable
• Hence, they're first converted into oxides . 

After an ore is converted into oxide, it is easier to reduce them into pure metals.