Question

Statement 1: The sulphide ore is converted into its oxides in the absence of air.
Statement 2: The carbonate ores is converted into oxides in the presence of excess air.

• A. Both statements are false.
• B. Both statements are true.
• C. Statement 1 is true and statement 2 is false.
• D. Statement 1 is false and statement 2 is true.

Answer 1

The correct option is A Both statements are false.

Metals are easier to be extracted from their oxide state. Roasting and calcination are the two most commonly used processes to convert a metallic ore to its oxide.

Sulphide ores are converted into its oxides by the process of roasting. In this process, ore is heated in the presence of excess of air.

On the other hand, carbonate ores are converted into its oxides by the process of calcination. In this process, the ore is heated in the absence of air.