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Roasting

The sulphide ...

Question

The sulphide ores are converted into its oxides by heating strongly in presence of excess of air. What is the term given to this process?

A

Calcination

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B

Roasting

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C

Electrolytic reduction

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D

Refining

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Solution

The correct option is B Roasting
Roasting is a process in which a concentrated sulphide ore is converted into an oxide by heating strongly in the presence of excess air.
Ex- $2 Z n S + 3 O_{2} \to 2 Z n O + 2 S O_{2}$

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Q. The sulphide ores are converted into oxides by heating strongly in the presence of excess air. This process is known as:
(correct answer +1, wrong answer -0.25)

Q. Sulphide ores are converted into oxides by heating them strongly in excess of air. This process is known as

Q. In which among the following processes ore is heated in the presence of excess air to convert the sulphide ore into its oxides?

Q. 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.

Q. Read the following statements carefully.

(I) Sulphide ores are converted into oxides by heating strongly in the absence of air or oxygen.

(II) Impurities such as soil, sand etc, present in ores are called gangue.

Now, choose the correct option.

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