Consider the following statements:Consider the following statements:

Statement 1: Roasting involves oxidation of sulphide ores in the absence of air.

Statement 2: Calcination involves oxidation of carbonate ores in the absence
of air.

Both statement 1 and statement 2 are correct.

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Neither statement 1 nor statement 2 is correct.

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Statement 1 is incorrect and statement 2 is correct.

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Statement 1 is correct and statement 2 is incorrect.

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Solution

The correct option is B Neither statement 1 nor statement 2 is correct.

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Similar questions

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. Assertion :Roasting is a process in which the ore is heated strongly in absence of air. Reason: Concentration of sulphide ore is done by calcination.

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.

Q. Choose the correct option for the following statements
Statement - 1: Sulphide ore is firstly converted to oxide and then it is subjected to reduction for the extraction of metal.
Statement - 2: In calcination, the ore is heated in a regular supply of air in a furnace at a temperature below melting point of the calcined product.
Statement - 3: Roasting involves heating in absence of air until volatile matter escapes.
Statement - 4: In the metallurgy of aluminium, purified

A l_{2} O_{3}

is mixed with

N a_{3} A l F_{6}

C a F_{2}

which increases the melting point of the mix.

State whether the following statement is true or false.

"Carbonate ores get changed into oxides by heating strongly in limited air. This process is known as calcination."

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Consider the following statements:Consider the following statements: Statement 1: Roasting involves oxidation of sulphide ores in the absence of air. Statement 2: Calcination involves oxidation of carbonate ores in the absence of air.

The correct option is B Neither statement 1 nor statement 2 is correct.

Consider the following statements:Consider the following statements:

Statement 1: Roasting involves oxidation of sulphide ores in the absence of air.

Statement 2: Calcination involves oxidation of carbonate ores in the absence
of air.