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Roasting

Roasting is t...

Question

Roasting is the process of heating a concentrated ore in the excess supply of air.

A

False

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B

True

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Solution

The correct option is B True

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State True or False.

The process of heating concentrated ore to a high temperature in excess air is called Roasting. State whether it is true or false

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. Choose the correct option using the code regarding roasting process.
I) It is the process of heating the ore in air in a reverberatory furnace to obtain the oxide.
II) It is an exothermic process.
III) It is used for the concentration of sulphide ore.
IV) It removes easily oxidisable volatile impurities present in the concentrated ore.

Q. The process to heat the ore in the presence of excess supply of air below its melting point is called as ________.

Q. Choose the correct code regarding the roasting process:
(I) It is the process of heating ore in air to obtain the oxide

(II) It is an exothermic process
(III) It is used for hydrated oxide and oxysalt ore

(IV) It is used after the concentration of ore

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