Question

Define calcination and roasting....??

Answer 1

⛄hello dude⛄

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here is ur answer ^↓^

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✒Calcination
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✏The process in which the metals from their ores are obtained on heating in the absence of oxygen is called calcination.

→This is done in carbonate ores.

✒Roasting
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✏The process in which the metals from their ores are obtained on heating in the presence of oxygen is called roasting.

→This is done in sulphide ores.




✨⭐hope it helps uh⭐✨

Answer 2

${ \red{ \underline{ \underline{ \bold{ щɧąɬ \: ıʂ \: calcinaтion?}}}}}$

➪ Calcination in simple words can be described as a process of heating some solid material or a substance in a controlled environment.

➪ Usually in this process, the temperature is also regulated. Calcination is done to bring about some change in the substance physical or chemical constitution.

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$\green{ \underline{ \underline{ \bold{աɦǟt \: ɨֆ \: roaѕтing?}}}}$

➪ Ores found in the form of sulphide and carbonates are first converted to their oxides by the process of roasting and calcination.

➪ Heating of sulphide ores in the presence of excess air to convert them into oxides is known as roasting.

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