(B) Calcination is a process of heating an ore strongly in the limited supply or absence of air. $CaCO_3 \xrightarrow{\Delta} CaO + CO_2$. Therefore,t

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(B) Calcination is a process of heating an ore strongly in the limited supply or absence of air. $CaCO_3 \xrightarrow{\Delta} CaO + CO_2$. Therefore,the correct option is $B$.

Class 12 Chemistry General Principles and Processes of Isolation of Elements Roasting and Calcination

Easy

In calcination,the ore is heated in $......$.

A
Blast furnace
B
Absence of air
C
Presence of air
D
None of these

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Class 12

Chemistry Questions

Chapter

General Principles and Processes of Isolation of Elements

Subtopic

Roasting and Calcination

Match the following:

List-$I$ List-$II$

$(I)$ Calcination $a. Fe_2O_3 \cdot nH_2O \rightarrow Fe_2O_3 + nH_2O$

$(II)$ Roasting $b. 2Cu_2S + 3O_2 \rightarrow 2Cu_2O + 2SO_2$

$(III)$ Flux $c. SiO_2 + FeO \rightarrow FeSiO_3$

$(IV)$ Thermite $d. Cr_2O_3 + 2Al \rightarrow Al_2O_3 + 2Cr$

List-$I$	List-$II$
$(I)$ Calcination	$a. Fe_2O_3 \cdot nH_2O \rightarrow Fe_2O_3 + nH_2O$
$(II)$ Roasting	$b. 2Cu_2S + 3O_2 \rightarrow 2Cu_2O + 2SO_2$
$(III)$ Flux	$c. SiO_2 + FeO \rightarrow FeSiO_3$
$(IV)$ Thermite	$d. Cr_2O_3 + 2Al \rightarrow Al_2O_3 + 2Cr$