It is the process of heating concentrated ores like carbonate or hydrated oxide to a high temperature in the absence of air. The mineral must be too hard to melt at this temperature.
Example – Metal carbonates decompose to give metal oxides.
Define calcination. Give an example and equation for calcination.
Define calcination. Give an example and equation for calcination.
and 
, internal resistance 
and 
, connected in parallel. The equivalent emf of the combination is- (A) 
(B) 
(C) 
(D) 
and 
are collinear, prove that 
and 
be three points such that area of a 
is 4 sq units, find the value of 
.
and 
is 35 sq units.
and 
are collinear.
and 
are collinear.
and 
are collinear.
and 