Burning of coal ______energy.
Combination
absorbs
releases and then absorbs
can't predict
Burning of Coal i.e.,
C+O2→CO2 releases energy. It is an exothermic reaction.
When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide, then heat energy is :
(a) released (b) first absorbed and then released
(c) absorbed (d) neither absorbed nor released