Formation of NO from N2 and O2 is a
Exothermic
Combustion
Endothermic
Combination
The energy required to break a bond is called
bond energy
bond dissociation energy
bond dissipation
bond enthalpy
Photosynthesis is a
exothermic reaction
endothermic reaction
decomposition
combination
Every substance is associated with a definite amount of energy called
Bond energy
Internal energy
Enthalpy
Entropy
An example for endothermic reaction
formation of ammonia
photosynthesis
formation of SO3
formation of water
For exothermic reaction, ΔH is
Zero
Positive
Negative
One
Formation of ammonia is a
exothermic
endothermic
combustion
displacement reaction
A chemical reaction in which heat is liberated is called
exothermic reactions
endothermic reactions
Plants synthesise complex molecules from simpler substances by a process known as
Photosynthesis
Decomposition
Displacement
Energy required to break hydrogen molecules is
105 k Cal / mol
104 k Cal / mol
103 k Cal / mol
107 k Cal / mol
