Difference between photochemical and thermal reaction

Involver the absorption of light

• Photochemical reaction

• Thermochemical reaction

• Both a and b

Photochemical reaction take place in presence of ___..

• Dark

• Light

• Heat

Thermochemical reaction is simplificatly effect by___.

• Pressure

• Wavelength

• Temperature

Rate of these reactions are dependent on the intensity of ___.

• Light

• Dark

• Light absorbed

The free energy change ∆G for the reaction is always ___.

• Negative

• Positive

• Neutral

Rate of such a reaction is not effect by the ___.

• Absorption

• Intensity

• Conversion light

Thermochemical activation is ___ nature.

• Selection

• Not selection

• None of the above

Photochemical activation is ___ Selective.

• High

• Low

Photochemical is that absorbed Photon of light excites only a particular ___.

• Atom or molecule

• Group of atom

• Both a and b

In thermalchemical reaction, the free energy charge ∆G for these reaction may be _____

• +or -

• -or neutral

• +or-