Quantum efficiency and its determination

To express the relationship between the number of molecules reacting with the number of photones absorbed concept of___________was introduced

• quantum efficiency

• Photon analysis

• quantum mechanism

• Photon degradation

quantum efficiency may be defind as the number of moles reacting per Einstein of _________

• Molecules reacting

• Moles reacting

• light absorbed

• All the above

What are the instruments used to determine the quanta number of absorbed light?

• 1

• 7

• 3

• 5

How many molar oxalic acid in water?

• 0.05

• 0.01

• 0.03

• 0.07

In thermocouple name the two metals together?

• Magnesium and Calcium

• Silver and gold

• Copper and pottasium

• Silver and bismuth

When two or more molecules are decompsed per photon,the reaction has_________quentum yield?

• High

• Low

• unpredictable

• None of the above

Which is a device used for mixing gases or light-sensitive solutions?

• Lens

• Thermophile

• Actinometer

• Thermocouple

How Many metal rods jointed in thermocouple ?

• 3

• 5

• 2

• 1

Usually thermophile or actinometer used as_________

• Detector

• Lens

• Reaction cell

• Light source

Quantum efficiency is a function of photon wavelength.

• True

• False