WorksheetsAtomic Spectroscopy
Total questions: 10
Worksheet time: 5mins
Which of the following is the principle of Atomic Absorption Spectroscopy?
Radiation is absorbed by non-excited atoms in vapour state and are excited to higher states
Medium absorbs radiation and transmitted radiation is measured
Colour is measured
Colour is simply observed
In Atomic Absorption Spectroscopy, which of the following is the generally used radiation source?
Tungsten lamp
Xenon mercury arc lamp
Hydrogen or deuterium discharge lamp
Hollow cathode lamp
How can the intensity of radiation be increased in Hollow cathode lamp?
Addition of non-conductive protective shield of mica
Addition of nitrogen to neon or argon in the lamp
Increasing the pressure of the filling gas
Changing the metal of the anode
Which of the following is the function of the chopper in Atomic Absorption Spectroscopy?
To split the beam into two
To filter unwanted components
To break the steady light into pulsating light
To reduce the sample into atomic state
Atomic Absorption Spectroscopy is used for the analysis of metals.
True
False
What is the significance of using a monochromator in atomic fluorescence spectroscopy
It filters out unwanted emissions from the sample
It selects a specific wavelength for analysis
It enhances the fluorescence signal
It increases the selectivity of the detector
Which of the elements is commonly analyzed using atomic fluorescence spectroscopy in environmental monitoring
Oxygen
Carbon
Carbon Dioxide
Mercury
Atomic Emission Spectroscopy usually can be used for both metal and non metal
Yes
No
An emission spectrum is produced when an electron moves from one energy level
into the nucleus
to a lower energy level
to a higher energy level
to another position in the same sublevel
Each element produces its own pattern of emission spectra lines because each element has its own distinct
Number of neutrons
Speed of light
Electron configuration
None of these
