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Absorption methods based on measuring the intensity of absorption of electromagnetic radiation by atoms and molecules of a substance are called

• spectral atomic absorption

• spectral atomic emission

• nephelometry

• nuclear magnetic resonance spectroscopy

• optical acoustic spectroscopy

The wavelength of electromagnetic radiation (λ) in the UV and visible regions of the spectrum is measured in ... .

• centimeters (cm)

• kilometers (km)

• Nanometers (nm)

• millimeters (mm)

• decimeters (dm)

Photometric methods in which the light absorption of colored solutions is measured are called ...

• turbidimetric

• nephelometric

• UV spectrophotometric

• photocolorimetric

• IR spectrophotometric

The combined Booger-Lambert-Behr law is expressed by the formula ... .

• lgI= ε×l×Io

• lg Io/I= C×l

•   lg Io/I= ε×C×l

• lg Io/I= ε×C

• lgIo = ε×C×l× I

The unit of measurement of optical density (absorption, A) is ...

• mol/l

• centimeter (cm)

• gram (g)

• dimensionless quantity

• nanometer (nm)

To measure the optical density on SF-2000, the test solution is placed in (on) ...

• cuvettes with a layer thickness of 3 cm

• cuvettes with a layer thickness of 0.5 cm

• cuvettes with a layer thickness of 1 cm

• cuvettes with a layer thickness of 5 cm

• cuvettes with a layer thickness of 2 cm

The device on which the light absorption of the solution is measured, with the release of a strip of light (λmax) using light filters, is called ...

• polarimeter

• derivatograph

• potentiometer

• photoelectrocolorimeter

• spectrophotometer

The methods of analysis based on the interaction of matter with electromagnetic radiation are called ... .

• magnetochemical

• radiometric

• chromatographic

• spectroscopic

• kinetic

A section of the ultraviolet radiation spectrum lies in the wavelength range ...

•    10^-3 – 1 nm

•   400 – 760 nm

• 180 – 400 nm

• 10^-4 – 0,1 nm

• 10^-2 – 10 nm

Devices that convert light energy into electrical energy are called ...

• generators

• photocells

• LEDs

• generators

• transistors