Automation of Machines

Question 1

Photons travelling in waves

Answer 1

Electromagnetic radiation

Question 2

Distance between two peaks

Answer 2

Wavelength

Question 3

Distance between peak and trough

Answer 3

Amplitude

Question 4

Falls in between 400 nm to 700 nm

Answer 4

Visible lights

Question 5

The concentration of a substance is directly proportional to the amount light absorbed or inversely proportional to the logarithm of the transmitted light

Answer 5

Beer lawbert law (Beers law)

Question 6

Method of determining the concentration of substance in solutions; measuring amount of light absorbed by that solution

Answer 6

Spectrophotometer

Question 7

Most common light source in visible and near infrared regions

Answer 7

Incandescent tungsten or tungsten iodide lamp

Question 8

Most common used for UV work

Answer 8

Discharge lamp and mercury arc lamp

Question 9

Will select your desired wavelength

Answer 9

Monochromators

Question 10

Most common used in monochromators

Answer 10

Diffraction grating

Question 11

Round vs square cuvette

Answer 11

Preferred square cuvette

Question 12

Used for application in the visible range or infrared

Answer 12

Glass

Question 13

For application requiring UV radiation

Answer 13

Quartz

Question 14

Layer cell or photo cell; least expensive

Answer 14

Barrier

Question 15

Used in instrument designed to be extremely sensitive to very low light level and light flash

Answer 15

Photomultiplier tube

Question 16

Measures the quantity of light reflected by a liquid sample that has been dispensed onto a grainy or fibrous solid support

Answer 16

Reflectometry

Question 17

Measurement of concentration is done by detecting absorption electromagnetic by atom rather than molecules

Answer 17

Atomic absorption spectrophotometry

Question 18

Usual light source of AAS

Answer 18

Hallow cathode lamp

Question 19

Break chemical bond and form free unexcited atoms serves as sample cells (AAS)

Answer 19

Flame

Question 20

Used to isolate the desired wavelength (AAS)

Answer 20

Monochromators

Question 21

Measurement of light emitted by excited atoms

Answer 21

Flame Photometry

Question 22

Measurement of the concentration of the solutions that contain flourescing molecules; used to measure small particles

Answer 22

Flurometry

Question 23

Used for protein blotting, immunoassay, pharmacological and toxicological testing

Answer 23

Chemiluminescence

Question 24

Measurements made with spectrophotometer to determine a concentration of particulate matter in sample

Answer 24

Turbidimetry

Question 25

Light scattered by a small particles is measured at an angle to the beam incident to the cuvette

Answer 25

Nephelometry

Question 26

Measure particles which are too larger for spectrophotometry

Answer 26

Nephelometers

Question 27

Measurement of the current or voltage generated by the activity of spiecific ion

Answer 27

Electrochemistry

Question 28

Measurement of potential voltage between two electrode in a solute to measure analyte concentration

Answer 28

Potentiometry

Question 29

Measurement of the current flow produced by an oxidation reduction reaction

Answer 29

Amperometry

Question 30

Electrochemical titration in which titrant is electrochemically generated

Answer 30

Coulometry

Question 31

Potential is applied to an electrochemical cell and the resulting current is measured

Answer 31

Voltammetry

Question 32

Separation of charged compounds based on their electric charge

Answer 32

Electrophoresis