lesson 5

Question 1

in IR region, _____ is used as light source

Answer 1

tungsten

Question 2

in UV region, ____ is used as light source

Answer 2

deutereum

Question 3

it is the negative logarithm of transmittance

Answer 3

absorbance

Question 4

what is the energy called for the electromagnetic spectrum

Answer 4

radiant energy

Question 5

it is defined as the complete system of energy propagated in a wave form

Answer 5

electromagnetic spectrum (EMS)

Question 6

fundamental law of spectrophotometry where it states the relationship between sample concentration and absorbance

Answer 6

beer’s law

Question 7

distance between one wave from another

Answer 7

wavelength

Question 8

it is the reciprocal of wavelength

Answer 8

wavenumber

Question 9

the functional group that is responsible for absorption of energy in EMS is called ___

Answer 9

chromophore

Question 10

wavelength in the visible region

Answer 10

380-780 nm

Question 11

wave number increases : energy ___

Answer 11

increases

Question 12

wavenumber decreases : frequency ___

Answer 12

decreases

Question 13

which has the longer wavelength, UV or radiowave?

Answer 13

radiowave

Question 14

if the wavelength is set at 602 nm, the cuvette to use is ___

Answer 14

glass

Question 15

if the lamp use is deuterium, the cuvette to use is __

Answer 15

quartz

Question 16

it is the combination of all colors

Answer 16

white light

Question 17

absorbance and concentration

Answer 17

beer’s plot

Question 18

transmittance and wavelength

Answer 18

lambert’s law

Question 19

parts of monochromater

Answer 19

prism/grating
entrance slit
exit slit

Question 20

riboflavin

Answer 20

fluoremetry

Question 21

brain tumor

Answer 21

NMR

Question 22

method of analysis which deals with the measurement of the spectra

Answer 22

spectrometry

Question 23

used in the visible region of the EM spectrum

Answer 23

colorimeter

Question 24

shortest wavelength : ___ energy

Answer 24

high

Question 25

longest wavelength OUTSIDE

Answer 25

red

Question 26

shortest wavelength INSIDE

Answer 26

violet