Chemical Technician questions with complete
solutions
1. What Is the difference between C8 And C18 HPLC column?
v v v v v v v v v v
a. C8 more non-polar. b.C8 has 16 Carbon atoms
v v v v v v v v
c. C8 is more efficient. d. C8 column is more polar than C18. - answer-d. C8 column is
v v v v v v v v v v v v v v v v v
more polar than C18.
v v v v
2. What is the use HPLC?
v v v v v
a. to identify component of mixtures b. to separate component of mixtures
v v v v v v v v v v v
c. to purify the analyte of interest d all of the above - answer-d all of the above
v v v v v v v v v v v v v v v v v
3. What is a Base Line? - answer-a. detectors' response to the mobile phase
v v v v v v v v v v v v v
Which is not a source of Base line noise? - answer-d. volume of sample injected
v v v v v v v v v v v v v v
Apparent changes in the pH solution when it is continuously used for 30 days without
v v v v v v v v v v v v v v
storage at 4
v v v
deg. C. - answer-a. microbial growth
v v v v v
Both classical and instrumental methods can be used to determine the concentration of
v v v v v v v v v v v v
a specific
v v
element or species in a compound. Which of the following pairs is the wrong
v v v v v v v v v v v v v
combination of the type of
v v v v v
analysis with its characteristic? - answer-b. Spectrophotometric analysis - density
v v v v v v v v v
In complexometric titration, the most common used chelating agent is EDTA
v v v v v v v v v v
v(ethylenediamine
tetraacetic acid). EDTA's molecules will combine with metals to form chelate. EDTA is
v v v v v v v v v v v v
vclassified as a? - answer-b. Hexadentate ligand
v v v v v v
In redox titration, what chemical substance is added to the iodometry and iodimetry
v v v v v v v v v v v v
vanalysis - answer-a. Starch v v v
The extent of radiation absorbed by the absorbing species is a function of the path
v v v v v v v v v v v v v v
length and the
v v v
concentration of the absorbing species. - answer-a. Beer-Lambert's law v v v v v v v v
solutions
1. What Is the difference between C8 And C18 HPLC column?
v v v v v v v v v v
a. C8 more non-polar. b.C8 has 16 Carbon atoms
v v v v v v v v
c. C8 is more efficient. d. C8 column is more polar than C18. - answer-d. C8 column is
v v v v v v v v v v v v v v v v v
more polar than C18.
v v v v
2. What is the use HPLC?
v v v v v
a. to identify component of mixtures b. to separate component of mixtures
v v v v v v v v v v v
c. to purify the analyte of interest d all of the above - answer-d all of the above
v v v v v v v v v v v v v v v v v
3. What is a Base Line? - answer-a. detectors' response to the mobile phase
v v v v v v v v v v v v v
Which is not a source of Base line noise? - answer-d. volume of sample injected
v v v v v v v v v v v v v v
Apparent changes in the pH solution when it is continuously used for 30 days without
v v v v v v v v v v v v v v
storage at 4
v v v
deg. C. - answer-a. microbial growth
v v v v v
Both classical and instrumental methods can be used to determine the concentration of
v v v v v v v v v v v v
a specific
v v
element or species in a compound. Which of the following pairs is the wrong
v v v v v v v v v v v v v
combination of the type of
v v v v v
analysis with its characteristic? - answer-b. Spectrophotometric analysis - density
v v v v v v v v v
In complexometric titration, the most common used chelating agent is EDTA
v v v v v v v v v v
v(ethylenediamine
tetraacetic acid). EDTA's molecules will combine with metals to form chelate. EDTA is
v v v v v v v v v v v v
vclassified as a? - answer-b. Hexadentate ligand
v v v v v v
In redox titration, what chemical substance is added to the iodometry and iodimetry
v v v v v v v v v v v v
vanalysis - answer-a. Starch v v v
The extent of radiation absorbed by the absorbing species is a function of the path
v v v v v v v v v v v v v v
length and the
v v v
concentration of the absorbing species. - answer-a. Beer-Lambert's law v v v v v v v v
