IICRC OCT Course 2026 Practice Questions Exam Actual 2026 Questions and Verified Answers (2026 / 2027) A+ Grade Complete

IICRC OCT COURSE - PRACTICE EXAM
Questions and Answers

1. The is the technician's best instrument for detecting
the presence and intensity of an odor.
ANS Nose


2. Odor is a gas interpreted by
the .
ANS Olfactory lobe


3. The "pure"
sensation of smell that is transmitted from the nose to the olfac-
tory lobe by way of the olfactory nerve is called .
ANS real odor


4. is a term used by some to
describe odors which people believe they smell, based on
experiences, suggestions and past impressions.
ANS Psychological odors


5. The human sense that is capable of
distinguishing odors at very low concen- trations is the .

1/
20

,ANS Olfactory sense


6. An important property for a substance to have a detectable odor is
solubility.
ANS water


7. is a condition where an individual becomes
accustomed to an odor.
ANS Aclamation


8. Odor is most apparent when
and are high.-


ANS humidity ; temperature


9. Most
deodorizations usually begin with the removal of the .
ANS source


10. Cleaning the source area
is the principle of odor
control.
ANS -
2nd
2/
20

, 11. is the third general principle in effective
deodoriza- tion.
ANS Penetration


12. is the fourth principle of odor control.
ANS Sealing


13. A is a compound that "locks-in" vaporous odor
molecules.-


ANS sealer


14. Oxi
dizing agents break down organic matter by adding .
ANS oxy- gen


15. Chlorine bleach and
ozone gas are .
ANS oxidizers


16. Most deodorants used in smoke odor removal contain a
combination of
and agents.
3/
20