IICRC OCT COURSE 2025 PRACTICE QUESTIONS AND ANSWERS 100% VERIFIED.

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
>>> Olfac- tory lobe




3. The "pure" sensation of smell that is transmitted from the nose to the
olfactory lobe by way of the olfactory nerve is called . ANS
>>> real odor
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, 4. is a term used by some to de-
scribe odors which people believe they smell, based on experiences, sugges-
tions and past impressions. ANS >>> Psychological odors



5. The human sense that is capable of distinguishing odors at very low con-
centrations is the . 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 accus-
tomed 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
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, control. ANS >>> 2nd



11. is the third general principle in effective de-
odorization. ANS >>> Penetration



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



13. A is a compound that "locks-in" vaporous odor mol-
ecules. ANS >>> sealer



14. Oxidizing agents break down organic matter by adding



. ANS >>> oxygen



15. Chlorine bleach and ozone gas are . ANS >>> oxidizer



16. Most deodorants used in smoke odor removal contain a combination of



and agents. ANS >>> masking ; pairing


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