IICRC 2025 Practice Questions & Answers
Latest Update Version
1. is the third general principle in effective
deodorization.: Penetration
2. is the fourth principle of odor control.: Sealing
3. A is a compound that "locks-in" vaporous odor molecules.:
sealer
4. Oxidizing agents break down organic matter by adding
: Oxygen
5. Chlorine bleach and ozone gas are .: oxidizers
6. Most deodorants used in smoke odor removal contain a combination of
and agents.: masking ; pairing
7. A combines with and changes a malodorous
substance to create a new odorless compound.: pairing agent
8. is a method of disguising a malodor with a stronger more
pleasant odor.: Masking
9. Oils, gels or solid materials impregnated with fragrances to mask odors work on the
- principle.: time-released
, 10. The process of enzymes breaking down an odor causing organic material (such as milk,
eggs, fish or pet odors) is called .: digestion
11. A micron is a unit of measurement used to describe or
. Particle; droplets
12. Damage to moisture-sensitive materials is a concern when using
.: high volume wet foggers
13. A ULV fogger is used to cold-fog -based
deodorants.: water
14. A fogger is specified primarily for use in the application of water
based formulations where small deodorant droplets are desired that range from 8-15
microns.: ULV
15. A is a device that generates heat to produce
petroleum-based deodorant droplets ranging in size between 0.5 to 2 microns.: thermal
fogger
16. The use of thermal fogging in an odor intense environment can best be described as
an odor modification or treatment.:
counteraction
17. is an oxidizing gas with the chemical symbol 03.: Ozone
18. An electrically powered device used to produce an oxidizing odor-control gas is called
an .: ozone generator
19. Ozone gas is than air.: heavier
Latest Update Version
1. is the third general principle in effective
deodorization.: Penetration
2. is the fourth principle of odor control.: Sealing
3. A is a compound that "locks-in" vaporous odor molecules.:
sealer
4. Oxidizing agents break down organic matter by adding
: Oxygen
5. Chlorine bleach and ozone gas are .: oxidizers
6. Most deodorants used in smoke odor removal contain a combination of
and agents.: masking ; pairing
7. A combines with and changes a malodorous
substance to create a new odorless compound.: pairing agent
8. is a method of disguising a malodor with a stronger more
pleasant odor.: Masking
9. Oils, gels or solid materials impregnated with fragrances to mask odors work on the
- principle.: time-released
, 10. The process of enzymes breaking down an odor causing organic material (such as milk,
eggs, fish or pet odors) is called .: digestion
11. A micron is a unit of measurement used to describe or
. Particle; droplets
12. Damage to moisture-sensitive materials is a concern when using
.: high volume wet foggers
13. A ULV fogger is used to cold-fog -based
deodorants.: water
14. A fogger is specified primarily for use in the application of water
based formulations where small deodorant droplets are desired that range from 8-15
microns.: ULV
15. A is a device that generates heat to produce
petroleum-based deodorant droplets ranging in size between 0.5 to 2 microns.: thermal
fogger
16. The use of thermal fogging in an odor intense environment can best be described as
an odor modification or treatment.:
counteraction
17. is an oxidizing gas with the chemical symbol 03.: Ozone
18. An electrically powered device used to produce an oxidizing odor-control gas is called
an .: ozone generator
19. Ozone gas is than air.: heavier
