1. What is the primary psychophysical theory that explains the detection

of odors?

A) Signal detection theory

B) Odor adaptation theory

C) Dual-process theory

D) Lock and key theory

Answer: D) Lock and key theory

Rationale: The lock and key theory suggests that odors are detected when

odorant molecules fit into specific receptor sites in the olfactory system,

similar to a key fitting into a lock.

2. Which equipment is commonly used for measuring the concentration of

airborne odorants?

A) Gas chromatograph

B) Olfactometer

C) Spectrophotometer

D) Anemometer

Answer: B) Olfactometer

Rationale: An olfactometer is specifically designed to measure the

intensity and concentration of odors and is a standard tool in olfactory

research and odor control studies.

3. What chemical compound is often used for neutralizing sulfur-based

odors?

A) Sodium bicarbonate

B) Chlorine dioxide

C) Activated carbon

D) Ozone

Answer: B) Chlorine dioxide

Rationale: Chlorine dioxide is effective in oxidizing sulfur compounds,

which are common sources of odors, thereby neutralizing the unpleasant

smell.

4. In the context of odor control, what is the purpose of a biofilter?

A) To capture particulate matter

B) To neutralize chemical odors

C) To decompose organic odors biologically

D) To filter out inorganic compounds