ELECTROLYSIS IBEC & LASER STATE
BOARD COMPREHENSIVE EXAM
QUESTIONS AND CORRECT ANSWERS.
1. Which chemical is produced at the cathode during galvanic electrolysis?
A. Hydrochloric Acid
B. Oxygen Gas
C. Sulfuric Acid
D. Sodium Hydroxide
Answer: D
Conceptual Explanation: In galvanic electrolysis, the cathode (negative pole) produces
Sodium Hydroxide (Lye) and Hydrogen gas through the process of chemical decomposition.
2. What is the primary chromophore for hair removal lasers?
A. Hemoglobin
B. Water
C. Melanin
D. Protein
Answer: C
,Conceptual Explanation: Melanin in the hair shaft and bulb is the primary target
(chromophore) in laser hair removal to achieve selective photothermolysis.
3. Which wavelength is associated with the Nd:YAG laser, commonly used for darker skin
types?
A. 755 nm
B. 810 nm
C. 1064 nm
D. 694 nm
Answer: C
Conceptual Explanation: The Nd:YAG laser operates at 1064 nm, which has lower
melanin absorption, making it safer for higher Fitzpatrick skin types (IV-VI).
4. According to Faraday’s Law, what is the formula to calculate units of lye?
A. Amps x Volts
B. Ohms x Time
C. Milliamperes x Seconds
D. Watts / Volts
Answer: C
, Conceptual Explanation: One unit of lye is produced by 0.1 mA of current flowing for one
second. Therefore, Milliamperes (intensity) multiplied by time (seconds) determines total
lye.
5. In Thermolysis, the heat is greatest at the tip of the needle. This phenomenon is known as:
A. The Point Effect
B. The Faraday Cage
C. The Joule Effect
D. The Electro-desiccation effect
Answer: A
Conceptual Explanation: The point effect refers to the concentration of high-frequency
current density at the tip of the needle, resulting in localized heat.
6. Which hair growth phase is most ideal for permanent hair removal?
A. Anagen
B. Catagen
C. Telogen
D. Exogen
Answer: A
Conceptual Explanation: Anagen is the active growth phase where the hair is still
attached to the dermal papilla, making it the most vulnerable to destruction.
BOARD COMPREHENSIVE EXAM
QUESTIONS AND CORRECT ANSWERS.
1. Which chemical is produced at the cathode during galvanic electrolysis?
A. Hydrochloric Acid
B. Oxygen Gas
C. Sulfuric Acid
D. Sodium Hydroxide
Answer: D
Conceptual Explanation: In galvanic electrolysis, the cathode (negative pole) produces
Sodium Hydroxide (Lye) and Hydrogen gas through the process of chemical decomposition.
2. What is the primary chromophore for hair removal lasers?
A. Hemoglobin
B. Water
C. Melanin
D. Protein
Answer: C
,Conceptual Explanation: Melanin in the hair shaft and bulb is the primary target
(chromophore) in laser hair removal to achieve selective photothermolysis.
3. Which wavelength is associated with the Nd:YAG laser, commonly used for darker skin
types?
A. 755 nm
B. 810 nm
C. 1064 nm
D. 694 nm
Answer: C
Conceptual Explanation: The Nd:YAG laser operates at 1064 nm, which has lower
melanin absorption, making it safer for higher Fitzpatrick skin types (IV-VI).
4. According to Faraday’s Law, what is the formula to calculate units of lye?
A. Amps x Volts
B. Ohms x Time
C. Milliamperes x Seconds
D. Watts / Volts
Answer: C
, Conceptual Explanation: One unit of lye is produced by 0.1 mA of current flowing for one
second. Therefore, Milliamperes (intensity) multiplied by time (seconds) determines total
lye.
5. In Thermolysis, the heat is greatest at the tip of the needle. This phenomenon is known as:
A. The Point Effect
B. The Faraday Cage
C. The Joule Effect
D. The Electro-desiccation effect
Answer: A
Conceptual Explanation: The point effect refers to the concentration of high-frequency
current density at the tip of the needle, resulting in localized heat.
6. Which hair growth phase is most ideal for permanent hair removal?
A. Anagen
B. Catagen
C. Telogen
D. Exogen
Answer: A
Conceptual Explanation: Anagen is the active growth phase where the hair is still
attached to the dermal papilla, making it the most vulnerable to destruction.
