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Green International University9 Questions

Cosmetic Chemistry MCQs

Practice Cosmetic Chemistry multiple-choice questions for Green International University competitive exams. Each question includes the correct answer and a short explanation, and past-paper questions are marked so you can revise both repeated and fresh material in one place.

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Mineral oil
Glycerin
Beeswax
Stearic acid
ExplanationGlycerin is a humectant, meaning it attracts water from the atmosphere and holds it to the skin surface.
To act as a preservative
To bind oil and water together in a stable mixture
To increase the fragrance of the product
To act as a physical sunscreen
ExplanationEmulsifiers have both hydrophilic and lipophilic ends, allowing oil and water to mix without separating.
To balance the pH
To reduce surface tension and lift dirt and oil
To provide fragrance
To provide UV protection
ExplanationSurfactants have hydrophilic and lipophilic heads/tails that allow water and oil to mix, effectively lifting debris.
Droplets of oil dispersed in water
Droplets of water dispersed in oil
Solid particles suspended in a liquid
A clear, homogenous solution
ExplanationIn a water-in-oil emulsion, water is the internal phase (droplets) and oil is the external phase.
To act as a thickener
To increase the shelf life by binding to metal ions that cause product instability
To exfoliate dead skin cells
To provide a cooling sensation
ExplanationChelating agents bond with metal ions (like calcium/magnesium) to prevent them from destabilizing the formula.
It determines the product's color
It affects the stability of the product and the skin's acid mantle balance
It dictates the scent strength of the product
It is only relevant for soap-based products
ExplanationThe skin has a natural acidic pH (approx 5.5). Products should be formulated to respect this to avoid barrier disruption.
Salicylic acid
Glycolic acid
Benzoyl peroxide
Hyaluronic acid
ExplanationGlycolic acid is a common AHA derived from sugar cane used for chemical exfoliation.
To change the skin color
To prevent microbial growth
To act as a surfactant
To increase pH balance
ExplanationPreservatives are essential to inhibit the growth of bacteria, fungi, and mold, ensuring the safety and shelf-life of products.
Cyclomethicone
Glycerin
Lactic Acid
Sodium Lauryl Sulfate
ExplanationCyclomethicone is a common volatile silicone used to give products a smooth feel and improve spreadability.

Frequently Asked Questions

Are these Cosmetic Chemistry MCQs free?

Yes. Every Cosmetic Chemistry MCQ on this page is free to practice, including the correct answer and explanation.

Do these include past-paper questions?

Yes — questions sourced from past papers are clearly marked with a "Past Paper" badge, alongside fresh practice questions.

Which exams do these Cosmetic Chemistry MCQs help with?

They are aimed at Green International University and related Pakistani competitive exams that test Cosmetic Chemistry.

How should I practice subject-wise MCQs?

Attempt each question first, then reveal the answer and read the explanation. Short, focused sessions on one subject work better than long unstructured reading.

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