Explanation:
The question asks which substances nail polish, naphthalene balls, and paints may contain. Let's break down the options and explain why each one is correct or incorrect.
A: Sugar
- Nail polish, naphthalene balls, and paints do not contain sugar. Therefore, this option is incorrect.
B: Salt
- Nail polish, naphthalene balls, and paints do not contain salt. Therefore, this option is incorrect.
C: Poison
- Nail polish may contain harmful chemicals such as formaldehyde, toluene, and phthalates, which can be toxic if ingested. Naphthalene balls are used as moth repellents and can be toxic if consumed. Paints may contain lead or other harmful substances. Therefore, this option is correct.
D: Juice
- Nail polish, naphthalene balls, and paints do not contain juice. Therefore, this option is incorrect.
Answer: C (Poison)
- Nail polish, naphthalene balls, and paints may contain toxic substances, making them potentially harmful if ingested or used improperly.
In summary, the correct answer is C: Poison. Nail polish, naphthalene balls, and paints may contain toxic substances that can be harmful to humans.

Nail Polish, Naphthalene Balls, and Paints: Understanding Their Composition
Nail polish, naphthalene balls, and paints are commonly used products that may contain harmful substances.
What They Are Made Of
- Nail Polish: Typically contains solvents like toluene and acetone, along with pigments and film-forming agents. These chemicals are necessary for the polish to adhere to nails and dry quickly.
- Naphthalene Balls: Primarily composed of naphthalene, a polycyclic aromatic hydrocarbon that can be toxic if ingested or inhaled. These balls are commonly used as moth repellents.
- Paints: Often contain a mix of pigments, binders, solvents, and additives. Many of these components can be harmful, especially if they contain heavy metals or volatile organic compounds (VOCs).
Why They Are Considered Poisonous
- Toxic Ingredients: The presence of chemicals like toluene, naphthalene, and various solvents makes these products potentially hazardous.
- Health Risks: Inhalation or ingestion of these substances can lead to serious health issues, including respiratory problems, skin irritation, and even neurological effects.
- Proper Handling: It’s essential to use these products in well-ventilated areas and follow safety guidelines to minimize risk.
Conclusion
In summary, nail polish, naphthalene balls, and paints can contain poisons due to their chemical components. Understanding these risks helps ensure safe usage and handling of these everyday items. Always prioritize safety by choosing non-toxic alternatives when available.