A. Leather
B. Natural Gas
C. None of these
D. Plastic
🧠 Explanation:
Plastic is a man-made substance, widely used for its durability and versatility. For chemistry students, this highlights synthetic materials, making it a key topic for studying polymer science, industrial chemistry, and environmental impacts. Plastics are derived from petroleum. Understanding this ensures knowledge of material production. It’s essential for analyzing chemical engineering, environmental science, and sustainability. Studying plastics offers insights into how synthetic materials shape industries, crucial for chemistry, engineering, and environmental studies, ensuring awareness of their applications, benefits, and environmental challenges in modern manufacturing and waste management.
