Q. Which metal compound is used for treatment of carcinoma?

Correct Answer: c) Platinum

Explanation:
Platinum-based compounds (notably cisplatin, carboplatin, and oxaliplatin) are widely used chemotherapeutic agents for various carcinomas. They work by forming cross-links with DNA, which blocks DNA replication and transcription, leading to cancer cell death. Iron is used to treat anemia, chromium is a trace element involved in glucose metabolism, and chlorine is a disinfectant—not anticancer drugs.