Step 1: Understanding the given drugs and their correct uses
- Salvarsan:
- Correctly matched.
- Used to treat syphilis, an infectious disease caused by the bacterium Treponema pallidum.
- Luminal:
- Incorrectly matched.
- Luminal (Phenobarbital) is a barbiturate drug used as an antiepileptic (to control seizures), not as an antidepressant.
- It acts as a central nervous system (CNS) depressant and is commonly prescribed for epilepsy and insomnia.
- Morphine:
- Correctly matched.
- Used as a strong analgesic (pain reliever), particularly for severe pain management, including pain relief in cancer patients and post-surgical recovery.
- However, it is not used for treating cardiac pain specifically, but for pain relief in general.
- Acetylsalicylic acid (Aspirin):
- Correctly matched.
- Used as an antipyretic (fever-reducing) and anti-inflammatory drug.
- It also has mild analgesic properties and is widely used to prevent blood clot formation in cardiovascular diseases.
Step 2: Conclusion
Since Luminal is incorrectly matched as an antidepressant (instead, it is used as an anticonvulsant for epilepsy), the correct answer is Option (2).