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Revision Notes

Drugs and Medicines

Telangana Open School (TOSS) · Class 12 · Chemistry

Quick revision notes for Drugs and Medicines — Telangana Open School (TOSS) Class 12 Chemistry. Key concepts, formulas, and definitions for last-minute revision.

43 questions35 flashcards5 concepts

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Key Topics to Revise

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1. Drugs and Medicines: Definition and Difference

  • Medicines are substances used to treat or prevent diseases and are scientifically tested and approved by authorities like the Drug Controller of India.
  • Drugs are chemical substances that can be used medicinally but also include habit-forming substances like morphine, heroin, and cocaine.
  • All medicines are drugs, but not all drugs are medicines.
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2. Classification of Medicines and Their Actions

  • Medicines are classified based on their action or use.
  • Important classes include antipyretics, analgesics, antiseptics, disinfectants, antacids, antibiotics, antimalarials, tranquilizers, and contraceptives.
  • Each class has specific examples and mechanisms of action.
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3. Important Chemicals and Their Uses

  • Aspirin (acetyl salicylic acid) is prepared from salicylic acid and acetic anhydride.
  • Paracetamol is synthesized from p-aminophenol and acetic anhydride.
  • Phenol is antiseptic at 0.2% but disinfectant at 1% or higher.
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4. Hazards and Alternative Systems

  • Self-medication is dangerous — can lead to overdose, underdose, or drug resistance.
  • Over-the-counter (OTC) medicines (e.g., crocin, aspirin) don’t need prescriptions.
  • Scheduled drugs (e.g., morphine) require prescriptions due to addiction risk.

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Full Notes

Key Concepts

Drugs are chemical substances that affectMedicines are grouped based on theirAntipyretics like paracetamol and aspirin reduceAntiseptics (eAntibiotics like penicillin are made by

Frequently Asked Questions

What are the important topics in Drugs and Medicines for Telangana Open School (TOSS) Class 12 Chemistry?
Drugs and Medicines covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Drugs and Medicines — Telangana Open School (TOSS) Class 12 Chemistry?
Understand the core concepts first, then work through the 43 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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