🌟 9th Class Chemistry – Unit 1: Solved Short Questions
(FBISE & Punjab Boards)
1. How does chemistry help a doctor to understand medicine?
Chemistry allows doctors to understand the structure, properties, and reactions of drugs. With this knowledge, they can prescribe the right medicine, determine the correct dosage, and avoid harmful interactions between different medicines.
2. How does technological innovation contribute to developing new materials?
Technology helps scientists create advanced materials like polymers, alloys, and nanomaterials. These new materials improve construction, electronics, healthcare, and much more.
3. Differentiate between Geochemistry and Astrochemistry.
- Geochemistry: Focuses on Earth’s chemical composition and processes.
- Astrochemistry: Studies chemical reactions in space, including the formation of stars and planets.
4. How are science, technology, and engineering interrelated? (With Example)
Example: Battery
- Science explains how chemical reactions produce electricity.
- Technology applies this knowledge to design batteries.
- Engineering builds devices like mobile phones that use these batteries.
5. Compare Organic and Inorganic Chemistry using a Venn diagram approach.
- Organic Chemistry: Studies carbon compounds.
- Inorganic Chemistry: Studies all other elements and compounds.
Both deal with matter, reactions, and contribute to useful products.
6. What are the uses of nuclear chemistry?
- Producing nuclear power
- Treating cancer through radiotherapy
- Performing medical imaging (like radiotracers)
- Preserving food using radiation
7. Define chemistry and its interaction with matter and energy.
Chemistry is the science that studies the composition, structure, and properties of matter and how it interacts with energy, especially during chemical reactions.
8. What are the daily life applications of inorganic chemistry?
Inorganic chemistry is used in:
- Fertilizers
- Paints
- Cement
- Glass
- Water purification
- Medicines
- It plays an essential role in agriculture, industry, and health.
9. How are science, technology, and engineering connected?
- Science discovers principles (e.g., electricity).
- Technology applies them (e.g., electric motors).
- Engineering uses these to design practical systems (e.g., electric cars).
10. What role does chemistry play in environmental science?
Chemistry helps:
- Monitor and reduce pollution
- Treat wastewater
- Design eco-friendly products
- Understand natural cycles like the carbon and nitrogen cycles
11. How does geochemistry help tackle pollution and climate change?
Geochemistry helps by:
- Tracing pollutants in air, soil, and water
- Studying climate patterns
- Offering solutions for environmental protection
12. How is organic chemistry applied in different fields?
- Medicine: Drug development
- Biochemistry: Understanding life processes
- Industry: Making plastics, synthetic fibers, and dyes
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