9th Class Guess Paper on Chemistry (Annual Exam 2020). Solved Important Questions for Islamabad Model Schools & Colleges / Federal Board (FBISE) Islamabad. The students of Islamabad Capital Territory (ICT) studying in Islamabad Model Schools & Colleges (ICB, ICG, IMCB, IMCG) can utilize our guess papers with full trust & confidence. These guess papers (Important Questions) are guarantee to get good marks in your annual exams. These guess papers can also be utilized by the students of other boards & schools/colleges of Punjab Province who are studying the same syllabus & course. These papers are prepared as per latest scheme of studies prescribed by Federal Board of Intermediate & Secondary Education, Islamabad (FBISE) and Federal Directorate of Education (FDE), Islamabad having studied all the past papers and through the experience gained from these papers.
9th Class Guess Paper on Chemistry (Annual Exam 2020):
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Important Questions:
- What was the concept of Empedocles and Aristotle regarding matter.
- Differentiate between Empirical Formula and Molecular Formula.
- Define Free Radical and Formula Unit.
- Write the Formation of NA+ ion.
- Explain Auf Bau Principal.
- Write down the electronic configuration of Potassium 19K39.
- Explain Rutherford Experiment and discovery of nucleus. Also write its defects.
- Write down the uses of Iodine-131, Iodine-123, Cobalt-60, Carbon-14 and Sulphur-35.
- What is the difference and similarity between 17Cl35 and 17Cl37.
- Write down the postulates of Bohr’s atomic theory.
- Why “Na” has higher ionization energy than “K”?
- Write down the valance shell electronic configuration of Alkali Metals, Alkaline Earth Metals, Halogens and Nobel Gases.
- Explain Normal and Transition elements with examples.
- Write down the concept of Newland’s and Mendeleev.
- Explain Periodicity of Properties.
- What is Shielding Effect. Write down its trend in periodic table.
- What is Ionization Energy. Write down its trend in periodic table.
- What is Electron Affinity. Write down its trend in periodic table.
- What is Electro-negativity. Write down its trend in periodic table.
- State Octet and Duplet Rules.
- How does Al form cations?
- How does O form anions?
- Draw the Electron Dot and Electron Cross structure of H2O.
- Write down the types of covalent bond with examples.
- Explain the formation of Sr+2 and Ba+2.
- Write equations with dot and cross structures of i) K and Cl ii) Al and N
- Is there a need for more adhesives? What is the importance of glues and adhesives?
- Why do the atoms react together and how?
- What is hydrogen bonding? Explain dipole dipole interactions.
- Is evaporation a cooling process?
- Differentiate between diffusion and effusion.
- Define and explain Boyle’s Law and Charles Law.
- When you put nail polish on your palm, you will feel a sensation of coldness. Why?
- Write down the names of allotropic forms of sulphur.
- Explain Redox reaction in photography.
- What are uses of Down’s cell and Nelson’s cell?
- Write process of electrolytic refining of copper.
- Differentiate between Electrolytic cell and Galvanic cell.
- Write down the importance of Mg.
- What do you know about application of platinum.
- What is Aqua Regia?
- Why it is advised not to pick Sodium metal with fingers?
- Can Iodine displaces Cl2 or Br2 from their salts?
- Why non-metals are electro-negative in nature?
- Write about the Strontium-90.
- What do you know about Inertness of Nobel Gases?
- What is Rolled Gold?
- What do you know about halogens?
- What are hallides?
- Explain Saturated, unsaturated and super saturated solutions.
- What do you know about Ozone?
- Define Alloys.
- Define Molarity.
- Write the usage of Potassium dichromate (K2Cr2O7)
- What is Colloid and Suspension
Other Important Things:
- Objectives
- Numericals
- Diagrams