TOP 107 SHORT QUESTIONS
UNIT # 1
1. Define Chemistry and Branches of chemistry. 2. Difference between Chemical properties and physical properties. 3. Write down the name of any two elements which were discovered at early ages. 4. Difference between matter and mixture. 5. Define Symbol and valency with example. 6. Give the symbol of Arsenic and silver. 7. How does the homogenous mixture differ from Heterogeneous. 8. Write the chemical formula of Ammonia and Sugar. 9. Calculate the molecular mass of Nitric Acid. 10. Define Free Radical with two examples. 11. Write the difference between Homoatomic and Heteroatomic molecules. 12. Difference between Triatomic molecule and polyatomic molecule. 13. Soft drink is a mixture while water is a compound. Give the reason. 14. Define Atomic mass unit. 15. Difference between Cation and Anion. 16. Difference between ion and free radical. 17. Define Avogadro’s number.
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UNIT # 2
1. When and who discovered proton and neutron. 2. What is the nature of a charge on cathode rays? 3. What are canal rays? 4. Write two properties of Neutron particles. 5. What is meant by Quantum? 6. Difference between shall and sub shall. 7. Define Isotopes. Name the isotopes of Hydrogen. 8. How is U-235 used for power generation? 9. Define Carbonating. 10. A patient has a goiter. How it is diagnosed? 11. Explain the treatment of cancer by radiotherapy. 12. Five characters of cathode rays. 13. Write down defects of Rutherford’s model. 14. What is the maximum capacity of metal? 15. Define Isotopes. Give two examples.
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UNIT # 3
1. What are triads? Give an example. 2. Define Mendeleev’s Periodic law. 3. Difference between Mendeleev’s periodic law and Modern Periodic law. 4. What is meant by periodic function? 5. Define transition elements. 6. Why elements are called s and p block elements. 7. What is meant by Atomic Radius? Write its unit. 8. Why does atomic size increase in a group? 9. Define the Shielding effect. 10. Give the trend of ionization energy in a period. Also, give a reason. 11. What is the trend of Electron affinity in group and period? 12. What is electronegativity? Write its units. 13. Why size of an atom decrease in a period? 14. What is electron affinity? Give an example
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UNIT # 4
1. Why do atoms form chemical bonds? 2. Define a single covalent bond and give one example. 3. Differentiate between donor atom and acceptor atom. 4. Describe at least two necessary conditions for the formation of a Covalent bond. 5. Difference between Polar and Non–Polar covalent bond. 6. Why does a covalent bond become polar? 7. What is meant by Metallic bond? 8. Ice floats on the surface of the water. Giver reason. 9. Ionic Compounds are solids. Explain. 10. What is meant by Co-Ordinate covalent compounds? 11. Why metals are good conductors of electricity. 12. Write down two physical properties of metal.
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UNIT # 5
1. Define a diffusion of gas with an example. 2. Differentiate between Diffusion and effusion. 3. Define Standard atmosphere pressure and write its unit. 4. What do you know about the mobility of gases 5. What is absolute temperature? Write its value. 6. Define Charles’s law. 7. What is vapor pressure? 8. Convert -30 o C to K unit. 9. Why do drops of rainfall downward? 10. Justify why Evaporation is a cooling process. 11. Define the Boiling point and melting point. 12. Difference between crystalline and amorphous solid. 13. Define the term allotropy for an example.
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UNIT # 6
1. Define an aqueous solution. Write its components. 2. Difference between solute and solvent? 3. Define Standard Solution. 4. Write the name of two non-polar solvents. 5. What is meant by mass/mass%? 6. What do you mean by Volume/ Volume % 7? What is meant by Molarity? Also its formula. 8. What is the Tyndall effect? 9. How will you test whether the given solution is a colloidal solution or not? 10. Different between Collide and Suspension. 11. Write two examples of suspension. 12. Why we stir paints thoroughly before use?
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UNIT # 7
1. Define Reduction on the basis of electrons and give example. 2. Define Oxidizing agent with an example. 3. Define Oxidation in terms of electrons and give an example. 4. Define Redox Reaction. Give an example. 5. Difference between Electrolytes and non-Electrolytes. 6. Define anode and cathode. 7. Which force drives the non –spontaneous reaction to take place? 8. Where do the electrons flow from Zn electrode in Daniel’s cell? 9. Difference between Electrolytic cell and Galvanic cell. 10. Define Corrosion. 11. What is a salt bridge? What is its basis function? 12. Write the redox reaction taking place during the electroplating of chromium.
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UNIT # 8
1. How will you compare the electrosensitivity of alkali metals and alkaline earth metals? 2. What do you mean by 24-carat gold? 3. Any two uses of Sodium. 4. Write down two uses of Gold. 5. Write down two uses of Silver. 6. Write the names of noble metal 7. Write chemical properties of non-metal. 8. Describe the non-metallic character in groups and periods of a periodic table. 9. Write any two chemical properties of halogens. 10. Give chemical reaction of methane with chlorine in bright light. 11. Write down the chemical reaction of sodium with H2 and Cl2. 12. Write the chemical reaction of methane with chlorine.
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