Make 9Th Class Chemistry Paper of your own choice

MCQs:
Fourth state of matter is:... Boiling point of water:... Graphene is allotrope of:... Plasma is found in:... Unit of pressure:... Dry ice is solid:... Density of gas is:... Example of sublimation:...

Short Questions:
Define Plasma.... What is Graphene? Give its use.... Define Allotropy.... What is Sublimation?... Define Diffusion.... What is Vapor Pressure?... Properties of Solids.... Why evaporation causes cooling?... Define Boiling Point.... Differentiate Amorphous vs Crystalline.... What is effusion?... Define standard atmospheric pressure....

Long Questions:
Explain the properties of Solid, Liquid and Gas.... What is Vapor Pressure? Explain factors affecting it.... Describe Plasma state.... Explain Allotropes of Carbon....

MCQs:
Proton discovered by:... Neutron is:... Isotopes of Carbon:... Rutherford used foil of:... Shell n=2 is:... Mass of electron:... U-235 used for:... Charge on nucleus:...

Short Questions:
Define Isotopes.... Who discovered Neutron?... Electronic config of Carbon.... Defects of Rutherford Model.... Uses of U-235.... Define Mass Number.... What are Canal Rays?... Difference: Shell vs Subshell.... What is Carbon Dating?... Config of Na+ ion.... Plum Pudding Theory.... Properties of Cathode Rays....

Long Questions:
Explain Bohr Atomic Model.... Describe Rutherford Experiment.... Uses of Isotopes.... Properties of Neutrons....

MCQs:
Bond in NaCl:... Sharing of electrons forms:... Water molecule has:... Octet rule means electrons:... Ice floats due to:... Triple bond electrons:... BF3 is electron:... Ability to attract electrons:...

Short Questions:
Define Ionic Bond.... State Octet Rule.... Define Hydrogen Bonding.... What is Coordinate Covalent bond?... Define Electronegativity.... Difference: Polar vs Non-polar.... Why atoms react?... Define Metallic Bond.... Structure of NH3.... What is a lone pair?... Why ice floats?... Define Duplet Rule....

Long Questions:
Explain types of Covalent Bonds.... Explain Hydrogen Bonding.... Describe Ionic Bond with example.... Properties of Ionic Compounds....

MCQs:
Avogadro Number:... Molar mass of H2O:... 1 mole of C atoms:... Unit of Molar Mass:... Empirical formula of C6H6:... Stoichiometry deals with:... Mass of 1 mole NaCl:... Example of molecule:...

Short Questions:
Define Mole.... What is Avogadro Number?... Empirical vs Molecular Formula.... Calculate molar mass of H2SO4.... Define Molar Mass.... What is a chemical equation?... Differentiate atom and ion.... Formula of Glucose.... Define Gram Atomic Mass.... What is formula unit?... Why we use mole?... Calculate formula mass of NaCl....

Long Questions:
Relationship between Mass and Mole.... Explain Avogadros Number.... How to calculate Empirical Formula?... Differentiate Compound and Mixture....

MCQs:
Exothermic reaction releases:... Unit of Enthalpy:... Bond breaking is:... Respiration is:... Energy of activation:... Burning of coal is:... Photosynthesis is:... Heat absorbed in:...

Short Questions:
Define Exothermic Reaction.... What is Activation Energy?... Define Enthalpy.... Define Endothermic Reaction.... System vs Surroundings.... Why respiration is exothermic?... Define Heat of Neutralization.... What is standard state?... Sign of Delta H for Exothermic.... Example of Endothermic process.... What is internal energy?... Bond breaking vs formation....

Long Questions:
Differentiate Exothermic vs Endothermic.... Explain Energy Profile Diagram.... Importance of Energetics.... Explain Enthalpy Change....

MCQs:
Reaction in both directions:... Kc is:... Unit of Kc depends on:... Active mass represented by:... At equilibrium rate is:... Dynamic means:... Catalyst alters:... H2 + I2 = ?...

Short Questions:
Define Dynamic Equilibrium.... State Le Chatelier Principle.... What is Reversible Reaction?... Define Kc.... Law of Mass Action.... Define Irreversible Reaction.... Effect of Temp on Equilibrium.... What is Active Mass?... Write Kc for H2+I2=2HI.... Why equilibrium is dynamic?... Effect of Catalyst.... Conditions for Equilibrium....

Long Questions:
Explain Law of Mass Action.... Factors affecting Equilibrium.... Importance of Kc.... Describe Haber Process....

MCQs:
pH of pure water:... Acid turns litmus:... Base accepts:... Taste of acid is:... pH + pOH =... Lewis acid accepts:... Strong acid example:... Base turns phenolphthalein:...

Short Questions:
Define Bronsted Acid.... What is pH?... Uses of HCl.... Define Neutralization.... What is Lewis Base?... Difference: Acid vs Base.... Formula of Sulfuric Acid.... Define Indicator.... What is a Salt?... Uses of NaOH.... Arrhenius Concept.... What is Acid Rain?...

Long Questions:
Explain Lewis concept.... Properties of Acids.... Bronsted-Lowry Concept.... Uses of Salts....

MCQs:
Vertical columns:... Modern Periodic Law base:... Total groups:... Halogens Group:... Noble gases are:... Horizontal rows:... 1st period elements:... Alkali metals group:...

Short Questions:
Define Ionization Energy.... What is Electron Affinity?... Define Shielding Effect.... Trends in Period.... What is Periodic Law?... Define Atomic Radius.... Why noble gases stable?... What are Groups?... What are Periods?... Electronegativity trend.... Define Electronegativity.... Mendeleev Periodic Law....

Long Questions:
Explain Ionization Energy trends.... Discuss Shielding Effect.... History of Periodic Table.... Metals vs Non-metals....

MCQs:
Group 1 elements:... Most reactive metal:... Color of Chlorine:... Halogen means:... Valency of Group 2:... Mg found in:... Noble gas in lights:... Flourine is:...

Short Questions:
Why Alkali metals reactive?... Properties of Noble Gases.... Uses of Halogens.... Na in kerosene?... Properties of Group 2.... Occurrence of Mg.... Uses of Helium.... Alkaline Earth Metals?... Na reaction with Water.... Color of Halogens.... Config of Cl.... Why noble gases inert?...

Long Questions:
Compare Alkali & Alkaline Earth.... Discuss Halogens family.... Uses of Noble Gases.... Reactivity of Group 1....

MCQs:
Main gas in air:... Ozone protects from:... Global warming gas:... pH of acid rain:... Percentage of N2:... Pollutant from cars:... Ozone formula:... Cause of acid rain:...

Short Questions:
Effects of Acid Rain.... Define Global Warming.... What is Ozone Depletion?... Define Pollutants.... Greenhouse Effect.... Components of Air.... Effects of CO.... How Ozone is formed?... What is Smog?... Water Pollution causes.... Effect of Ozone hole.... Define Atmosphere....

Long Questions:
Explain Greenhouse Effect.... Acid Rain causes/effects.... Discuss Ozone Depletion.... Types of Pollution....

MCQs:
Alkane formula:... Simplest Alkane:... Benzene formula:... Alkenes have:... Saturated hydrocarbon:... Methane is:... Alkynes have:... Combustion gives:...

Short Questions:
Define Hydrocarbons.... Saturated vs Unsaturated.... Uses of Methane.... Formula of Benzene.... Define Homologous Series.... Structure of Ethane.... What are Alkenes?... Combustion of Methane.... Define Functional Group.... Uses of Acetylene.... Alkane vs Alkene.... General formula Alkyne....

Long Questions:
Classify Hydrocarbons.... Properties of Alkanes.... Uses of Hydrocarbons.... Explain Homologous Series....

MCQs:
Data collected by:... X-axis shows:... Y-axis shows:... Graph is:... Pie chart is:... Mean is:... Error in data:... Unit of mass:...

Short Questions:
What is Data Analysis?... Importance of Graph.... Define Variable.... Types of Errors.... What is Mean?... Use of Bar Chart.... Define Accuracy.... What is Precision?... Independent vs Dependent.... Why record data?... Define Empirical Data.... Safety in Lab....

Long Questions:
Interpret experimental data.... Scientific Method steps.... Importance of Measurement.... Types of Graphs....

MCQs:
Volume measured by:... Mass measured by:... Pipette used for:... Titration uses:... Acid in eye:... Bunsen burner gives:... Funnel is for:... Safety goggles protect:...

Short Questions:
Safety rules in Lab.... Use of Pipette.... Define Titration.... Use of Burette.... How to filter?... First aid acid burn.... Use of Balance.... What is Meniscus?... Cleaning glassware.... Hazard symbols.... Measuring Cylinder.... Why wear lab coat?...

Long Questions:
Titration Apparatus.... Filtration process.... Lab Safety Precautions.... Prepare a solution?...