O Level Chemistry Multiple Choice Questions and Answers: MCQs, Quizzes & Practice Tests. O level chemistry quiz questions and answers with practice tests for online exam prep and job interview prep. O level chemistry study guide with questions and answers about acids and bases, chemical bonding and structure, chemical formulas and equations, electricity and chemistry, electricity and chemicals, elements, compounds and mixtures, energy from chemicals, experimental chemistry, methods of purification, particles of matter, redox reactions, salts and identification of ions and gases, speed of reaction, structure of atom.O level chemistry questions and answers to get prepare for career placement tests and job interview prep with answers key. Practice exam questions and answers about chemistry, composed from O level chemistry textbooks on chapters: Acids and Bases Multiple Choice Questions: 123 MCQsChemical Bonding and Structure Multiple Choice Questions: 75 MCQsChemical Formulae and Equations Multiple Choice Questions: 167 MCQsElectricity and Chemistry Multiple Choice Questions: 107 MCQsElectricity and Chemicals Multiple Choice Questions: 10 MCQsElements, Compounds and Mixtures Multiple Choice Questions: 39 MCQsEnergy from Chemicals Multiple Choice Questions: 41 MCQsExperimental Chemistry Multiple Choice Questions: 18 MCQsMethods of purification Multiple Choice Questions: 84 MCQsParticles of Matter Multiple Choice Questions: 45 MCQsRedox Reactions Multiple Choice Questions: 42 MCQsSalts and Identification of Ions and Gases Multiple Choice Questions: 61 MCQsSpeed of Reaction Multiple Choice Questions: 35 MCQsStructure of Atom Multiple Choice Questions: 52 MCQsO level chemistry interview questions and answers on acid rain, acidity needs water, acidity or alkalinity, acids: properties and reactions, amphoteric oxides, applications of electrolysis, arrangement of particles in atom, atomic mass, atoms and elements, basic acidic neutral and amphoteric, catalysts and enzymes, change of state.O level chemistry test questions and answers on chemical and ionic equations, chemical equations, chemical formulas, chemical reaction: factor affecting, chemical reactions, chemical symbols, chemical to electrical energy, chemistry reactions, collection of gases, college chemistry, conductors and non conductors.O level chemistry exam questions and answers on crystallization of microchips, decanting and centrifuging, dissolving, filtering and evaporating, distillation: purification process, dry cells, electrical devices and circuit symbols, electrolyte and non electrolyte, electrolytes and non-electrolytes, endothermic reactions.O level chemistry objective questions and answers on evaporation, exothermic reactions, fast and slow reactions, GCE o level chemistry, insoluble salts: ionic precipitation, ionic and covalent substances, ionic compounds: crystal lattices, ions and ionic bonds, isotopes: number of neutrons, kinetic particle theory, kinetic theory, making and breaking bonds, mass, volume, time and temperature, measuring speed of reaction, method of purification, methods of purification: sublimation, mineral acids: general properties, mixtures and compounds, molar mass, molecules and compounds, molecules and covalent bonds, molecules and macromolecules, neutralization, o level chemistry: states of matter, ordinary level chemistry, organic acid, organic solvents, oxidation and reduction.O level chemistry certification questions on oxidation reduction reactions, paper chromatography, percent composition of elements, periodic table: o level chemistry, PH scale: acid and alkali, polarization, properties: bases and reactions, proton and nucleon number, protons, neutrons and electrons, pure substances and mixtures, reactants, redox reaction: oxidation, redox reactions, relative molecular mass, salts: hydrogen of acids, save energy: o level chemistry, separating funnel and fractional distillation.