This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 10 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following will slow down the rate of a chemical reaction A) Absence of a catalyst. B) The concentration is increased. C) The temperature is increased. D) Both concentration and temperature is increased. Show Answer Correct Answer: A) Absence of a catalyst. 2. What subatomic particles are found in the nucleus and have a positive charge? A) Protons. B) Electrons. C) Neutrons. D) None of above. Show Answer Correct Answer: A) Protons. 3. Which substance is an element? A) Water (H2O). B) Carbon Dioxide (CO2). C) Chlorine (Cl). D) Ammonia (NH3). Show Answer Correct Answer: C) Chlorine (Cl). 4. When you have something that does not dissolve it is referred to as being A) A solid. B) A nail. C) A rock. D) Insoluble. Show Answer Correct Answer: D) Insoluble. 5. What element symbol is represented by O A) Chlorine. B) Carbon. C) Oxygen. D) Osmium. Show Answer Correct Answer: C) Oxygen. 6. A forensic scientist uses chemistry to find information at the scene of the crime A) Organic chemistry. B) Theoretical chemistry. C) Biochemistry. D) Analytical chemistry. Show Answer Correct Answer: D) Analytical chemistry. 7. Which substance is not produced during the combustion of alkanes? A) C. B) CO. C) H2. D) CO2. Show Answer Correct Answer: C) H2. 8. A solid substance that form from a solution. A) Sediment. B) Fractional crystallization. C) Element. D) Precipitate. Show Answer Correct Answer: D) Precipitate. 9. Bond energy is the energy A) Required to form a chemical bond. B) Released when a chemical bond breaks. C) Required to break a chemical bond. D) Absorbed when a chemical bond forms. Show Answer Correct Answer: C) Required to break a chemical bond. 10. Which among the following is a NOT matter? A) Air. B) Water. C) Heat. D) Gold. Show Answer Correct Answer: C) Heat. 11. What is the definition of an element? A) The smallest part of any substance which can exist on its own. B) Two or more atoms chemically joined together (can be the same or can be different). C) A simple substance in which all the atoms are identical. D) Two or more different elements chemically joined together. Show Answer Correct Answer: C) A simple substance in which all the atoms are identical. 12. STP (standard temperature and pressure) A) A reaction that releases energy in the form of heat. B) The process of burning something. C) Conditions of 0.00$^ \circ$C and 1 atm pressure. D) The study of energy changes that occur during chemical reactions and changes in state. Show Answer Correct Answer: C) Conditions of 0.00$^ \circ$C and 1 atm pressure. 13. The ..... is the substance being dissolved. A) Solution. B) Solvent. C) Mixture. D) Solute. Show Answer Correct Answer: D) Solute. 14. Which of the following is an exothermic process A) Evaporation of water. B) Reaction of water with quick lime. C) Sublimation of camphor. D) All of the above. Show Answer Correct Answer: B) Reaction of water with quick lime. 15. What product is formed when CH3CH(OH)CH3 is reacted with acidified potassium dichromate(VI)? A) CH3CH2CHO. B) CH3CH2COOH. C) CH3COCH3. D) CH3COOCH3. Show Answer Correct Answer: C) CH3COCH3. 16. What is the law of conservation of matter? A) The Law of Conservation of Matter states that during a reaction matter can be created and destroyed. B) The Law of Conservation of Matter states that during a reaction no matter is created nor destroyed. C) The Law of Conservation of Matter states that matter goes through changes called a phase change. D) None of above. Show Answer Correct Answer: B) The Law of Conservation of Matter states that during a reaction no matter is created nor destroyed. 17. If the mass of $ H_2O$ in a glass is $ 36g$ . then calculate the $ no.\ of\ moles$ if the $ molar\ mass$ of $ H_2O$ is $ 18g$ . HINT:use the following formula:$ No.\ of\ moles=\frac{Mass\ in\ g}{Molar\ mass}$ A) 2 moles. B) 0.5 moles. C) 5 moles. D) None of above. Show Answer Correct Answer: A) 2 moles. 18. Which statement about a homologous series is correct? A) Members of the series have the same empirical formula. B) Members of the series have similar chemical properties. C) Members of the series have the same physical properties. D) Members of the series differ by CH3. Show Answer Correct Answer: B) Members of the series have similar chemical properties. 19. Number of branches of chemistry A) 7. B) 5. C) 8. D) 2. Show Answer Correct Answer: C) 8. 20. State the changes in the methyl orange indicator inside the conical flask containing potassium hydroxide solution, KOH when it reaches end point. A) Yellow to orange. B) Yellow to red. C) Red to yellow. D) Pink to colorless. Show Answer Correct Answer: A) Yellow to orange. 21. Non-crystalline solids are ..... A) Amorphic solids. B) Amorphorous solids. C) Amorphous solids. D) None of above. Show Answer Correct Answer: C) Amorphous solids. 22. Which particles make up the nucleus of an atom? A) Protons and neutrons. B) Electrons and protons. C) Electrons, protons, and neutrons. D) Electrons and neutrons. Show Answer Correct Answer: A) Protons and neutrons. 23. The study of carbon containing compounds. A) Inorganic Chemistry. B) Physical Chemistry. C) Biochemistry. D) Organic Chemistry. Show Answer Correct Answer: D) Organic Chemistry. 24. Something that takes up space and has mass. A) Mass. B) Matter. C) Volume. D) Density. Show Answer Correct Answer: B) Matter. 25. A substance formed when two or more elements are chemically bonded together A) Compound. B) Element Soup. C) Ion. D) Pure Element. Show Answer Correct Answer: A) Compound. 26. Identify the functional group present in HCOCH2CH3. A) Ester. B) Aldehyde. C) Ketone. D) Alcohol. Show Answer Correct Answer: B) Aldehyde. 27. How many valence electrons are in the Halogen family elements? A) 7. B) 9. C) 10. D) 8. Show Answer Correct Answer: A) 7. 28. The electrons involved in the formation of a chemical bond are called A) Dipoles. B) Valence electrons. C) S electrons. D) Lewis electrons. Show Answer Correct Answer: B) Valence electrons. 29. Solid, liquid and gas are examples of? A) Temperature. B) Scale. C) Phases. D) Refute. Show Answer Correct Answer: C) Phases. 30. An ..... does not allow electricity or heat to flow through it easily. A) Insulator. B) Combustion. C) Luster. D) Conductor. Show Answer Correct Answer: A) Insulator. 31. Which particle has a positive charge? A) Orbital. B) Electron. C) Neutron. D) Proton. Show Answer Correct Answer: D) Proton. 32. What year was the periodic table made? A) 1986. B) 1847. C) 1932. D) 1869. Show Answer Correct Answer: D) 1869. 33. Air, water, glass and antacid tablets are (#####) A) Metric system. B) Heterogeneous. C) Homogeneous. D) Matter. Show Answer Correct Answer: D) Matter. 34. A change in matter in which the substances that make up the matter change into other substances with different chemical and physical properties A) Chemical change. B) Physical change. C) Chemical property. D) Physical property. Show Answer Correct Answer: A) Chemical change. 35. How many valence electrons do elements in Group 2A have? A) 4. B) 2. C) 1. D) 12. Show Answer Correct Answer: B) 2. 36. The chemical equation shows the reaction between excess sulphuric acid solution with sodium hydroxide solution.2NaOH (aq) + H2SO4 (aq) $\rightarrow$ Na2SO4 (aq) + 2H2O12.5 cm3 of 0.5 mol dm-3 sulphuric acid solution neutralises 50 cm3 of sodium hydroxide. Determine the concentration of the sodium hydroxide solution. A) 0.20 mol dm-3. B) 0.50 mol dm-3. C) 0.10 mol dm-3. D) 0.25 mol dm-3. Show Answer Correct Answer: D) 0.25 mol dm-3. 37. Mixture, such as mixed nuts or dry soup mix, in which different materials are unevenly distributed and are easily identified. A) Homogeneous mixture. B) Suspension. C) Heterogeneous mixture. D) Colloid. Show Answer Correct Answer: C) Heterogeneous mixture. 38. Substance formed in a chemical reaction A) Compound. B) Product. C) Reactant. D) Molecule. Show Answer Correct Answer: B) Product. 39. Bonds between atoms in a molecule form as a result of the sharing or exchanging of ..... electrons. A) Valence. B) Ionic. C) Innermost. D) Charged. Show Answer Correct Answer: A) Valence. 40. Fats are immiscible in water because ..... A) Water is polar and fats are polar. B) Water is polar and fats are non polar. C) Water is non polar and fats are polar. D) None of above. Show Answer Correct Answer: B) Water is polar and fats are non polar. 41. On the Periodic Table each element increases by one ..... A) Electron. B) Proton. C) Neutron. D) Letter. Show Answer Correct Answer: B) Proton. 42. Unsaturated fats such as oils can be hardened by which type of reaction? A) Addition. B) Hydrolysis. C) Condensation. D) None of above. Show Answer Correct Answer: A) Addition. 43. Propanitrile can be prepared by reacting bromoethane with potassium cyanide. Which statement is not correct about the reaction between bromoethane and potassium cyanide? A) Homolytic fission occurs between the carbon-bromine bond in bromoethane. B) The reaction is bi-molecular. C) The cyanide ion, :CN-, acts as a nucleophile. D) The reaction follows the SN2 mechanism. Show Answer Correct Answer: A) Homolytic fission occurs between the carbon-bromine bond in bromoethane. 44. Elements that have properties of both metals and nonmetals. A) Inner transition. B) Representative elements. C) Transition. D) Metalloids. Show Answer Correct Answer: D) Metalloids. 45. Why are LDLs (Low-Density Lipoproteins) considered "losers" A) They transport excess cholesterol to arteries. B) They are processed through the body very slowly. C) They are found in every fatty food. D) They transport excess cholesterol back to liver. Show Answer Correct Answer: A) They transport excess cholesterol to arteries. 46. Which two particles would you find in the nucleus of an atom? A) Electrons and Ions. B) Electrons and Neutrons. C) Protons and Electrons. D) Protons and Neutrons. Show Answer Correct Answer: D) Protons and Neutrons. 47. An ion that has a positive charge. A) Cation. B) Oxyanion. C) Monoatomic ion. D) Anion. Show Answer Correct Answer: A) Cation. 48. Which of the following symbols represents a compound? A) Br. B) Fe. C) CO. D) Co. Show Answer Correct Answer: C) CO. 49. What are the two main categories of elements onthe periodic table? A) Alloys or metals. B) Metals and nonmetals. C) Solutions and compounds. D) Pure substances and mixtures. Show Answer Correct Answer: B) Metals and nonmetals. 50. Why are HDLS (High-Density Lipoproteins) considered the "heroes" ? A) They transport excess cholesterol back to liver. B) They are found in every fatty food. C) They transport excess cholesterol to arteries. D) They are processed through the body very quickly. Show Answer Correct Answer: A) They transport excess cholesterol back to liver. 51. Solution where more solute can still be dissolved at the given temperature. A) Unsaturated. B) Supersaturated. C) Homogeneous solution. D) Saturated. Show Answer Correct Answer: A) Unsaturated. 52. What is unique about carbon? A) Ability to bond with oxygen. B) Properties as an enzyme. C) Bonding properties. D) Properties as a reactant. Show Answer Correct Answer: C) Bonding properties. 53. Whenobserving a salad with lettuce, carrots, radishes, and cucumbers, a studentcorrectly classified it as which of the following? A) A compound. B) A heterogeneous mixture. C) An element. D) A homogeneous mixture. Show Answer Correct Answer: B) A heterogeneous mixture. 54. The smallest building block of all matter in the universe. A) Atom. B) Matter. C) Proton. D) Element. Show Answer Correct Answer: A) Atom. 55. Which correctly lists elements? A) S2Fe, Al, Sr, O. B) C, fe, al, sr. C) C, Fe, Al, Sr. D) H2o, C, Al, S. Show Answer Correct Answer: C) C, Fe, Al, Sr. 56. Measure of the space occupied by an object. A) Matter. B) Volume. C) Mass. D) Solid. Show Answer Correct Answer: B) Volume. 57. What is the correct chemical formula for strontium acetate? A) Sr2C2H3O2. B) Sr(C2H3O2)2. C) SrC2H3O2. D) Sr(C2H3O2)3. Show Answer Correct Answer: B) Sr(C2H3O2)2. 58. Which state of matter has a fixed shape and volume and it's molecules move very slowly? A) Solid. B) Plasma. C) Gas. D) Liquid. Show Answer Correct Answer: A) Solid. 59. Group of elements whose ending e-configuration is p5. 7 electrons in outer level, easily gain electrons. A) Chalcogens. B) Noble gases. C) Halogens. D) Nitrogen Group. Show Answer Correct Answer: C) Halogens. 60. The $ atomic\ no.$ of an element is $ 19$ and its $ mass\ no.$ is $ 39$ . What is the no. of $ neutrons$? A) 20. B) 19. C) 58. D) 39. Show Answer Correct Answer: A) 20. ← PreviousNext →Related QuizzesChemistry QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books