MCQ in General Chemistry Part 1 _ ECE Board Exam - Pinoybix Engineering.pdf

1 MCQ in General Chemistry Part 1 | ECE Board Exam | This is the Multiples Choice Questions Part 1 of the Series in General Chemistry as one of the General Engineering and Applied Sciences (GEAS) topics. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize yourself wi...

1 MCQ in General Chemistry Part 1 | ECE Board Exam | This is the Multiples Choice Questions Part 1 of the Series in General Chemistry as one of the General Engineering and Applied Sciences (GEAS) topics. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize yourself with each and every question compiled here taken from various sources including past Board Questions in General Engineering and Applied Sciences (GEAS) field. Start Practice Exam Test Questions Part 1 of the Series Choose the letter of the best answer in each question. 1. What are found in the nucleus of an atom? A. Electrons and Protons B. Protons and Neutrons C. Cations and Anions D. Electrons and Neutrons View Answer: Answer: Option B Explanation: 2. What is the negatively charged particle of an atom? A. Electrons B. Protons C. Neutron D. Molecule View Answer: Answer: Option A Explanation: 3. What is the positively charged particle of an atom? A. Electrons B. Protons C. Neutron D. Molecule View Answer: Answer: Option B Explanation: 4. What is the particle of an atom that has no electrical charge? A. Electrons B. Protons C. Neutron D. Molecule View Answer: Answer: Option C Explanation: 5. The word “atom” comes from Greek “Atomos” which means what? A. Extremely Small B. Invisible C. Indivisible D. Microscopic View Answer: Answer: Option C Explanation: 6. Who was the first person to propose that atoms have weights? A. Ernest Rutherford B. Democritus C. John Dalton D. Joseph John Thomson View Answer: Answer: Option C Explanation: 7. Who discovered the electron? A. Joseph John Thomson B. John Dalton C. Humphrey Davy D. Ernest Rutherford View Answer: Answer: Option A Explanation: 8. Who discovered the proton? A. Eugene Goldstein B. Pierre Curie C. Ernest Rutherford D. Michael Faraday View Answer: Answer: Option C Explanation: 9. Who discovered the neutron? A. James Chadwick B. Eugene Goldstein C. Niels Bohr D. Julius Lothar Meyer View Answer: Answer: Option A Explanation: 10. What is anything that occupies space and has mass? A. Element B. Ion C. Matter D. Molecule View Answer: Answer: Option C Explanation: 11. All forms of matter are composed of the same building blocks called______. A. molecules B. atom C. elements D. ions View Answer: Answer: Option B Explanation: 12. How are substances classified? A. Elements or Compounds B. Metals or Non-metals C. Acids or Bases D. Homogeneous or Heterogeneous View Answer: Answer: Option A Explanation: 13. What is a substance that cannot be broken down into simpler substances? A. Ion B. Atom C. Molecule D. Element View Answer: Answer: Option D Explanation: 14. What is the result from the combination, in definite proportion of mass, of two or more elements? A. Mixture B. Compound C. Substance D. Chemical Reaction View Answer: Answer: Option B Explanation: 15. How are mixtures classified? A. Elements or Compounds B. Metals, Nonmetals or Metalloids C. Homogeneous or Heterogeneous D. Suspension, Colloids or Solutions View Answer: Answer: Option D Explanation: 16. The mixture of soil and water is an example of what classification of a mixture? A. Homogeneous B. Suspension C. Colloid D. Solution View Answer: Answer: Option B Explanation: 17. A very fine particle of soil when mixed to water will form a cloudy mixture. How is this mixture classified? A. Colloid B. Suspension C. Solution D. Compound View Answer: Answer: Option A Explanation: 18. The particles of sugar dispersed in water are so small that a clear homogeneous mixture. What is this homogeneous mixture called? A. Colloid B. Compound C. Suspension D. Solution View Answer: Answer: Option D Explanation: 19. How are elements classified? A. Metals, Nonmetals or Metalloids B. Homogeneous or Heterogeneous C. Suspension, Colloid, Solution D. Quarks, Solids or Liquids View Answer: Answer: Option A Explanation: 20. What are the three states of matter? A. Solid, Liquid and Gas B. Metals, Nonmetals and Metalloids C. Suspension, Colloid and Solution D. Quarks, Photons and Quasar View Answer: Answer: Option A Explanation: 21. Compounds are mostly classified as: A. Homogeneous and Heterogeneous B. Acids and Bases C. Gases, Liquids and Solids D. Metals and Nonmetals View Answer: Answer: Option B Explanation: 22. What is the property of metals that allow them to be rolled without breaking? A. Ductility B. Malleability C. Luster D. Elasticity View Answer: Answer: Option B Explanation: 23. What is the property of metals that reflects the light that strikes their surfaces, making them appear shiny? A. Malleability B. Ductility C. Luster D. Plasticity View Answer: Answer: Option C Explanation: 24. Which of the following is NOT a property of metals? A. Metals are neither malleable nor ductile. B. Metals have high thermal conductivity. C. Metals have high electrical conductivity. D. Metals have more luster. View Answer: Answer: Option A Explanation: 25. What are elements that have properties intermediate between metals and nonmetals? A. Gases B. Solids C. Liquids D. Metalloids View Answer: Answer: Option D Explanation: 26. Which of the following is NOT a property of acids? A. Taste sour B. Feel slippery on the skin C. Turn litmus paper to red D. Dissolve metals producing various salts and hydrogen gas View Answer: Answer: Option B Explanation: 27. Which of the following is NOT a property of bases? A. Feel slippery on the skin B. Turn litmus paper to blue C. Taste bitter D. Dissolve metals producing various salts and hydrogen gas View Answer: Answer: Option D Explanation: 28. An acid can react with base to produce a __________. A. hydrogen gas B. salt C. oxide D. hydroxide View Answer: Answer: Option B Explanation: 29. Vinegar is a solution of water and what kind of acid? A. Phosphoric acid B. Sulfuric acid C. Nitric acid D. Acetic acid View Answer: Answer: Option D Explanation: 30. What acid is added to carbonated drinks to produce a tart test? A. Citric acid B. Phosphoric acid C. Sulfuric acid D. Nitric acid View Answer: Answer: Option B Explanation: 31. Table salt or sodium chloride may be formed by the reaction of: A. Hydrochloric acid and sodium bicarbonate B. Sodium and chlorine C. Hydrochloric acid and sodium carbonate D. Hydrochloric acid and sodium hydroxide View Answer: Answer: Option D Explanation: 32. What occurs when a substance is transformed into another substance with a totally different composition and properties? A. Physical change B. Chemical change C. Catalyst D. Chemical reaction View Answer: Answer: Option B Explanation: 33. What occurs when a substance changes it appearance without changing its composition? A. Chemical reaction B. Chemical change C. Physical change D. Catalyst View Answer: Answer: Option C Explanation: 34. What is another term for “chemical change”? A. Chemical reaction B. Phase change C. State change D. Composition change View Answer: Answer: Option A Explanation: 35. A material is said to be ______ if its composition and properties are uniform throughout. A. homogeneous B. heterogeneous C. pure substance D. pure compound View Answer: Answer: Option A Explanation: 36. A material is said to be ______ if its composition and properties are not uniform throughout. A. Un-pure B. homogeneous C. heterogeneous D. malicable View Answer: Answer: Option C Explanation: 37. The properties of a material that changes when the amount of substance changes are called _______ properties. A. intensive B. extensive C. physical D. chemical View Answer: Answer: Option B Explanation: 38. The properties of a material that do not change when the amount of substance changes are called _______ properties. A. intensive B. extensive C. chemical D. physical View Answer: Answer: Option A Explanation: 39. Which of the following is NOT an intensive property of a material? A. Color B. Surface area C. Melting point D. Taste View Answer: Answer: Option B Explanation: 40. Which of the following is NOT an extensive property of a material? A. Length B. Volume C. Density D. Weight View Answer: Answer: Option C Explanation: 41. “When two or more elements form more than one compound, the ratio of the masses of one element that combine with a given mass of another element in the different compounds is the ratio of small whole numbers.” This statement is known as: A. Graham’ Law of diffusion B. The uncertainty principle C. Law of definite proportion D. Law of multiple proportion View Answer: Answer: Option D Explanation: 42. “The masses of elements in a pure compound are always in the same proportion.” This statement is known as ________. A. Law of multiple proportion B. Law of definite proportion C. The periodic law D. Dalton’s atomic theory View Answer: Answer: Option B Explanation: 43. Who formulated the atomic theory? A. John Dalton B. Humphrey Davy C. Henri Becquerel D. Ernest Rutherford View Answer: Answer: Option A Explanation: 44. Who revised the atomic theory by replacing the hard, indestructible spheres imagined by Dalton and proposed the “raisin bread model” of the atom? A. Pierre Curie B. Robert Andrews Millikan C. Joseph John Thomson D. Humphrey Davy View Answer: Answer: Option C Explanation: 45. How does Joseph John Thomson call his model of the atom? A. Orbital model B. Planetary model C. Radioactive model D. Plum-pudding model View Answer: Answer: Option D Explanation: 46. The discovery of radioactivity further confirms the existence of subatomic particles. Who discovered radioactivity? A. Henri Becquerel B. Marie Curie C. Pierre Curie D. Niels Bohr View Answer: Answer: Option A Explanation: 47. What is the common unit used to indicate the mass of a particle? A. Atomic mass unit (amu) B. Charge unit C. Coulomb D. Gram View Answer: Answer: Option A Explanation: 48. What is the unit for a charge of a particle? A. Coulomb B. Charge unit C. Atomic mass unit D. Lepton View Answer: Answer: Option B Explanation: 49. What is the charge of an electron in coulomb? A. -1.70217733 x 10^-19 B. -1.60217733 x 10^-19 C. -1.50217733 x 10^-19 D. -1.40217733 x 10^-19 View Answer: Answer: Option B Explanation: 50. What is the charge of an electron in charge unit? A. 0 B. 1 + C. 1 – D. 0 – View Answer: Answer: Option C Explanation: NEXT: MCQ in General Chemistry Part 2 | ECE Board Exam Latest MCQ in General Chemistry Series Complete List of MCQs in General Engineering and Applied Science per topic Series of MCQ in General Engineering and Applied Science