MCQs in General Chemistry Part I

(Last Updated On: December 8, 2017)

MCQs in General Chemistry Part 1

This is the Multiples Choice Questions Part 1 of the Series in General chemistry as one of the General Engineering and Applied Sciences (GEAS) topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including past Board Questions in General Engineering and Applied Sciences (GEAS) field.

Online Questions and Answers in General Chemistry Series

Following is the list of multiple choice questions in this brand new series:

General Chemistry MCQs
PART 1: MCQs from Number 1 – 50                        Answer key: PART I
PART 2: MCQs from Number 51 – 100                   Answer key: PART II
PART 3: MCQs from Number 101 – 150                 Answer key: PART III
PART 4: MCQs from Number 151 – 200                 Answer key: PART IV
PART 5: MCQs from Number 201 – 250                 Answer key: PART V
PART 6: MCQs from Number 251 – 300                 Answer key: PART VI
PART 7: MCQs from Number 301 – 350                 Answer key: PART VII
PART 8: MCQs from Number 351 – 400                 Answer key: PART VIII
PART 9: MCQs from Number 401 – 450                 Answer key: PART IX
PART 10: MCQs from Number 451 – 500                 Answer key: PART X

Start Practice Exam Test Questions Part I of the Series

Choose the letter of the best answer in each questions.

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

2. What is the negatively charged particle of an atom?

  • A. Electrons
  • B. Protons
  • C. Neutron
  • D. Molecule

3. What is the positively charged particle of an atom?

  • A. Electrons
  • B. Protons
  • C. Neutron
  • D. Molecule

4. What is the particle of an atom that has no electrical charge?

  • A. Electrons
  • B. Protons
  • C. Neutron
  • D. Molecule

5. The word “atom” comes from Greek “Atomos” which means what?

  • A. Extremely Small
  • B. Invisible
  • C. Indivisible
  • D. Microscopic

6. Who was the first person to propose that atoms have weights?

  • A. Ernest Rutherford
  • B. Democritus
  • C. John Dalton
  • D. Joseph John Thomson

7. Who discovered the electron?

  • A. Joseph John Thomson
  • B. John Dalton
  • C. Humphrey Davy
  • D. Ernest Rutherford

8. Who discovered the proton?

  • A. Eugene Goldstein
  • B. Pierre Curie
  • C. Ernest Rutherford
  • D. Michael Faraday

9. Who discovered the neutron?

  • A. James Chadwick
  • B. Eugene Goldstein
  • C. Niels Bohr
  • D. Julius Lothar Meyer

10. What is anything that occupies space and has mass?

  • A. Element
  • B. Ion
  • C. Matter
  • D. Molecule

11. All forms of matter are composed of the same building blocks called______.

  • A. molecules
  • B. atom
  • C. elements
  • D. ions

12. How are substances classified?

  • A. Elements or Compounds
  • B. Metals or Non-metals
  • C. Acids or Bases
  • D. Homogeneous or Heterogeneous

13. What is a substance that cannot be broken down into simpler substances?

  • A. Ion
  • B. Atom
  • C. Molecule
  • D. Element

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

15. How are mixtures classified?

  • A. Elements or Compounds
  • B. Metals, Nonmetals or Metalloids
  • C. Homogeneous or Heterogeneous
  • D. Suspension, Colloids or Solutions

16. The mixture of soil and water is an example of what classification of a mixture?

  • A. Homogeneous
  • B. Suspension
  • C. Colloid
  • D. Solution

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

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

19. How are elements classified?

  • A. Metals, Nonmetals or Metalloids
  • B. Homogeneous or Heterogeneous
  • C. Suspension, Colloid, Solution
  • D. Quarks, Solids or Liquids

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

21. Compounds are mostly classified as:

  • A. Homogeneous and Heterogeneous
  • B. Acids and Bases
  • C. Gases, Liquids and Solids
  • D. Metals and Nonmetals

22. What is the property of metals that allow them to be rolled without breaking?

  • A. Ductility
  • B. Malleability
  • C. Luster
  • D. Elasticity

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

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.

25. What are elements that have properties intermediate between metals and nonmetals?

  • A. Gases
  • B. Solids
  • C. Liquids
  • D. Metalloids

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

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

28. An acid can react with base to produce a __________.

  • A. hydrogen gas
  • B. salt
  • C. oxide
  • D. hydroxide

29. Vinegar is a solution of water and what kind of acid?

  • A. Phosphoric acid
  • B. Sulfuric acid
  • C. Nitric acid
  • D. Acetic acid

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

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

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

33. What occurs when a substance changes it appearance without changing its composition?

  • A. Chemical reaction
  • B. Chemical change
  • C. Physical change
  • D. Catalyst

34. What is another term for “chemical change”?

  • A. Chemical reaction
  • B. Phase change
  • C. State change
  • D. Composition change

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

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

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

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

39. Which of the following is NOT an intensive property of a material?

  • A. Color
  • B. Surface area
  • C. Melting point
  • D. Taste

40. Which of the following is NOT an extensive property of a material?

  • A. Length
  • B. Volume
  • C. Density
  • D. Weight

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

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

43. Who formulated the atomic theory?

  • A. John Dalton
  • B. Humphrey Davy
  • C. Henri Becquerel
  • D. Ernest Rutherford

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

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

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

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

48. What is the unit for a charge of a particle?

  • A. Coulomb
  • B. Charge unit
  • C. Atomic mass unit
  • D. Lepton

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

50. What is the charge of an electron in charge unit?

  • A. 0
  • B. 1 +
  • C. 1 –
  • D. 0 –

Complete List of MCQs in General Engineering and Applied Science per topic

MCQs in General Chemistry Part I
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