MCQ in General Chemistry Part 2 | ECE Board Exam

This is the Multiple Choice Questions Part 2 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.

Continue Practice Exam Test Questions Part 2 of the Series

⇐ MCQ in General Chemistry Part 1 | ECE Board Exam

Choose the letter of the best answer in each question.

51. What is the charge of a proton in coulombs?

A. + 1.70217733 x 10^-19

B. + 1.60217733 x 10^-19

C. + 1.50217733 x 10^-19

D. + 1.40217733 x 10^-19

52. What is the charge of a proton in charge unit?

A. 0

B. 1 +

C. 1 –

D. 0 –

53. What is the mass of an electron in gram?

A. 10203 x 10^-23

B. 8.218290 x 10^-25

C. 1.672623 x 10^-24

D. 9.109387 x 10^-28

54. What is the mass of an electron in amu?

A. 2.490210 x 10^-4

B. 3.890140 x 10^-4

C. 1.007276 x 10^-4

D. 5.485799 x 10^-4

55. What is the mass of a proton in gram?

A. 2.490210 x 10^-24

B. 3.890140 x 10^-24

C. 1.007276 x 10^-24

D. 5.485799 x 10^-24

56. What is the mass of a proton in amu?

A. 1.0052981

B. 1.0072765

C. 1.0086600

D. 1.0066241

57. What is the mass of a neutron in grams?

A. 1.47495 x 10^24

B. 1.37495 x 10^-24

C. 1.67495 x 10^-24

D. 1.77495 x 10^-24

58. What is the mass of a neutron in amu?

A. 1.00866

B. 1.00521

C. 1.00324

D. 1.00000

59. The protons and neutrons are not considered are fundamental particles because they consist of a smaller particles called__________.

A. bosons

B. quarks

C. leptons

D. fermions

60. The atomic number of an element is:

A. the sum of number of protons and electrons

B. the number of protons in the nucleus

C. the number of electrons

D. the sum of the number of protons and neutrons in the nucleus

61. Atoms of the same element which have different masses are called _______.

A. molecules

B. ions

C. nuclides

D. isotopes

62. What is an atom specific isotope called?

A. Nuclide

B. Ion

C. Molecule

D. Fermion

63. The number of _______ in an atom defines what element the atom is.

A. neutron

B. electrons

C. protons

D. protons and electrons

64. The number of __________ in an atom defines the isotopes of an element.

A. neutrons

B. protons

C. electrons

D. protons and neutrons

65. If electrons are removed from or added to a neutral atom, a charged particle of the same element, called _______ is formed.

A. ion

B. cation

C. anion

D. isotope

66. A negatively charged ion which results when an electron is added to an atom called _____.

A. Boson

B. Fermion

C. Cation

D. Anion

67. A positively charged ion which results when an electron is removed from an atom is called ____.

A. Anion

B. Cation

C. Fermion

D. Lepton

68. What is “density number” of an atom?

A. Atomic number

B. Mass number

C. Atomic mass

D. Atomic weight

69. The _______ of an atom is the sum of the number of protons and neutrons in the nucleus of an atom.

A. mass number

B. atomic weight

C. atomic mass

D. atomic number

70. “When the elements are arranged in the order of increasing atomic number, elements with similar properties appear at periodic intervals.” This statement is known as _________.

A. Law of multiple proportion

B. Law of definite proportion

C. The periodic law

D. Dalton’s atomic theory

71. Who are the two chemists credited for the discovery of the periodic law?

A. Julius Lothar Meyer and DemitriIvanovich Mendeleev

B. Humphrey Davy and Henri Becquerel

C. Henri Becquerel and Ernest Rutherford

D. Ernest Rutherforn and Julius Lothar Meyer

72. The elements with similar properties are placed in columns of the periodic table. These columns are commonly called _____.

A. Periods

B. Groups

C. Families

D. Groups or families

73. What are the rows in the periodic table called?

A. Periods

B. Transitions

C. Groups

D. Families

74. Elements in Gropu1A in the periodic table are ______.

A. Boron group

B. Alkaline earth metals

C. Alkali metals

D. Carbon group

75. Elements in Group IIA in the periodic table are _____.

A. Halogens

B. Alkaline earth metals

C. Alkali metals

D. Nitrogen group

76. The boron group is what group in the periodic table?

A. Group III A

B. Group IV A

C. Group V A

D. Group VI A

77. What group in the periodic table is the carbon group?

A. Group III A

B. Group IV A

C. Group V A

D. Group VI A

78. What group in the periodic table is the nitrogen group?

A. Group V A

B. Group VI A

C. Group VII A

D. Group IV A

79. The chalcogens are elements in what group in the periodic table?

A. Group V A

B. Group VI A

C. Group VII A

D. Group IV A

80. Halogens belong to what group in the periodic table?

A. Group IV A

B. Group V A

C. Group VI A

D. Group VII A

81. The elements, germanium and silicon, which are commonly use for semiconductors belongs what group of elements?

A. Boron group

B. Carbon group

C. Nitrogen group

D. Halogens

82. What group in the periodic table are the noble gases?

A. Group 0

B. Group VIII A

C. Group VII A

D. Group 0 or VIII A

83. Which of the following is NOT a noble gas?

A. Argon

B. Xenon

C. Radon

D. Antimony

84. What is the atomic number for oxygen?

A. 6

B. 7

C. 8

D. 9

85. What is the atomic number of germanium?

A. 14

B. 32

C. 18

D. 23

86. What is the atomic number of carbon?

A. 6

B. 7

C. 8

D. 10

87. Which alkaline earth metal has the smallest atomic number?

A. Beryllium

B. Magnesium

C. Calcium

D. Barium

88. Which noble gas has the smallest atomic number?

A. Argon

B. Krypton

C. Neon

D. Helium

89. What is the most abundant element in terms of the number of atoms?

A. Hydrogen

B. Helium

C. Oxygen

D. Nitrogen

90. What is the most abundant element in the human body?

A. Carbon

B. Hydrogen

C. Oxygen

D. Calcium

91. What is the second most abundant element in the human body?

A. Carbon

B. Hydrogen

C. Oxygen

D. Nitrogen

92. Which of the following is NOT a metalloid?

A. Antimony

B. Boron

C. Magnesium

D. Silicon

93. Caustic soda is used in making soap, textiles and paper. What is another term for caustic soda?

A. Sodium benzoate

B. Sodium hydroxide

C. Potassium chlorate

D. Cesium bromide

94. What is used for the manufacture of explosives and fireworks?

A. Magnesium hydroxide

B. Potassium chlorate

C. Potassium perchlorate

D. Cesium bromide

95. All alkaline metals will tarnish in air except ________.

A. Magnesium

B. Barium

C. Radium

D. Beryllium

96. What alkali metal is usually used for x-ray apparatus because of its ability to allow x-rays to pass though with minimum absorption?

A. Magnesium

B. Radium

C. Beryllium

D. Barium

97. What element is used as a coating for iron to make galvanized iron a corrosion-resistant material?

A. Magnesium

B. Titanium

C. Zinc

D. Chromium

98. What element is used as electric power source for pacemakers artifact hearts?

A. Promethium

B. Neodymium

C. Uranium

D. Plutonium

99. What element is commonly used in making lasers?

A. Chromium

B. Neodymium

C. Promethium

D. Terbium

100. What is regarded as the most unique element in the periodic table?

A. Hydrogen

B. Oxygen

C. Carbon

D. Uranium

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