Unit 1: Fundamentals of Chemistry

91. What is the main component of rust?

A) Iron Oxide
B) Copper Oxide
C) Aluminum Oxide
D) Zinc Oxide
Answer: A) Iron Oxide

92. Which of the following elements is a noble gas?

A) Helium
B) Chlorine
C) Nitrogen
D) Oxygen
Answer: A) Helium

93. Which of the following is a diatomic molecule?

A) O2
B) H2O
C) CO2
D) CH4
Answer: A) O2

94. What is the chemical symbol for silver?

A) Ag
B) Au
C) Pb
D) Pt
Answer: A) Ag

95. Which of the following is a characteristic of acids?

A) Taste sour
B) Feel slippery
C) Turn red litmus paper blue
D) Are non-corrosive
Answer: A) Taste sour

96. Which of the following is a metal?

A) Sulfur
B) Oxygen
C) Carbon
D) Copper
Answer: D) Copper

97. What is the process of solid turning directly into gas called?

A) Melting
B) Freezing
C) Condensation
D) Sublimation
Answer: D) Sublimation

98. What is the electron configuration of Sodium (Na)?

A) 1s2 2s2 2p6 3s1
B) 1s2 2s2 2p6
C) 1s2 2s2 2p6 3s2
D) 1s2 2s2 2p5
Answer: A) 1s2 2s2 2p6 3s1

99. What is the main component of table sugar?

A) Glucose
B) Fructose
C) Sucrose
D) Lactose
Answer: C) Sucrose

100. What is the boiling point of water at sea level?

A) 100°C
B) 0°C
C) 50°C
D) 150°C
Answer: A) 100°C