Q1. What is the symbol for hydrogen?
a) Hg
b) He
c) H
d) Hy
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Correct Answer: c) H
Explanation: Hydrogen is represented by the symbol “H” in the periodic table. It is the lightest and most abundant chemical element, constituting roughly 75% of the elemental mass of the universe.
Q2. Which element’s symbol is “Na”?
a) Nitrogen
b) Neon
c) Nickel
d) Sodium
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Correct Answer: d) Sodium
Explanation: Sodium is represented by the symbol “Na” in the periodic table. It is a highly reactive metal that belongs to the alkali metal group.
Q3. What is the symbol for carbon?
a) Co
b) Cr
c) Ca
d) C
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Correct Answer: d) C
Explanation: Carbon is represented by the symbol “C” in the periodic table. It is a versatile element known for its ability to form a vast number of compounds, including the basis of life.
Q4. Which element’s symbol is “Ag”?
a) Gold
b) Silver
c) Silicon
d) Argon
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Correct Answer: b) Silver
Explanation: Silver is represented by the symbol “Ag” in the periodic table. It is a precious metal known for its lustrous appearance and various industrial applications.
Q5. What is the symbol for iron?
a) I
b) Fe
c) In
d) Ir
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Correct Answer: b) Fe
Explanation: Iron is represented by the symbol “Fe” in the periodic table. It is a crucial element for various biological processes and is widely used in construction and manufacturing.
Q6. Which element’s symbol is “Cu”?
a) Copper
b) Cobalt
c) Chromium
d) Calcium
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Correct Answer: a) Copper
Explanation: Copper is represented by the symbol “Cu” in the periodic table. It is a ductile metal with excellent electrical conductivity, commonly used in electrical wiring and plumbing.
Q7. What is the symbol for gold?
a) Go
b) G
c) Au
d) Ag
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Correct Answer: c) Au
Explanation: Gold is represented by the symbol “Au” in the periodic table. It is a highly sought-after precious metal renowned for its beauty and value.
Q8. Which element’s symbol is “O”?
a) Oxygen
b) Osmium
c) Ozone
d) Osmium
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Correct Answer: a) Oxygen
Explanation: Oxygen is represented by the symbol “O” in the periodic table. It is essential for respiration and the most abundant element in the Earth’s crust.
Q9. What is the symbol for potassium?
a) Kt
b) P
c) Po
d) K
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Correct Answer: d) K
Explanation: Potassium is represented by the symbol “K” in the periodic table. It is an alkali metal crucial for various biological processes, including nerve function and muscle contraction.
Q10. Which element’s symbol is “Cl”?
a) Chlorine
b) Carbon
c) Cobalt
d) Calcium
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Correct Answer: a) Chlorine
Explanation: Chlorine is represented by the symbol “Cl” in the periodic table. It is a highly reactive halogen gas widely used in disinfectants and water purification.