Which gas is known as the “Laughing Gas”?
A) Oxygen
B) Nitrogen
C) Helium
D) Nitrous Oxide
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What is the chemical symbol for water?
A) Wo
B) Wa
C) H2O
D) Wo2
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Which planet is known as the “Red Planet”?
A) Mars
B) Jupiter
C) Venus
D) Saturn
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Which vitamin is known as the “Sunshine Vitamin”?
A) Vitamin A
B) Vitamin B
C) Vitamin C
D) Vitamin D
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Which metal is liquid at room temperature?
A) Aluminum
B) Mercury
C) Gold
D) Iron
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Which scientist discovered penicillin?
A) Marie Curie
B) Alexander Fleming
C) Isaac Newton
D) Albert Einstein
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Which gas is responsible for the smell of rotten eggs?
A) Hydrogen
B) Sulfur Dioxide
C) Oxygen
D) Carbon Dioxide
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What is the chemical symbol for sodium?
A) So
B) Na
C) Sa
D) No
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Which gas is essential for respiration?
A) Carbon Dioxide
B) Oxygen
C) Nitrogen
D) Hydrogen
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What is the chemical symbol for gold?
A) Au
B) Ag
C) Fe
D) Cu
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