Q1: Which gas do humans exhale as a waste product?
- A) Oxygen
- B) Nitrogen
- C) Carbon Dioxide
- D) Hydrogen
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Q2: What is the chemical formula for table salt?
- A) NaCl
- B) KCl
- C) CaCl₂
- D) MgCl₂
Q3: Which city hosted the 2012 Summer Olympics?
- A) Beijing
- B) London
- C) Rio de Janeiro
- D) Tokyo
How well do you think you did? Check your answers below
Answers
Q1: Carbon Dioxide
Q2: NaCl
Q3: London