Chemistry Objective

1.What is the chemical symbol for gold?

• Au
• Ag
• Cu
• Fe

Ans Au

2.Which gas is responsible for the greenhouse effect?

• Carbon dioxide
• Oxygen
• Nitrogen
• Methane

Ans Carbon dioxide

3.What is the atomic number of hydrogen?

• 1
• 2
• 3
• 4

Ans 1

4.Which acid is found in lemons?

• Citric acid
• Acetic acid
• Sulfuric acid
• Hydrochloric acid

Ans Citric acid

5.What is the chemical formula for water?

• H2O
• CO2
• O2
• CH4

Ans H2O

6.Which element is the main component of the Earth's atmosphere?

• Nitrogen
• Oxygen
• Carbon
• Hydrogen

Ans Nitrogen

7.What is the pH of a neutral solution?

• 7
• 1
• 14
• 0

Ans 7

8.Which gas is produced during photosynthesis?

• Oxygen
• Carbon dioxide
• Hydrogen
• Nitrogen

Ans Oxygen

9.What is the chemical formula for methane?

• CH4
• CO2
• H2O
• O2

Ans Oxygen

10.What is the chemical name for baking soda?

• Sodium bicarbonate
• Calcium carbonate
• Potassium bicarbonate
• Sodium chloride

Ans Sodium bicarbonate