1. What is the primary acid found in vinegar?
a) Sulfuric acid
b) Hydrochloric acid
c) Acetic acid
d) Citric acid
Answer: c) Acetic acid
2. What common household item is a base that can be used to neutralize acids?
a) Lemon juice
b) Ammonia
c) Vinegar
d) Baking soda
Answer: d) Baking soda
3. What is the main ingredient in antacid tablets that helps to neutralize stomach acid?
a) Calcium carbonate
b) Magnesium sulfate
c) Sodium chloride
d) Citric acid
Answer: a) Calcium carbonate
4. Which of the following is a strong acid commonly used in cleaning products?
a) Hydrochloric acid
b) Acetic acid
c) Citric acid
d) Lactic acid
Answer: a) Hydrochloric acid
5. What is the pH range of most household soaps and detergents?
a) 0-4
b) 5-7
c) 7-10
d) 11-14
Answer: d) 11-14
6. Which of the following is an example of a neutral substance?
a) Lemon juice
b) Baking soda
c) Salt
d) Ammonia
Answer: c) Salt
7. What happens when lemon juice (an acid) is mixed with baking soda (a base)?
a) A red color change occurs
b) A blue color change occurs
c) Carbon dioxide gas is released
d) A precipitate forms
Answer: c) Carbon dioxide gas is released
8. What is the main component of table salt?
a) Sodium chloride
b) Potassium chloride
c) Magnesium sulfate
d) Calcium carbonate
Answer: a) Sodium chloride
9. Which household product is an example of a weak acid used for flavoring and preservation?
a) Lemon juice
b) Hydrochloric acid
c) Sulfuric acid
d) Ammonia
Answer: a) Lemon juice
10. What is the purpose of adding lime (calcium hydroxide) to soil in agriculture?
a) To increase soil acidity
b) To decrease soil acidity
c) To provide nutrients
d) To enhance soil texture
Answer: b) To decrease soil acidity
11. What does a pH indicator like litmus paper measure?
a) The density of a solution
b) The temperature of a solution
c) The acidity or basicity of a solution
d) The color of a solution
Answer: c) The acidity or basicity of a solution
12. Which substance is commonly used in swimming pools to maintain proper pH levels?
a) Chlorine
b) Sodium bicarbonate
c) Sulfuric acid
d) Hydrochloric acid
Answer: b) Sodium bicarbonate
13. What is a common base found in cleaning products that helps dissolve grease?
a) Sodium hydroxide
b) Hydrochloric acid
c) Acetic acid
d) Citric acid
Answer: a) Sodium hydroxide
14. What is the main ingredient in most window cleaning solutions?
a) Sodium chloride
b) Acetic acid
c) Ammonia
d) Calcium carbonate
Answer: c) Ammonia
15. Which of the following is a natural source of acids used in cooking and food preservation?
a) Tomatoes
b) Salt
c) Baking powder
d) Sugar
Answer: a) Tomatoes