Acids, Bases and Salts - Applications
Q. What is the function of phosphoric acid in soft drinks?
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A.
Sweetener
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B.
Preservative
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C.
Flavor enhancer
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D.
Acidulant
Solution
Phosphoric acid serves as an acidulant, providing a tangy flavor and balancing sweetness in soft drinks.
Correct Answer: D — Acidulant
Q. What is the primary application of sodium hydroxide in industry?
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A.
Paper production
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B.
Textile processing
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C.
Water treatment
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D.
All of the above
Solution
Sodium hydroxide is used in various industries, including paper production, textile processing, and water treatment.
Correct Answer: D — All of the above
Q. What is the primary use of acetic acid in the food industry?
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A.
Flavoring agent
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B.
Preservative
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C.
pH adjuster
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D.
All of the above
Solution
Acetic acid is used as a flavoring agent, preservative, and pH adjuster in various food products.
Correct Answer: D — All of the above
Q. What is the primary use of sodium bicarbonate in the food industry?
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A.
Preservative
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B.
Leavening agent
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C.
Flavor enhancer
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D.
Coloring agent
Solution
Sodium bicarbonate, or baking soda, is primarily used as a leavening agent in baking.
Correct Answer: B — Leavening agent
Q. What is the role of citric acid in food preservation?
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A.
Antioxidant
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B.
pH regulator
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C.
Flavor enhancer
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D.
Color stabilizer
Solution
Citric acid acts as a pH regulator, helping to preserve food by creating an acidic environment that inhibits microbial growth.
Correct Answer: B — pH regulator
Q. Which acid is used in the production of lead-acid batteries?
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A.
Sulfuric acid
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B.
Phosphoric acid
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C.
Nitric acid
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D.
Acetic acid
Solution
Sulfuric acid is the electrolyte used in lead-acid batteries.
Correct Answer: A — Sulfuric acid
Q. Which of the following acids is commonly used in the production of fertilizers?
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A.
Sulfuric acid
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B.
Hydrochloric acid
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C.
Nitric acid
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D.
Acetic acid
Solution
Nitric acid is widely used in the production of fertilizers, particularly ammonium nitrate.
Correct Answer: C — Nitric acid
Q. Which of the following bases is commonly used in the production of soap?
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A.
Sodium hydroxide
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B.
Potassium hydroxide
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C.
Calcium hydroxide
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D.
Ammonium hydroxide
Solution
Sodium hydroxide is commonly used in the saponification process to produce soap.
Correct Answer: A — Sodium hydroxide
Q. Which of the following is a common application of hydrochloric acid?
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A.
Cleaning metal surfaces
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B.
Food preservation
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C.
Water treatment
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D.
Beverage carbonation
Solution
Hydrochloric acid is commonly used for cleaning metal surfaces due to its ability to remove rust and scale.
Correct Answer: A — Cleaning metal surfaces
Q. Which of the following salts is commonly used as a de-icing agent on roads?
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A.
Sodium chloride
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B.
Calcium carbonate
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C.
Potassium nitrate
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D.
Magnesium sulfate
Solution
Sodium chloride is widely used as a de-icing agent due to its effectiveness in lowering the freezing point of water.
Correct Answer: A — Sodium chloride
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