Chemistry in Everyday Life
Q. What is the main active ingredient in most antacids?
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A.
Calcium carbonate
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B.
Magnesium hydroxide
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C.
Aluminum hydroxide
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D.
All of the above
Solution
Most antacids contain a combination of calcium carbonate, magnesium hydroxide, and aluminum hydroxide to neutralize stomach acid.
Correct Answer: D — All of the above
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Q. What is the main component of vinegar?
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A.
Acetic acid
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B.
Citric acid
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C.
Lactic acid
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D.
Formic acid
Solution
Vinegar primarily consists of acetic acid, which gives it its sour taste.
Correct Answer: A — Acetic acid
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Q. What is the main ingredient in most sunscreens?
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A.
Zinc oxide
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B.
Vitamin E
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C.
Aloe vera
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D.
Coconut oil
Solution
Zinc oxide is a common active ingredient in sunscreens that protects against UV rays.
Correct Answer: A — Zinc oxide
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Q. What is the main ingredient in vinegar that gives it its sour taste?
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A.
Acetic acid
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B.
Citric acid
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C.
Lactic acid
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D.
Formic acid
Solution
Vinegar contains acetic acid, which is responsible for its sour taste.
Correct Answer: A — Acetic acid
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Q. What is the main ingredient in vinegar?
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A.
Acetic acid
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B.
Citric acid
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C.
Lactic acid
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D.
Formic acid
Solution
Vinegar primarily consists of acetic acid, which gives it its sour taste.
Correct Answer: A — Acetic acid
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Q. What is the main purpose of emulsifiers in food products?
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A.
Thicken
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B.
Stabilize mixtures
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C.
Add flavor
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D.
Preserve freshness
Solution
Emulsifiers stabilize mixtures of oil and water, preventing separation in food products.
Correct Answer: B — Stabilize mixtures
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Q. What is the main purpose of using antioxidants in food?
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A.
Enhance color
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B.
Prevent oxidation
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C.
Improve taste
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D.
Increase shelf life
Solution
Antioxidants are used to prevent oxidation, which can lead to spoilage and loss of quality.
Correct Answer: B — Prevent oxidation
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Q. What is the main purpose of using baking soda in cooking?
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A.
Flavoring
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B.
Leavening
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C.
Preserving
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D.
Coloring
Solution
Baking soda acts as a leavening agent, helping baked goods to rise.
Correct Answer: B — Leavening
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Q. What is the primary active ingredient in most antacids?
-
A.
Calcium carbonate
-
B.
Magnesium hydroxide
-
C.
Aluminum hydroxide
-
D.
All of the above
Solution
Most antacids contain active ingredients like calcium carbonate, magnesium hydroxide, or aluminum hydroxide to neutralize stomach acid.
Correct Answer: D — All of the above
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Q. What is the primary function of antacids?
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A.
To relieve pain
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B.
To reduce acidity
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C.
To increase appetite
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D.
To promote digestion
Solution
Antacids are used to neutralize stomach acidity and relieve heartburn.
Correct Answer: B — To reduce acidity
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Q. What is the primary function of baking soda in cooking?
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A.
Thickening agent
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B.
Leavening agent
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C.
Flavor enhancer
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D.
Preservative
Solution
Baking soda acts as a leavening agent, helping baked goods rise by producing carbon dioxide when reacting with acids.
Correct Answer: B — Leavening agent
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Q. What is the primary function of emulsifiers in food products?
-
A.
Thickeners
-
B.
Stabilizers
-
C.
Flavor enhancers
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D.
Coloring agents
Solution
Emulsifiers help stabilize mixtures of oil and water, preventing separation.
Correct Answer: B — Stabilizers
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Q. What is the primary function of fluoride in dental care products?
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A.
Whitening teeth
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B.
Preventing cavities
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C.
Freshening breath
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D.
Strengthening gums
Solution
Fluoride helps to prevent cavities by strengthening tooth enamel and making it more resistant to decay.
Correct Answer: B — Preventing cavities
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Q. What is the primary function of fluoride in dental care?
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A.
Whitening teeth
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B.
Preventing cavities
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C.
Strengthening enamel
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D.
Reducing sensitivity
Solution
Fluoride helps to strengthen tooth enamel and prevent cavities.
Correct Answer: C — Strengthening enamel
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Q. What is the primary function of preservatives in food?
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A.
Enhance flavor
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B.
Improve texture
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C.
Prevent spoilage
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D.
Increase nutritional value
Solution
Preservatives are added to food to prevent spoilage caused by microorganisms.
Correct Answer: C — Prevent spoilage
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Q. What is the primary function of soap in cleaning?
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A.
Disinfecting
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B.
Emulsifying
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C.
Oxidizing
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D.
Reducing
Solution
Soap acts as an emulsifier, allowing water to mix with oils and dirt for effective cleaning.
Correct Answer: B — Emulsifying
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Q. What is the primary use of antihistamines?
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A.
To treat infections
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B.
To relieve allergy symptoms
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C.
To reduce fever
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D.
To promote sleep
Solution
Antihistamines are primarily used to relieve symptoms of allergies.
Correct Answer: B — To relieve allergy symptoms
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Q. What is the primary use of baking soda in cooking?
-
A.
Flavor enhancer
-
B.
Leavening agent
-
C.
Preservative
-
D.
Coloring agent
Solution
Baking soda acts as a leavening agent, helping baked goods rise by producing carbon dioxide when reacting with acids.
Correct Answer: B — Leavening agent
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Q. What is the primary use of citric acid in food?
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A.
Preservative
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B.
Flavor enhancer
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C.
Thickener
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D.
Coloring agent
Solution
Citric acid is commonly used as a flavor enhancer in food products.
Correct Answer: B — Flavor enhancer
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Q. What is the primary use of sodium bicarbonate in households?
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A.
Cleaning agent
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B.
Food preservative
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C.
Antacid
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D.
All of the above
Solution
Sodium bicarbonate is used for cleaning, as a food preservative, and as an antacid.
Correct Answer: D — All of the above
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Q. What is the role of antioxidants in food?
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A.
Enhancing flavor
-
B.
Preventing spoilage
-
C.
Reducing oxidation
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D.
Increasing acidity
Solution
Antioxidants prevent oxidation, which can spoil food and reduce its nutritional value.
Correct Answer: C — Reducing oxidation
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Q. What is the role of caffeine in coffee?
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A.
Antioxidant
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B.
Stimulant
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C.
Sedative
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D.
Digestive aid
Solution
Caffeine acts as a stimulant, increasing alertness and reducing fatigue.
Correct Answer: B — Stimulant
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Q. What is the role of emulsifiers in food products?
-
A.
Thickeners
-
B.
Stabilizers
-
C.
Flavor enhancers
-
D.
Coloring agents
Solution
Emulsifiers help to stabilize mixtures of oil and water in food products.
Correct Answer: B — Stabilizers
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Q. What is the role of histamines in the body?
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A.
To promote sleep
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B.
To regulate blood sugar
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C.
To trigger allergic reactions
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D.
To enhance digestion
Solution
Histamines are chemicals that play a key role in allergic reactions.
Correct Answer: C — To trigger allergic reactions
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Q. Which chemical is commonly used as a food preservative?
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A.
Sodium chloride
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B.
Sodium benzoate
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C.
Vinegar
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D.
Sugar
Solution
Sodium benzoate is a widely used food preservative that inhibits the growth of bacteria and fungi.
Correct Answer: B — Sodium benzoate
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Q. Which compound is commonly used as a preservative in food?
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A.
Sodium chloride
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B.
Sodium benzoate
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C.
Potassium nitrate
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D.
Calcium carbonate
Solution
Sodium benzoate is widely used as a food preservative to prevent spoilage.
Correct Answer: B — Sodium benzoate
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Q. Which of the following compounds is commonly used as a food preservative?
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A.
Sodium chloride
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B.
Sodium benzoate
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C.
Calcium carbonate
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D.
Potassium nitrate
Solution
Sodium benzoate is widely used as a food preservative to inhibit the growth of bacteria and fungi.
Correct Answer: B — Sodium benzoate
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Q. Which of the following compounds is commonly used as a preservative in food?
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A.
Sodium chloride
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B.
Sodium benzoate
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C.
Potassium nitrate
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D.
Calcium carbonate
Solution
Sodium benzoate is widely used as a food preservative to prevent spoilage.
Correct Answer: B — Sodium benzoate
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Q. Which of the following compounds is commonly used as a sweetener?
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A.
Aspartame
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B.
Sodium bicarbonate
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C.
Citric acid
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D.
Sodium chloride
Solution
Aspartame is a widely used artificial sweetener found in many low-calorie foods and beverages.
Correct Answer: A — Aspartame
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Q. Which of the following compounds is used as a flavoring agent in food?
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A.
Vanillin
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B.
Acetic acid
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C.
Sodium chloride
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D.
Citric acid
Solution
Vanillin is the primary component of the extract of the vanilla bean and is used as a flavoring agent.
Correct Answer: A — Vanillin
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