Q.1 Which of the following is used as an antiseptic for minor cuts and wounds?
Sodium bicarbonate
Potassium permanganate
Iodine solution
Sodium chloride
Explanation - Iodine solution is commonly used as an antiseptic to prevent infection in minor cuts and wounds.
Correct answer is: Iodine solution
Q.2 Which of the following is used in toothpaste to prevent dental caries?
Sodium fluoride
Calcium carbonate
Magnesium hydroxide
Potassium chloride
Explanation - Sodium fluoride helps in strengthening enamel and preventing dental caries.
Correct answer is: Sodium fluoride
Q.3 Which chemical is commonly used in antacids to neutralize stomach acid?
Sodium hydroxide
Magnesium hydroxide
Sulfuric acid
Hydrochloric acid
Explanation - Magnesium hydroxide reacts with excess stomach acid to relieve acidity.
Correct answer is: Magnesium hydroxide
Q.4 Which of the following is an ingredient in most cold creams?
Glycerin
Ammonium chloride
Sodium carbonate
Calcium oxide
Explanation - Glycerin is used as a moisturizer in cold creams due to its humectant properties.
Correct answer is: Glycerin
Q.5 Which chemical is used in the preparation of baking powder?
Sodium bicarbonate
Sodium hydroxide
Potassium permanganate
Calcium carbonate
Explanation - Sodium bicarbonate reacts with an acid to release carbon dioxide, which helps dough rise.
Correct answer is: Sodium bicarbonate
Q.6 Which of the following is used in the treatment of burns?
Sodium chloride solution
Boric acid
Silver nitrate solution
Hydrogen peroxide
Explanation - Silver nitrate is applied to burns for its antimicrobial properties to prevent infection.
Correct answer is: Silver nitrate solution
Q.7 Which of the following chemicals is used in face washes and soaps for its antiseptic properties?
Phenol
Sodium chloride
Calcium carbonate
Hydrochloric acid
Explanation - Phenol and its derivatives are used for their antiseptic properties in soaps and face washes.
Correct answer is: Phenol
Q.8 Which of the following is used in antiperspirants to reduce sweating?
Aluminium hydroxide
Calcium carbonate
Sodium bicarbonate
Potassium permanganate
Explanation - Aluminium hydroxide forms a temporary plug in sweat glands, reducing perspiration.
Correct answer is: Aluminium hydroxide
Q.9 Which chemical is commonly used as a food preservative?
Sodium benzoate
Sodium hydroxide
Potassium permanganate
Calcium oxide
Explanation - Sodium benzoate inhibits the growth of bacteria, yeast, and fungi in foods.
Correct answer is: Sodium benzoate
Q.10 Which compound is used in soft drinks to provide fizz?
Sodium bicarbonate
Carbon dioxide
Hydrogen peroxide
Sodium chloride
Explanation - Carbon dioxide gas is dissolved under pressure in soft drinks to give them effervescence.
Correct answer is: Carbon dioxide
Q.11 Which chemical is used in sunscreen lotions to block UV rays?
Zinc oxide
Sodium hydroxide
Potassium permanganate
Calcium chloride
Explanation - Zinc oxide acts as a physical barrier to ultraviolet radiation in sunscreen formulations.
Correct answer is: Zinc oxide
Q.12 Which chemical is commonly used in soaps to soften water?
Sodium carbonate
Calcium carbonate
Potassium hydroxide
Sodium chloride
Explanation - Sodium carbonate (washing soda) reacts with calcium and magnesium ions to soften hard water.
Correct answer is: Sodium carbonate
Q.13 Which of the following is used as a disinfectant in swimming pools?
Chlorine
Sodium chloride
Magnesium hydroxide
Sodium bicarbonate
Explanation - Chlorine kills bacteria and other microorganisms, keeping swimming pool water safe.
Correct answer is: Chlorine
Q.14 Which of the following compounds is used in the treatment of water to remove hardness?
Calcium hydroxide
Sodium hydroxide
Magnesium sulfate
Hydrochloric acid
Explanation - Calcium hydroxide reacts with temporary hardness (Ca(HCO3)2) to remove it from water.
Correct answer is: Calcium hydroxide
Q.15 Which chemical is used in antacids as an active ingredient to relieve acidity?
Aluminium hydroxide
Sodium hydroxide
Calcium oxide
Potassium permanganate
Explanation - Aluminium hydroxide neutralizes excess stomach acid and acts as an antacid.
Correct answer is: Aluminium hydroxide
Q.16 Which of the following is commonly used as a bleaching agent in households?
Sodium hypochlorite
Calcium carbonate
Magnesium hydroxide
Potassium chloride
Explanation - Sodium hypochlorite is used for bleaching clothes and disinfecting surfaces.
Correct answer is: Sodium hypochlorite
Q.17 Which of the following is an ingredient in shampoos for removing grease?
Sodium lauryl sulfate
Calcium hydroxide
Potassium permanganate
Magnesium sulfate
Explanation - Sodium lauryl sulfate is a surfactant that helps in cleaning oils and dirt from hair.
Correct answer is: Sodium lauryl sulfate
Q.18 Which chemical is used in the manufacture of glass bottles for soft drinks?
Sodium carbonate
Calcium oxide
Silicon dioxide
Potassium hydroxide
Explanation - Silicon dioxide is the main ingredient in glass, giving it transparency and strength.
Correct answer is: Silicon dioxide
Q.19 Which chemical is used in soap to provide fragrance and antibacterial property?
Triclosan
Sodium carbonate
Calcium hydroxide
Magnesium oxide
Explanation - Triclosan is an antibacterial agent used in some soaps to prevent bacterial growth.
Correct answer is: Triclosan
Q.20 Which chemical is commonly used in antiseptic creams for skin infections?
Boric acid
Calcium carbonate
Sodium chloride
Magnesium hydroxide
Explanation - Boric acid has mild antiseptic properties and is used in creams for minor skin infections.
Correct answer is: Boric acid
Q.21 Which of the following is used in mosquito repellents?
N,N-Diethyl-meta-toluamide (DEET)
Sodium chloride
Calcium carbonate
Potassium permanganate
Explanation - DEET is a chemical compound widely used in insect repellents to repel mosquitoes and other insects.
Correct answer is: N,N-Diethyl-meta-toluamide (DEET)
Q.22 Which chemical is used in the treatment of athlete’s foot?
Tolnaftate
Sodium bicarbonate
Magnesium hydroxide
Calcium oxide
Explanation - Tolnaftate is an antifungal agent used to treat skin infections like athlete’s foot.
Correct answer is: Tolnaftate
Q.23 Which chemical is used in deodorants to reduce body odor?
Aluminium compounds
Sodium chloride
Calcium carbonate
Potassium permanganate
Explanation - Aluminium compounds inhibit bacterial growth in sweat, thereby reducing body odor.
Correct answer is: Aluminium compounds
Q.24 Which of the following is used in nail polish removers?
Acetone
Ethanol
Sodium hydroxide
Magnesium sulfate
Explanation - Acetone is a solvent used in nail polish removers due to its ability to dissolve nail polish effectively.
Correct answer is: Acetone
Q.25 Which of the following is used in antiseptic mouthwashes?
Chlorhexidine
Sodium bicarbonate
Magnesium sulfate
Calcium oxide
Explanation - Chlorhexidine is used in mouthwashes to reduce oral bacteria and prevent gum infections.
Correct answer is: Chlorhexidine