Q. Which of the following is a common property of halogens? (2023)
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A.
They are all gases at room temperature
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B.
They have low electronegativity
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C.
They form diatomic molecules
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D.
They are metals
Solution
Halogens commonly exist as diatomic molecules (e.g., Cl2, F2).
Correct Answer: C — They form diatomic molecules
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Q. Which of the following is a common side effect of antibiotics? (2019)
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A.
Nausea
-
B.
Headache
-
C.
Diarrhea
-
D.
All of the above
Solution
Antibiotics can cause a range of side effects, including nausea, headache, and diarrhea.
Correct Answer: D — All of the above
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Q. Which of the following is a common source of dietary fiber? (2020)
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A.
Meat
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B.
Dairy
-
C.
Fruits
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D.
Oils
Solution
Fruits are a common source of dietary fiber, which is important for digestive health.
Correct Answer: C — Fruits
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Q. Which of the following is a common source of omega-3 fatty acids? (2022)
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A.
Olive oil
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B.
Fish oil
-
C.
Butter
-
D.
Coconut oil
Solution
Fish oil is a rich source of omega-3 fatty acids, which are important for heart health and brain function.
Correct Answer: B — Fish oil
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Q. Which of the following is a common use of caffeine? (2020)
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A.
Pain reliever
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B.
Stimulant
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C.
Antiseptic
-
D.
Antibiotic
Solution
Caffeine is primarily used as a stimulant to increase alertness and reduce fatigue.
Correct Answer: B — Stimulant
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Q. Which of the following is a common use of citric acid? (2022)
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A.
Flavoring agent
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B.
Preservative
-
C.
Cleaning agent
-
D.
All of the above
Solution
Citric acid is widely used as a flavoring agent, preservative, and cleaning agent, showcasing its multifunctional properties.
Correct Answer: D — All of the above
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Q. Which of the following is a common use of glycerol in food? (2021)
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A.
Sweetener
-
B.
Preservative
-
C.
Thickening agent
-
D.
All of the above
Solution
Glycerol is used in food as a sweetener, preservative, and thickening agent, making it versatile in food applications.
Correct Answer: D — All of the above
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Q. Which of the following is a common use of glycerol? (2023)
-
A.
Preservative
-
B.
Moisturizer
-
C.
Sweetener
-
D.
All of the above
Solution
Glycerol is used as a preservative, moisturizer, and sweetener in various products.
Correct Answer: D — All of the above
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Q. Which of the following is a common use of phenol? (2022)
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A.
Disinfectant
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B.
Food preservative
-
C.
Flavoring agent
-
D.
Coloring agent
Solution
Phenol is widely used as a disinfectant due to its antimicrobial properties.
Correct Answer: A — Disinfectant
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Q. Which of the following is a common use of sodium bicarbonate? (2023)
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A.
Baking
-
B.
Cleaning
-
C.
Antacid
-
D.
All of the above
Solution
Sodium bicarbonate is used in baking as a leavening agent, in cleaning products, and as an antacid for relieving heartburn.
Correct Answer: D — All of the above
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Q. Which of the following is a common use of sulfur? (2022)
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A.
Fertilizers
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B.
Explosives
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C.
Rubber production
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D.
All of the above
Solution
Sulfur is used in fertilizers, explosives, and rubber production.
Correct Answer: D — All of the above
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Q. Which of the following is a cyclic hydrocarbon? (2019)
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A.
Cyclohexane
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B.
Hexane
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C.
Octane
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D.
Decane
Solution
Cyclohexane is a cyclic hydrocarbon with a ring structure.
Correct Answer: A — Cyclohexane
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Q. Which of the following is a method for the preparation of alcohols? (2022)
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A.
Hydrolysis of alkyl halides
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B.
Oxidation of alkenes
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C.
Reduction of ketones
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D.
All of the above
Solution
All of the mentioned methods can be used to prepare alcohols.
Correct Answer: D — All of the above
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Q. Which of the following is a method for the preparation of aldehydes? (2019)
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A.
Hydration of alkynes
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B.
Oxidation of primary alcohols
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C.
Reduction of carboxylic acids
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D.
Dehydrogenation of alcohols
Solution
Aldehydes can be prepared by the oxidation of primary alcohols.
Correct Answer: B — Oxidation of primary alcohols
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Q. Which of the following is a method of hydrogen production? (2023)
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A.
Electrolysis of water
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B.
Steam reforming of natural gas
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C.
Thermochemical water splitting
-
D.
All of the above
Solution
Hydrogen can be produced through various methods including electrolysis of water, steam reforming of natural gas, and thermochemical water splitting.
Correct Answer: D — All of the above
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Q. Which of the following is a method to reduce carbon footprint? (2020)
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A.
Using fossil fuels
-
B.
Increasing energy efficiency
-
C.
Deforestation
-
D.
Burning waste
Solution
Increasing energy efficiency helps to reduce carbon emissions and thus lowers the carbon footprint.
Correct Answer: B — Increasing energy efficiency
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Q. Which of the following is a natural source of omega-3 fatty acids? (2023)
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A.
Flaxseed oil
-
B.
Coconut oil
-
C.
Palm oil
-
D.
Corn oil
Solution
Flaxseed oil is a rich natural source of omega-3 fatty acids, beneficial for heart health.
Correct Answer: A — Flaxseed oil
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Q. Which of the following is a property of actinides? (2020)
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A.
All are radioactive
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B.
All are non-metals
-
C.
All are stable
-
D.
All are found in nature
Solution
All actinides are radioactive, with many being synthetic and unstable.
Correct Answer: A — All are radioactive
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Q. Which of the following is a property of addition polymers? (2022)
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A.
They are formed by the elimination of small molecules
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B.
They have a high degree of crystallinity
-
C.
They are formed from unsaturated monomers
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D.
They are always biodegradable
Solution
Addition polymers are formed from unsaturated monomers through addition reactions.
Correct Answer: C — They are formed from unsaturated monomers
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Q. Which of the following is a property of aldehydes? (2023)
-
A.
They are generally more reactive than ketones
-
B.
They do not undergo oxidation
-
C.
They are less soluble in water than ketones
-
D.
They have higher boiling points than alcohols
Solution
Aldehydes are generally more reactive than ketones due to the presence of the hydrogen atom attached to the carbonyl carbon.
Correct Answer: A — They are generally more reactive than ketones
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Q. Which of the following is a property of amorphous solids? (2023)
-
A.
Anisotropic
-
B.
Isotropic
-
C.
Definite melting point
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D.
Ordered structure
Solution
Amorphous solids are isotropic, meaning their properties are the same in all directions, unlike crystalline solids.
Correct Answer: B — Isotropic
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Q. Which of the following is a property of covalent network solids? (2023)
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A.
Good electrical conductors
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B.
High melting points
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C.
Malleable
-
D.
Soluble in water
Solution
Covalent network solids, such as diamond, have very high melting points due to the strong covalent bonds throughout the structure.
Correct Answer: B — High melting points
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Q. Which of the following is a property of ethers? (2020)
-
A.
High boiling point
-
B.
Soluble in water
-
C.
Flammable
-
D.
Non-polar
Solution
Ethers are generally flammable due to their hydrocarbon nature, although they have moderate boiling points.
Correct Answer: C — Flammable
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Q. Which of the following is a property of ketones? (2020)
-
A.
More reactive than aldehydes
-
B.
Less polar than aldehydes
-
C.
Higher boiling points than aldehydes
-
D.
None of the above
Solution
Ketones are generally less polar than aldehydes due to the absence of a hydrogen atom attached to the carbonyl carbon.
Correct Answer: B — Less polar than aldehydes
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Q. Which of the following is a synthetic dye used in food? (2023)
-
A.
Curcumin
-
B.
Tartrazine
-
C.
Beetroot red
-
D.
Carotene
Solution
Tartrazine is a synthetic yellow dye commonly used in food products.
Correct Answer: B — Tartrazine
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Q. Which of the following is a synthetic food colorant? (2021)
-
A.
Beetroot red
-
B.
Caramel
-
C.
Tartrazine
-
D.
Paprika
Solution
Tartrazine is a synthetic yellow food colorant commonly used in various food products.
Correct Answer: C — Tartrazine
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Q. Which of the following is a synthetic polymer used in everyday products? (2020)
-
A.
Cellulose
-
B.
Polystyrene
-
C.
Starch
-
D.
Chitin
Solution
Polystyrene is a synthetic polymer commonly used in packaging and insulation materials.
Correct Answer: B — Polystyrene
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Q. Which of the following is a synthetic sweetener? (2023)
-
A.
Fructose
-
B.
Xylitol
-
C.
Aspartame
-
D.
Honey
Solution
Aspartame is a synthetic sweetener used in many low-calorie and sugar-free products.
Correct Answer: C — Aspartame
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Q. Which of the following is a tertiary alcohol? (2021)
-
A.
2-propanol
-
B.
1-butanol
-
C.
Cyclopentanol
-
D.
1-pentanol
Solution
2-propanol (isopropanol) is a tertiary alcohol as the hydroxyl group is attached to a carbon that is connected to three other carbons.
Correct Answer: A — 2-propanol
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Q. Which of the following is a tertiary amine? (2022)
-
A.
CH3NH2
-
B.
C2H5NH2
-
C.
N(CH3)3
-
D.
C6H5NH2
Solution
N(CH3)3 (trimethylamine) is a tertiary amine as it has three alkyl groups attached to the nitrogen.
Correct Answer: C — N(CH3)3
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