Q. Which of the following is a property of elastomers?
-
A.
Brittle
-
B.
Rigid
-
C.
Elastic
-
D.
Insoluble
Solution
Elastomers are known for their elastic properties, allowing them to stretch and return to their original shape.
Correct Answer: C — Elastic
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Q. Which of the following is a reducing agent for aldehydes?
-
A.
H2
-
B.
KMnO4
-
C.
Na2Cr2O7
-
D.
HCl
Solution
Hydrogen gas (H2) can act as a reducing agent for aldehydes, converting them to alcohols.
Correct Answer: A — H2
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Q. Which of the following is a reducing agent that can reduce ketones?
-
A.
H2/Pd
-
B.
KMnO4
-
C.
Na2Cr2O7
-
D.
AgNO3
Solution
H2 in the presence of palladium (Pd) is a reducing agent that can reduce ketones to alcohols.
Correct Answer: A — H2/Pd
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Q. Which of the following is a reducing sugar?
-
A.
Fructose
-
B.
Sucrose
-
C.
Starch
-
D.
Cellulose
Solution
Fructose is a reducing sugar, while sucrose, starch, and cellulose are not.
Correct Answer: A — Fructose
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Q. Which of the following is a secondary alcohol?
-
A.
2-pentanol
-
B.
1-pentanol
-
C.
3-pentanol
-
D.
Cyclopentanol
Solution
2-pentanol has the hydroxyl group on the second carbon, making it a secondary alcohol.
Correct Answer: A — 2-pentanol
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Q. Which of the following is a secondary amine?
-
A.
Ethylamine
-
B.
Dimethylamine
-
C.
Methylamine
-
D.
Aniline
Solution
Dimethylamine is a secondary amine as it has two alkyl groups attached to the nitrogen.
Correct Answer: B — Dimethylamine
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Q. Which of the following is a side effect of excessive caffeine consumption?
-
A.
Drowsiness
-
B.
Increased alertness
-
C.
Insomnia
-
D.
Weight gain
Solution
Excessive caffeine can lead to insomnia and disrupt sleep patterns.
Correct Answer: C — Insomnia
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Q. Which of the following is a storage form of glucose in animals?
-
A.
Starch
-
B.
Cellulose
-
C.
Glycogen
-
D.
Chitin
Solution
Glycogen is the storage form of glucose in animals, while starch serves this role in plants.
Correct Answer: C — Glycogen
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Q. Which of the following is a strong +I effect group?
-
A.
-F
-
B.
-Cl
-
C.
-Br
-
D.
-CH3
Solution
The -CH3 group is a strong +I effect group as it donates electron density through the inductive effect.
Correct Answer: D — -CH3
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Q. Which of the following is a strong -M group?
-
A.
-OCH3
-
B.
-NO2
-
C.
-CH3
-
D.
-F
Solution
-NO2 is a strong -M group as it withdraws electron density through resonance.
Correct Answer: B — -NO2
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Q. Which of the following is a strong nucleophile?
-
A.
Water
-
B.
Ammonia
-
C.
Sodium chloride
-
D.
Hydrochloric acid
Solution
Ammonia (NH3) is a strong nucleophile due to the presence of a lone pair of electrons on the nitrogen atom.
Correct Answer: B — Ammonia
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Q. Which of the following is a structural polysaccharide?
-
A.
Starch
-
B.
Glycogen
-
C.
Cellulose
-
D.
Maltose
Solution
Cellulose is a structural polysaccharide found in the cell walls of plants.
Correct Answer: C — Cellulose
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Q. Which of the following is a terminal alkyne?
-
A.
1-butyne
-
B.
2-butyne
-
C.
1-pentyne
-
D.
3-pentyne
Solution
1-butyne is a terminal alkyne because it has a triple bond at the end of the carbon chain.
Correct Answer: A — 1-butyne
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Q. Which of the following is an alkane?
-
A.
C2H4
-
B.
C3H6
-
C.
C4H10
-
D.
C5H8
Solution
Alkanes are saturated hydrocarbons with the general formula CnH2n+2. C4H10 (butane) fits this formula.
Correct Answer: C — C4H10
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Q. Which of the following is an example of a -I effect?
-
A.
–F
-
B.
–OCH3
-
C.
–CH3
-
D.
–C2H5
Solution
The –F group is an example of a -I effect as it withdraws electron density through sigma bonds.
Correct Answer: A — –F
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Q. Which of the following is an example of a -I group?
-
A.
–F
-
B.
–Cl
-
C.
–Br
-
D.
–I
Solution
All halogens (-F, -Cl, -Br, -I) exhibit -I effect, but -F is the strongest among them.
Correct Answer: A — –F
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Q. Which of the following is an example of a -M effect?
-
A.
–NO2
-
B.
–CH3
-
C.
–OCH3
-
D.
–Cl
Solution
The –NO2 group withdraws electron density through resonance, exhibiting a -M effect.
Correct Answer: A — –NO2
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Q. Which of the following is an example of a compound that exhibits tautomeric isomerism?
-
A.
Acetaldehyde
-
B.
Acetone
-
C.
Ethanol
-
D.
Benzene
Solution
Acetaldehyde can exist in two forms (keto and enol) that readily interconvert, demonstrating tautomeric isomerism.
Correct Answer: A — Acetaldehyde
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Q. Which of the following is an example of a copolymer?
-
A.
Polyethylene
-
B.
Nylon-6,6
-
C.
Polystyrene
-
D.
Polyvinyl chloride
Solution
Nylon-6,6 is a copolymer made from two different monomers: hexamethylenediamine and adipic acid.
Correct Answer: B — Nylon-6,6
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Q. Which of the following is an example of a synthetic detergent?
-
A.
Soap
-
B.
Sodium lauryl sulfate
-
C.
Glycerin
-
D.
Sodium bicarbonate
Solution
Sodium lauryl sulfate is a synthetic detergent commonly used in personal care products.
Correct Answer: B — Sodium lauryl sulfate
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Q. Which of the following is an example of a synthetic polymer?
-
A.
Rubber
-
B.
Silk
-
C.
Polyvinyl chloride (PVC)
-
D.
Starch
Solution
Polyvinyl chloride (PVC) is a synthetic polymer widely used in construction and plumbing.
Correct Answer: C — Polyvinyl chloride (PVC)
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Q. Which of the following is an example of an antibiotic?
-
A.
Aspirin
-
B.
Penicillin
-
C.
Ibuprofen
-
D.
Paracetamol
Solution
Penicillin is a well-known antibiotic used to treat bacterial infections.
Correct Answer: B — Penicillin
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Q. Which of the following is an example of chain isomerism?
-
A.
Pentane and 2-methylbutane
-
B.
Butene and Butyne
-
C.
Ethanol and Dimethyl ether
-
D.
Acetic acid and Propanoic acid
Solution
Pentane and 2-methylbutane differ in the arrangement of carbon atoms, thus showing chain isomerism.
Correct Answer: A — Pentane and 2-methylbutane
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Q. Which of the following is an example of cis-trans isomerism?
-
A.
1-pentene
-
B.
2-pentene
-
C.
3-pentene
-
D.
Cyclopentane
Solution
2-pentene can exist in cis and trans forms due to the presence of a double bond.
Correct Answer: B — 2-pentene
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Q. Which of the following is an example of optical isomerism?
-
A.
Lactic acid
-
B.
Butane
-
C.
Cyclohexane
-
D.
Acetone
Solution
Lactic acid has a chiral center and can exist as two enantiomers, thus exhibiting optical isomerism.
Correct Answer: A — Lactic acid
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Q. Which of the following is an example of structural isomerism?
-
A.
Cis-2-butene and trans-2-butene
-
B.
1-bromopropane and 2-bromopropane
-
C.
Glucose and fructose
-
D.
1,2-dichloroethane and 1,1-dichloroethane
Solution
1-bromopropane and 2-bromopropane differ in the position of the bromine atom, showing structural isomerism.
Correct Answer: B — 1-bromopropane and 2-bromopropane
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Q. Which of the following is an example of tautomeric isomerism?
-
A.
Acetaldehyde and Ethanol
-
B.
Acetone and Propan-2-ol
-
C.
Keto-enol tautomerism
-
D.
Cis and Trans isomers
Solution
Keto-enol tautomerism is a classic example of tautomeric isomerism.
Correct Answer: C — Keto-enol tautomerism
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Q. Which of the following is NOT a characteristic of the inductive effect?
-
A.
Permanent
-
B.
Distance-dependent
-
C.
Reversible
-
D.
Weakens with distance
Solution
The inductive effect is permanent and weakens with distance, but it is not reversible.
Correct Answer: C — Reversible
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Q. Which of the following is NOT a derivative of carboxylic acid?
-
A.
Ester
-
B.
Amide
-
C.
Acid chloride
-
D.
Alcohol
Solution
Alcohols are not derivatives of carboxylic acids; they are separate functional groups.
Correct Answer: D — Alcohol
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Q. Which of the following is NOT a function of carbohydrates?
-
A.
Energy storage
-
B.
Structural support
-
C.
Hormone production
-
D.
Cell recognition
Solution
Carbohydrates are primarily involved in energy storage, structural support, and cell recognition, but they do not produce hormones.
Correct Answer: C — Hormone production
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