Engineering Entrance
Q. Which of the following is a characteristic of elastomers?
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A.
Brittle
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B.
Rigid
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C.
Elastic
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D.
Conductive
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 characteristic of unsaturated hydrocarbons?
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A.
Only single bonds
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B.
Contains double or triple bonds
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C.
Higher boiling points
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D.
Less reactive
Solution
Unsaturated hydrocarbons contain double or triple bonds, making them more reactive than saturated hydrocarbons.
Correct Answer: B — Contains double or triple bonds
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Q. Which of the following is a characteristic reaction of phenols? (2021) 2021
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A.
Esterification
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B.
Nitration
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C.
Halogenation
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D.
Hydrogenation
Solution
Phenols undergo halogenation readily due to the electron-donating effect of the hydroxyl group.
Correct Answer: C — Halogenation
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Q. Which of the following is a common use of ketones?
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A.
Solvents
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B.
Preservatives
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C.
Fragrances
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D.
All of the above
Solution
Ketones are commonly used as solvents, preservatives, and fragrances.
Correct Answer: D — All of the above
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Q. Which of the following is a common use of PVC?
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A.
Clothing
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B.
Pipes
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C.
Food packaging
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D.
Adhesives
Solution
PVC (Polyvinyl Chloride) is commonly used in the production of pipes due to its durability and resistance to corrosion.
Correct Answer: B — Pipes
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Q. Which of the following is a common use of transition metals?
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A.
Insulators
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B.
Catalysts
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C.
Noble gases
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D.
Non-metals
Solution
Transition metals are commonly used as catalysts in various chemical reactions.
Correct Answer: B — Catalysts
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Q. Which of the following is a lanthanide series element?
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A.
Yttrium
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B.
Neodymium
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C.
Zirconium
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D.
Ruthenium
Solution
Neodymium (Nd) is a member of the lanthanide series.
Correct Answer: B — Neodymium
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Q. Which of the following is a lipid? (2023) 2023
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A.
Starch
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B.
Cholesterol
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C.
Cellulose
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D.
Glucose
Solution
Cholesterol is a type of lipid that is important for cell membrane structure.
Correct Answer: B — Cholesterol
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Q. Which of the following is a polymer of glucose? (2015)
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A.
Starch
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B.
Glycogen
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C.
Cellulose
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D.
All of the above
Solution
Starch, glycogen, and cellulose are all polymers made from glucose.
Correct Answer: D — All of the above
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Q. Which of the following is a primary alcohol? (2020) 2020
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A.
2-Propanol
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B.
1-Butanol
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C.
Cyclohexanol
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D.
2-Pentanol
Solution
1-Butanol has the hydroxyl group (-OH) attached to a primary carbon, making it a primary alcohol.
Correct Answer: B — 1-Butanol
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Q. Which of the following is a primary alcohol? (2022) 2022
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A.
1-butanol
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B.
2-butanol
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C.
tert-butanol
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D.
cyclohexanol
Solution
1-butanol has the hydroxyl group (-OH) attached to a primary carbon atom, making it a primary alcohol.
Correct Answer: A — 1-butanol
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Q. Which of the following is a primary amine? (2022) 2022
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A.
Ethylamine
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B.
Dimethylamine
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C.
Trimethylamine
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D.
Aniline
Solution
Ethylamine (C2H5NH2) is a primary amine as it has one alkyl group attached to the nitrogen atom.
Correct Answer: A — Ethylamine
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Q. Which of the following is a primary cell? (2023) 2023
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A.
Lead-acid battery
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B.
Nickel-cadmium battery
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C.
Zinc-carbon battery
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D.
Lithium-ion battery
Solution
The zinc-carbon battery is a type of primary cell, which cannot be recharged.
Correct Answer: C — Zinc-carbon battery
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Q. Which of the following is a property of halogens? (2021) 2021
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A.
They are all metals
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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 colorless gases
Solution
Halogens 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 reducing agent in the reaction 2MnO4- + 5C2O4^2- + 16H+ → 2Mn^2+ + 10CO2 + 8H2O? (2020)
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A.
MnO4-
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B.
C2O4^2-
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C.
H+
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D.
CO2
Solution
C2O4^2- (oxalate ion) is oxidized to CO2, thus it acts as a reducing agent in this reaction.
Correct Answer: B — C2O4^2-
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Q. Which of the following is a saturated carboxylic acid?
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A.
Hexanoic acid
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B.
Hexenoic acid
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C.
Cyclohexanoic acid
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D.
Benzoic acid
Solution
Hexanoic acid is a saturated carboxylic acid.
Correct Answer: A — Hexanoic acid
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Q. Which of the following is a saturated fatty acid?
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A.
Oleic acid
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B.
Stearic acid
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C.
Linoleic acid
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D.
Palmitoleic acid
Solution
Stearic acid is a saturated fatty acid, meaning it has no double bonds between carbon atoms.
Correct Answer: B — Stearic acid
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Q. Which of the following is a saturated hydrocarbon?
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A.
Ethylene
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B.
Acetylene
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C.
Cyclohexane
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D.
Benzene
Solution
Cyclohexane is a saturated hydrocarbon, containing only single bonds.
Correct Answer: C — Cyclohexane
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Q. Which of the following is a secondary alcohol? (2021) 2021
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A.
1-Pentanol
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B.
2-Pentanol
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C.
Cyclopentanol
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D.
3-Pentanol
Solution
2-Pentanol has the hydroxyl group attached to a secondary carbon, making it a secondary alcohol.
Correct Answer: B — 2-Pentanol
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Q. Which of the following is a strong acid? (2021) 2021
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A.
HCl
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B.
CH3COOH
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C.
H2CO3
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D.
NH3
Solution
Hydrochloric acid (HCl) is a strong acid that completely dissociates in water.
Correct Answer: A — HCl
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Q. Which of the following is a strong acid? (2023) 2023
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A.
Acetic acid
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B.
Citric acid
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C.
Hydrochloric acid
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D.
Carbonic acid
Solution
Hydrochloric acid (HCl) is a strong acid.
Correct Answer: C — Hydrochloric acid
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Q. Which of the following is a strong carboxylic acid?
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A.
Formic acid
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B.
Acetic acid
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C.
Propanoic acid
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D.
Butyric acid
Solution
Formic acid is considered a stronger carboxylic acid compared to the others listed.
Correct Answer: A — Formic acid
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Q. Which of the following is a synthetic polymer?
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A.
Rubber
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B.
Silk
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C.
Wool
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D.
Polyvinyl chloride
Solution
Polyvinyl chloride (PVC) is a synthetic polymer commonly used in construction and plumbing.
Correct Answer: D — Polyvinyl chloride
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Q. Which of the following is a thermosetting polymer?
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A.
Polyethylene
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B.
Polystyrene
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C.
Bakelite
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D.
PVC
Solution
Bakelite is a thermosetting polymer, while the others are thermoplastics.
Correct Answer: C — Bakelite
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Q. Which of the following is an example of a colligative property? (2021)
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A.
Boiling point elevation
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B.
Density
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C.
Color
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D.
pH
Solution
Colligative properties depend on the number of solute particles in a solution, and boiling point elevation is one such property.
Correct Answer: A — Boiling point elevation
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Q. Which of the following is an example of a condensation polymer? (2023)
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A.
Polyethylene
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B.
Nylon-6,6
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C.
Polystyrene
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D.
Polyvinyl chloride
Solution
Nylon-6,6 is a condensation polymer formed by the reaction of hexamethylenediamine and adipic acid.
Correct Answer: B — Nylon-6,6
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Q. Which of the following is an example of a plasma? (2023)
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A.
Ice
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B.
Water
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C.
Steam
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D.
Lightning
Solution
Lightning is an example of plasma, which is a state of matter consisting of ionized gas with free electrons.
Correct Answer: D — Lightning
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Q. Which of the following is an example of an alkane? (2023)
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A.
C2H4
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B.
C3H8
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C.
C4H6
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D.
C5H10
Solution
Alkanes are saturated hydrocarbons with the general formula CnH2n+2. C3H8 (propane) fits this formula.
Correct Answer: B — C3H8
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Q. Which of the following is an example of an alkene? (2023)
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A.
Ethane
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B.
Propene
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C.
Butane
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D.
Cyclohexane
Solution
Propene is an alkene, characterized by a carbon-carbon double bond.
Correct Answer: B — Propene
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Q. Which of the following is an example of an alkene? (2023) 2023
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A.
Ethane
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B.
Propene
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C.
Butane
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D.
Cyclohexane
Solution
Propene is an alkene, characterized by a carbon-carbon double bond.
Correct Answer: B — Propene
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