Free Industrial Chemistry MCQs with Answers
292 Industrial Chemistry MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Industrial chemistry applies chemical reactions and material properties to the manufacture of adhesives, dyes and polymers. Coverage includes addition and condensation polymerisation, thermoplastics and thermosetting polymers, the structural basis of colour in dyes, and how adhesive composition enables bonding between surfaces.
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Read the Industrial Chemistry notesFree MDCAT chapter notes with key terms292 questions · page 7 of 15
- A. Nylon-6, 6
- B. Bakelite
- C. Nylon-6, 8
- D. Terylene
Explanation: Nylon-6,6 is a specific type of polyamide. It is synthesized by the condensation polymerization of two monomers, each containing six…
Correct answer: Nylon-6, 6- A. Urea
- B. Starch
- C. Polythene
- D. Natural rubber
Explanation: A polymer is a large molecule (macromolecule) composed of many repeating structural units called monomers.
Correct answer: Urea- A. It is used in large scale production of cable insulator
- B. It is a copolymer
- C. It is a homopolymer
- D. It is used in the manufacturing of pipes and other construction materials
Explanation: A homopolymer is a polymer made from only one type of monomer. PVC is synthesized by the polymerization of a single monomer, vinyl…
Correct answer: It is a copolymer- A. Monocarboxylic acid and diamines
- B. Dicarboxylic acids and diamines
- C. Dicarboxylic acids and simple amines
- D. All of the above
Explanation: Polyamides, such as Nylon, are formed by the step-growth condensation polymerization of monomers containing two functional groups.
Correct answer: Dicarboxylic acids and diamines- A. Iron oxide
- B. Platinum gauze
- C. Palladium
- D. Nickel
Explanation: Styrene is produced industrially (not polymerized) by the dehydrogenation of ethylbenzene at about 600°C in the presence of an iron(III)…
Correct answer: Iron oxide- A. FeCl3
- B. Al2O3
- C. V2O5
- D. Cr2O3
Explanation: The industrial synthesis of vinyl acetate involves the reaction of ethylene, acetic acid, and oxygen over a palladium catalyst.
Correct answer: FeCl3- A. FeCl3
- B. Al2O3
- C. V2O5
- D. Cr2O3
Explanation: The catalyst employed in the preparation of vinyl acetate monomer from acetaldehyde and acetic anhydride is FeCl3.
Correct answer: FeCl3- A. Cracking
- B. Reforming
- C. Fractional distillation
- D. Polymerization
Explanation: Fractional distillation is the primary process in oil refineries. It separates crude oil into useful fractions like gasoline and diesel by…
Correct answer: Fractional distillation- A. Sulfuric acid
- B. Ammonia
- C. Sodium hydroxide
- D. Nitric acid
Explanation: The Haber-Bosch process is a cornerstone of the modern chemical industry.
Correct answer: Ammonia- A. To remove sulfur from gasoline
- B. To increase the octane number of gasoline
- C. To break down large hydrocarbon molecules into smaller, more valuable ones
- D. To combine small hydrocarbon molecules into larger ones
Explanation: Catalytic cracking uses heat, pressure, and a catalyst to break large, less useful hydrocarbon chains from crude oil into smaller, more…
Correct answer: To break down large hydrocarbon molecules into smaller, more valuable ones- A. Hydrochloric acid (HCl)
- B. Nitric acid (HNO₃)
- C. Sulfuric acid (H₂SO₄)
- D. Acetic acid (CH₃COOH)
Explanation: The Contact process is the main method for producing sulfuric acid. It involves catalytically oxidizing sulfur dioxide (SO₂) to sulfur…
Correct answer: Sulfuric acid (H₂SO₄)- A. Carbon (coke)
- B. Carbon monoxide (CO)
- C. Limestone
- D. Oxygen
Explanation: While coke (carbon) is added to the furnace, it primarily burns to produce carbon monoxide (CO).
Correct answer: Carbon monoxide (CO)- A. Chlorine, Sodium, and Hydrogen
- B. Chlorine, Sodium hydroxide, and Hydrogen
- C. Sodium carbonate, Chlorine, and Water
- D. Sodium, Hydroxide, and Oxygen
Explanation: The electrolysis of a concentrated sodium chloride solution (brine) is a major industrial process.
Correct answer: Chlorine, Sodium hydroxide, and Hydrogen- A. Addition polymerization
- B. Condensation polymerization
- C. Free-radical polymerization
- D. Ziegler-Natta polymerization
Explanation: In condensation polymerization, monomers with two or more reactive functional groups join together.
Correct answer: Condensation polymerization- A. Low-density polyethylene (LDPE)
- B. High-density polyethylene (HDPE)
- C. PVC
- D. Nylon
Explanation: Ziegler-Natta catalysts provide a high degree of control over the polymerization process.
Correct answer: High-density polyethylene (HDPE)- A. Ammonium nitrate
- B. Urea
- C. Ammonium Sulphate
- D. Anhydrous ammonia
Explanation: Urea, CO(NH₂)₂, has the highest nitrogen content of all solid nitrogenous fertilizers.
Correct answer: Urea- A. Iron
- B. Copper
- C. Aluminum
- D. Titanium
Explanation: The Hall-Héroult process is the only method used for the large-scale production of aluminum.
Correct answer: Aluminum- A. A. Cracking
- B. B. Alkylation
- C. C. Isomerization
- D. D. Catalytic reforming
Explanation: Catalytic reforming is a key refinery process that uses heat, pressure, and a catalyst (like platinum) to rearrange hydrocarbon molecules.
Correct answer: D. Catalytic reforming- A. Limestone and clay
- B. Sand and gypsum
- C. Iron ore and bauxite
- D. Salt and water
Explanation: The main raw materials for Portland cement are limestone, which provides the calcium carbonate, and clay or shale, which provides silica…
Correct answer: Limestone and clay- A. Esters
- B. Plastics
- C. Soaps
- D. Fertilizers
Explanation: Saponification is the chemical reaction between a fat or oil (a triglyceride) and a strong base, like sodium hydroxide.
Correct answer: Soaps