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 10 of 15
- A. High molecular weight compounds from monomers
- B. Low molecular weight compounds from monomers
- C. Intermediate molecular weight compounds from monomers
- D. High molecular weight compounds from polymers
Explanation: Polymerization is the process of chemically bonding monomers to form polymers, which are high molecular weight compounds.
Correct answer: High molecular weight compounds from monomers- A. Substitution reaction
- B. Addition polymerisation
- C. Condensation polymerisation
- D. Condensation reaction
Explanation: The formation of PVC (polyvinyl chloride) from vinyl chloride is an example of addition polymerization.
Correct answer: Addition polymerisation- A. Mixture of low-volatile oil and wax
- B. Mixture of volatile oil and wax
- C. Fats and wax
- D. Fats and oil
Explanation: The main components of lipsticks are a mixture of low-volatile oils and wax.
Correct answer: Mixture of low-volatile oil and wax- A. Acrylic
- B. Nylon
- C. Polyester
- D. All of the above
Explanation: The correct answer is Acrylic. Acrylic is a common material used for artificial nails because it is strong, durable, and can be easily…
Correct answer: Acrylic- A. Hot adhesive
- B. Multipart adhesive
- C. One-part adhesive
- D. Contact adhesive
Explanation: The correct answer is Option B: Multipart adhesive. Polyester and polyurethane resins often consist of two or more components that must be…
Correct answer: Multipart adhesive- A. CH2=CH2
- B. CH2=CCI2
- C. CICH2=CH2CI
- D. CH2=CHCI
Explanation: Polyvinyl Chloride (PVC) is produced by the polymerization of vinyl chloride monomers, represented by the structure CH2=CHCI.
Correct answer: CH2=CHCI187. During the formation of addition polymerization, which smaller molecules you think are eliminated:
- A. H₂O
- B. HCl
- C. NH3
- D. No molecules are eliminated
Explanation: Addition polymerization involves the joining of monomers without the loss of any small molecules, which is a key characteristic…
Correct answer: No molecules are eliminated- A. Adipic acid and hexamethylenediamine
- B. Dimethyl terephthalate and ethylene glycol
- C. Neoprene
- D. Phenol and formaldehyde
Explanation: Bakelite is a thermosetting phenol formaldehyde resin, formed from an elimination reaction of phenol with formaldehyde.
Correct answer: Phenol and formaldehyde- A. Mixture of non-volatile oil and solid wax
- B. Mixture of volatile oil and wax
- C. Fats and wax
- D. Fats, oil and wax
Explanation: The correct answer is Option B: A mixture of volatile oil and wax. In cosmetic formulations like lipstick, volatile oils are crucial as…
Correct answer: Mixture of volatile oil and wax- A. Hot adhesive
- B. Multipart adhesive
- C. One-part adhesive
- D. Contact adhesive
Explanation: Polyester and polyurethane resins are commonly used as multipart adhesives, meaning they require mixing two or more components before…
Correct answer: Multipart adhesive- A. W.H. Carothers
- B. Ziegler and Natta
- C. Staudinger
- D. William Henry Perkin
Explanation: The correct answer is Staudinger. Hermann Staudinger's work was pivotal in establishing the concept of macromolecules, such as polymers…
Correct answer: Staudinger- A. Linear polymer
- B. Branched polymer
- C. Cross-linked polymer
- D. Homopolymer
Explanation: The correct answer is Cross-linked polymer. Cross-linked polymers are characterized by their three-dimensional network structure, where…
Correct answer: Cross-linked polymer- A. Linear
- B. Branched
- C. Cross-linked
- D. Terpolymer
Explanation: Glycogen is a branched polysaccharide composed of glucose units. Its branched structure allows for rapid release of glucose when it is…
Correct answer: Branched- A. The total molecular mass of the polymer
- B. The number of monomers in the polymer
- C. The number of repeating units in the chain
- D. The molecular mass of a single monomer
Explanation: The correct answer is Option C: The degree of polymerization (DP) refers to the number of repeating units in a polymer chain.
Correct answer: The number of repeating units in the chain- A. 63,000 amu
- B. 20,000 amu
- C. 1,000 amu
- D. 6,300 amu
Explanation: The molecular mass of a polymer is calculated by multiplying the mass of its repeating unit by its degree of polymerization (DP).
Correct answer: 63,000 amu- A. Homopolymer
- B. Copolymer
- C. Terpolymer
- D. Branched polymer
Explanation: The correct answer is Terpolymer. A terpolymer is specifically defined as a polymer made from the polymerization of three distinct types…
Correct answer: Terpolymer- A. PVC pipes
- B. Plastic toys
- C. Polystyrene
- D. Bakelite
Explanation: Bakelite is a classic example of a thermosetting polymer. When heated, it undergoes a chemical reaction that makes it rigid and…
Correct answer: Bakelite- A. Linear and Branched
- B. Homopolymer and Copolymer
- C. Addition and Condensation
- D. Thermoplastic and Thermosetting
Explanation: W.H. Carothers classified polymerization processes into addition and condensation types.
Correct answer: Addition and Condensation- A. Condensation polymerization
- B. Step-growth polymerization
- C. Addition polymerization
- D. Ionic polymerization
Explanation: Addition polymerization is characterized by three key stages: initiation, where the reaction starts with the formation of active centers…
Correct answer: Addition polymerization- A. Butyl acrylate
- B. Acrylonitrile
- C. Methyl methacrylate
- D. Acrylic acid
Explanation: Acrylic fibers are primarily made from acrylonitrile, which is the main monomer due to its desirable properties such as durability and…
Correct answer: Acrylonitrile