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 3 of 15
- A. 4
- B. 3
- C. 2
- D. 5
Explanation: In a cement rotary kiln, the charge passes through four functional zones: drying or preheating, calcination, burning or clinkering, and…
Correct answer: 4- A. dry process
- B. wet process
- C. both
- D. none
Explanation: Cement can be manufactured by either the dry process, in which dry raw materials are ground and fed to the kiln, or the wet process, in…
Correct answer: both- A. lime stone
- B. marble
- C. chalk
- D. all of the above
Explanation: Calcareous materials are rich in calcium carbonate, CaCO3. Limestone, marble and chalk all contain mainly calcium carbonate, although…
Correct answer: all of the above- A. prilling
- B. evaporation
- C. condensation
- D. crystallization
Explanation: In a prilling tower, molten urea is sprayed from the top and cooled by an upward air current.
Correct answer: prilling- A. straight
- B. compound
- C. both a and b
- D. none of the above
Explanation: A straight fertilizer supplies mainly one primary plant nutrient, such as nitrogen, phosphorus or potassium.
Correct answer: straight- A. Rotation of the crops
- B. Adding lime to the acid salts
- C. Adding manure and growing legumes
- D. All
Explanation: Crop rotation prevents continuous depletion of the same nutrients, lime neutralizes acidic soil, and manure adds organic matter and…
Correct answer: All- A. Acrylic acid
- B. Epichlorohydrin
- C. Vinyl chloride
- D. Adipic acid with hexamethylene diamine
Explanation: Nylon-6,6 is made by condensation polymerization of adipic acid with hexamethylene diamine, producing polyamide chains and water.
Correct answer: Adipic acid with hexamethylene diamine- A. Dihydric alcohol and dicarboxylic aromatic acids
- B. Polyamines with aliphatic dicarboxylic acids
- C. Styrene in the presence of catalyst
- D. Epichlorohydrin with diphenylol propane
Explanation: Polyester resins form by condensation between a dihydric alcohol and a dicarboxylic acid, commonly an aromatic acid, producing ester…
Correct answer: Dihydric alcohol and dicarboxylic aromatic acids- A. Copolymer
- B. Terpolymer
- C. Homopolymer
- D. Biopolymer
Explanation: A terpolymer is formed when three different monomers are incorporated into one polymer.
Correct answer: Terpolymer- A. Strecker
- B. Sabatier
- C. Runge
- D. W. H. Carothers
Explanation: W. H. Carothers classified polymerization into addition polymerization and condensation polymerization, based on how monomers join and…
Correct answer: W. H. Carothers- A. Polyester resins
- B. Epoxy paints
- C. Polyamide resins
- D. Polyvinyl chloride
Explanation: Epoxy paints are used to coat industrial materials and thermal power-station equipment because cured epoxy polymers adhere strongly and…
Correct answer: Epoxy paints- A. Vinyl chloride
- B. Styrene
- C. Methylmethacrylate
- D. Hexamethylenediamine
Explanation: Methyl methacrylate is the important monomer of acrylic resins and polymerizes to form polymethyl methacrylate.
Correct answer: Methylmethacrylate53. Polymers described as large molecules built up from small repeating units called________________?
- A. Biopolymers
- B. Dimers
- C. Monomers
- D. metamers
Explanation: Polymers are very large molecules made by repeatedly joining small molecules called monomers, so monomer is the correct term for the…
Correct answer: Monomers- A. iron
- B. fertilizer
- C. paper
- D. none
Explanation: Iron, fertiliser and paper manufacture all involve large-scale plants, substantial raw materials and high energy use, so each is commonly…
Correct answer: none- A. 2
- B. 3
- C. 4
- D. 5
Explanation: Paper fibres become shorter and weaker each time they are pulped, so newspaper is commonly stated in textbook questions to be recyclable…
Correct answer: 5- A. carboxylic acids
- B. ketones
- C. aldehydes
- D. polymers
Explanation: Polymers are very large organic molecules formed by joining many repeating monomer units, so they have high molecular masses.
Correct answer: polymers- A. Polyester resins
- B. Epoxy paints
- C. polyamide resins
- D. Polyvinyl chloride
Explanation: Epoxy paints contain epoxy resins, cross-linked polymers that adhere strongly and resist heat, chemicals and moisture.
Correct answer: Epoxy paints- A. Teflon
- B. asbestos
- C. saran
- D. acrylic
Explanation: Asbestos is a naturally occurring fibrous silicate mineral and is therefore classified as a mineral fibre.
Correct answer: asbestos- A. Chlorine
- B. Cellulose
- C. Sodium hydroxide
- D. Lignin
Explanation: Lignin is the correct answer because it is a complex polymer found in the cell walls of plants, especially in wood, and it provides…
Correct answer: Lignin- A. N, P, S
- B. N, P, C
- C. N, P, K
- D. N, P, H
Explanation: Nitrogen (N) is essential for chlorophyll, protein, and nucleic acid formation.Phosphorus (P) is necessary for energy transfer and cell…
Correct answer: N, P, K