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 4 of 15
- A. Normal growth of plant
- B. Protein synthesis
- C. Nucleic acid synthesis
- D. All of above
Explanation: Therefore, all options are correct, making option D the correct choice.
Correct answer: All of above- A. Nitrogenous fertilizers
- B. Micronutrients
- C. Macronutrients
- D. Surfactants
Explanation: Micronutrients are essential elements required by plants in small quantities for growth and development, including iron, zinc, copper…
Correct answer: Micronutrients- A. B
- B. Ca
- C. S
- D. H
Explanation: Boron is not considered a macronutrient. It is classified as a micronutrient required by plants in small quantities.
Correct answer: B- A. Fe
- B. Mn
- C. Cu
- D. H
Explanation: Hydrogen is not considered a micronutrient. It is abundant in water and organic compounds and is obtained by plants without the need for…
Correct answer: H- A. Lime stone
- B. Marine shell
- C. Clay
- D. Marble
Explanation: Calcareous materials are those that contain calcium carbonate (CaCO3) or are derived from it.
Correct answer: Clay- A. Lime stone
- B. Clay
- C. Slate
- D. None
Explanation: Limestone is not an argillaceous material. It is primarily composed of calcium carbonate (CaCO3) and does not contain significant amounts…
Correct answer: Lime stone- A. 33 - 33.5%
- B. 30 - 33.5%
- C. 30 - 32.5%
- D. 31 - 32%
Explanation: Ammonium nitrate (NH4NO3) contains approximately 33 - 33.5% nitrogen by weight.
Correct answer: 33 - 33.5%- A. Heating lime stone
- B. Heating of clinker
- C. Drying of slurry
- D. Preparation of clinker
Explanation: Rotary kilns are primarily used for the preparation of clinker, which is a key intermediate product in the production of cement.
Correct answer: Preparation of clinker- A. Kraft process
- B. Sulphite process
- C. Neutral sulphite semi chemical process (NSSC)
- D. None
Explanation: The Kraft process is indeed an alkaline process used in the production of wood pulp.
Correct answer: Kraft process- A. 48%
- B. 38%
- C. 68%
- D. 75%
Explanation: DAP (Diammonium phosphate) typically contains around 48% P2O5. This means that for every 100 grams of DAP, approximately 48 grams is P2O5.
Correct answer: 48%- A. Lime
- B. Clay
- C. Na2O
- D. Alumina
Explanation: Lime, also known as calcium oxide (CaO), is present in the highest percentage in cement.
Correct answer: Lime- A. Urea
- B. KNO3
- C. DAP
- D. K2SO4
Explanation: Urea is the most widely used fertilizer in Pakistan. It is a nitrogenous fertilizer containing a high concentration of nitrogen, which is…
Correct answer: Urea- A. DAP
- B. TAP
- C. Urea
- D. NH4NO3
Explanation: DAP typically contains around 18% nitrogen (N) and 46% phosphorus pentoxide (P2O5).
Correct answer: DAP- A. Bamboo
- B. Poplar
- C. Bagasse
- D. Wheat straw
Explanation: Poplar is a type of tree that falls under the category of woody materials.
Correct answer: Poplar- A. Screening
- B. Bleaching
- C. Digestion
- D. Stock preparation
Explanation: Digestion is the main process in the paper industry where wood chips or other raw materials are cooked in a chemical solution, typically…
Correct answer: Digestion- A. O2
- B. O3
- C. ClO2
- D. Cl2
Explanation: Chlorine dioxide (ClO2) is widely used for bleaching pulp in the paper industry in Pakistan and around the world.
Correct answer: ClO2- A. 4 - 10 g
- B. 6 - 200 kg
- C. 6 - 200 g
- D. None of above
Explanation: Micronutrient requirements for soil fertility typically range from 6 to 200 grams per acre.
Correct answer: 6 - 200 g- A. Papyrus
- B. Rose
- C. Acacia
- D. Papaya
Explanation: The word "paper" is indeed derived from the reedy plant called papyrus.
Correct answer: Papyrus- A. Eucalyptus
- B. Wheat straw
- C. Bagasse
- D. Cotton linter
Explanation: Eucalyptus trees are commonly used as a woody raw material for making pulp and paper due to their fast growth, high cellulose content, and…
Correct answer: Eucalyptus- A. DAP
- B. Ammonium sulphate
- C. Urea
- D. Ammonium nitrate
Explanation: Ammonium nitrate is not typically used as a fertilizer for paddy rice because it contains a high percentage of nitrogen in its nitrate…
Correct answer: Ammonium nitrate