Paper and Pulp Industry Processes
Chemistry ⇒ Industrial Chemistry
Paper and Pulp Industry Processes starts at 12 and continues till grade 12.
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Describe the function of fillers in paper manufacturing.
Describe the main difference between mechanical pulping and chemical pulping.
Describe the main steps involved in the Kraft process for paper production.
Describe the role of hemicellulose in the paper and pulp industry.
Explain the environmental impact of chlorine-based bleaching in the paper industry.
Explain the significance of pH control during the pulping process.
Explain the term 'recycled paper' in the context of the paper and pulp industry.
A paper mill produces 1000 kg of pulp per day. If the yield of the Kraft process is 50%, how much wood (in kg) is required per day?
The pH of the cooking liquor in the Kraft process is typically (1) Acidic, (2) Neutral, (3) Alkaline, (4) Slightly acidic
The yield of pulp from wood is highest in which process? (1) Mechanical pulping, (2) Kraft process, (3) Sulfite process, (4) Semi-chemical pulping
Which chemical is commonly used as a bleaching agent in the paper industry? (1) Sodium hypochlorite, (2) Calcium carbonate, (3) Sodium chloride, (4) Potassium nitrate
Which of the following is a common additive used to improve paper brightness? (1) Titanium dioxide, (2) Sodium chloride, (3) Calcium sulfate, (4) Iron oxide
Fill in the blank: The main component of paper is ________.
Fill in the blank: The process of converting wood chips into pulp using only mechanical means is called ________ pulping.
The chemical formula for sodium hydroxide is ________.
The Kraft process uses a mixture of sodium hydroxide and ________ as the main chemicals.
True or False: Black liquor is a waste product that contains lignin, hemicellulose, and inorganic chemicals.
True or False: The Kraft process is also known as the sulfate process.
True or False: The Kraft process produces a higher yield of pulp than mechanical pulping.
True or False: The paper and pulp industry is a significant consumer of water resources.
