Which of the following bleaching agents is largely used for bleaching of pulp, in Pakistan:
Correct answer: C. ClO2
- 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. It is preferred because it is an effective bleaching agent that produces fewer harmful byproducts compared to chlorine (Cl2) bleaching.
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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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