Question:
Which of the following chemical is used for bleaching in processing of canes?
Which of the following chemical is used for bleaching in processing of canes?
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Canes + Bleaching = Sulphur. This process is distinct from paper pulping where chlorine is often used. For natural rattan furniture, sulphur fumes provide that classic light-yellow finish.
Updated On: Aug 7, 2026
- Potash
- Sulphur
- Chlorine
- Sodium
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Question:
The question refers to the post-harvest processing of canes (rattan). Bleaching is done to improve the aesthetic value and uniformity of the cane's color.
Detailed Explanation:
• Canes are non-timber forest products (NTFPs) widely used in furniture making.
• Freshly harvested canes often have a dull or greenish color.
• Bleaching is a critical step to achieve the desired golden-yellow color.
• The standard industrial practice involves "Sulphur fumigation."
• In this process, the canes are exposed to Sulphur dioxide fumes (generated by burning sulphur) in a closed chamber for 12 to 24 hours.
• This treatment not only bleaches the cane but also acts as a disinfectant against fungal and insect attacks.
Step 2: Final Answer:
Sulphur (specifically sulphur fumes) is the primary chemical used for bleaching and preserving canes.
The question refers to the post-harvest processing of canes (rattan). Bleaching is done to improve the aesthetic value and uniformity of the cane's color.
Detailed Explanation:
• Canes are non-timber forest products (NTFPs) widely used in furniture making.
• Freshly harvested canes often have a dull or greenish color.
• Bleaching is a critical step to achieve the desired golden-yellow color.
• The standard industrial practice involves "Sulphur fumigation."
• In this process, the canes are exposed to Sulphur dioxide fumes (generated by burning sulphur) in a closed chamber for 12 to 24 hours.
• This treatment not only bleaches the cane but also acts as a disinfectant against fungal and insect attacks.
Step 2: Final Answer:
Sulphur (specifically sulphur fumes) is the primary chemical used for bleaching and preserving canes.
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