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CBSE Class 12 Textile Chemical Processing Sample Question Papers 2027

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Frequently Asked Questions

What is the significance of pre-treatment in textile processing?

Pre-treatment prepares fabrics for further processing by removing impurities like oils or dirt. This step is crucial for ensuring uniform dye uptake and overall fabric quality.

How does bleaching affect textiles?

Bleaching removes natural colours from fibres using chemicals like hydrogen peroxide or chlorine compounds. This creates a neutral base for subsequent dyeing or printing.

What are eco-friendly practices in textile chemical processing?

Eco-friendly practices include using biodegradable chemicals, recycling water, reducing energy consumption, and minimising waste to lessen environmental impact.

Why is pH control important in textile processing?

Maintaining proper pH levels ensures optimal chemical reactions during processes like dyeing and finishing. Incorrect pH can lead to poor results or damage to fabrics.

What is mercerisation in textiles?

Mercerisation involves treating cotton with caustic soda under tension to increase lustre, strength, and dye affinity. It enhances fabric quality significantly.