Discussion
Arrange the usual sequence of cotton preparation in order.
1. scouring to remove natural impurities
2. singeing of the surface fibres
3. bleaching to develop the whiteness
4. desizing to remove the warp size
Answer: D
Size must go before scouring or it would set on the fabric, and scouring must precede bleaching so the bleach is not wasted on waxes and pectins. The order is the standard preparation sequence. Reversing any pair causes trouble downstream.
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