Urea-formaldehyde is used in the preparation of wrinkle-resistant fabrics, cotton blends, etc because:
A
urea-formaldehyde is a strong chemical
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B
urea-formaldehyde is a pervasive
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C
urea-formaldehyde is a heat-resistent
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D
all of the above
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Solution
The correct option is B urea-formaldehyde is a pervasive Urea-formaldehyde resins used in the preparation of wrinkle-resistant fabrics, cotton blends etc., because if wide spread and prevalent which is also called as pervasive.