A) Oxalic acid
B) Petrol
C) Alcohol
D) \[{{H}_{2}}{{O}_{2}}\]
Correct Answer: A
Solution :
Rust stains can be a challenge to remove because the stain consists of tiny iron oxide particles. Acidic solutions work best for these stains. The important ingredient in these removers is an acid - usually oxalic or hydrofluoric acid. The remover ingredients combine with the iron and loosen it from the fabric, then hold it in suspension in the wash water.
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