9
lesson pretestMultiple Choice

Pretest

Question 9 • Physical Science

Which substance is used to remove rust from metal?

Answer
A
ammonia open paren NH sub 3 close paren
B
lye NaOH
C
sulfuric acid open paren cap h sub 2 SO sub 4 close paren
D
hydrochloric acid HCl
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Which substance is used to remove rust from…