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Physical Science
Pretest
Question 9
9
lesson pretest
Multiple Choice
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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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