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Subjects
Science State Board
Class 8
Acids and bases
Properties and applications of acids, bases
5.
Acids and bases: choose the correct answer
Exercise condition:
4
m.
1
.
Tanya observes some neutralization processes in acid industries before mixing the waste into water bodies. What kind of solution is added to the wastes?
Acid
Base
Salt
Water
2
.
Acids react with active metals and release gas. What is that gas?
Hydrogen
Nitrogen
Oxygen
Carbon dioxide
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