Which one of the major components of vinegar, is acid?
A. Nitric acid
B. Acetic acid
C. Formic acid
D. Oxalic acid
Answer: Option B
A. Nitric acid
B. Acetic acid
C. Formic acid
D. Oxalic acid
Answer: Option B
Traditional 'battery' contains which of the following chemicals?
A. Ethylene glycol
B. Sulphuric acid
C. Sodium bicarbonate
D. Ethanol
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