Which acid is found in curd?
A. citric acid
B. lactic acid
C. tartaric acid
D. acetic acid
Answer: Option B
A. citric acid
B. lactic acid
C. tartaric acid
D. acetic 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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