Which acid is found in orange?
A. Acetic acid
B. Tartaric acid
C. Salicylic acid
D. Citric acid
Answer: Option D
A. Acetic acid
B. Tartaric acid
C. Salicylic acid
D. Citric acid
Answer: Option D
Traditional 'battery' contains which of the following chemicals?
A. Ethylene glycol
B. Sulphuric acid
C. Sodium bicarbonate
D. Ethanol
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