Which of the following contains the highest amount of citric acid?
A. Banana
B. Grapes
C. Lemon
D. Mango
Answer: Option C
A. Banana
B. Grapes
C. Lemon
D. Mango
Answer: Option C
Traditional 'battery' contains which of the following chemicals?
A. Ethylene glycol
B. Sulphuric acid
C. Sodium bicarbonate
D. Ethanol
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