When phenolphthalein is added to vinegar, the solution becomes . . . . . . . .
A. Pink
B. blue
C. red
D. colourless
Answer: Option D
A. Pink
B. blue
C. red
D. colourless
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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