What is the chemical formula of propane?
A. C3H8
B. C5H10
C. CH2
D. C2H6
Answer: Option A
A. C3H8
B. C5H10
C. CH2
D. C2H6
Answer: Option A
Traditional 'battery' contains which of the following chemicals?
A. Ethylene glycol
B. Sulphuric acid
C. Sodium bicarbonate
D. Ethanol
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