How many carbon and hydrogen atoms are there in propane?
A. 2, 6
B. 2, 4
C. 4, 7
D. 3, 8
Answer: Option D
A. 2, 6
B. 2, 4
C. 4, 7
D. 3, 8
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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