The ____ and oxygen released by a battery being charged form an explosive gas mixture that can be ignited by sparks or open flames.
A) carbon
B) nitrogen
C) hydrogen
D) helium
Correct Answer:
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Q10: The _ cell is structurally stronger and
Q11: In a _cell, the material giving electrons
Q12: The voltage derived from a cell depends
Q13: In low-current applications, such as the memory-retention
Q14: A battery is charged by forcing _
Q15: Electrons move from positive to negative in
Q17: A hydrometer measures the specific gravity of
Q18: A great many automobile batteries probably go
Q19: _ electrolyte membrane fuel cells offer high-power
Q20: The safest charging procedure is a _
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