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Q. |
Which of the following produces H2 gas, when reacts with acid? |
A. | Zn |
B. | S |
C. | C |
D. | O |
Answer» A. Zn | |
Explanation: As, Zinc is a metal so it will produce H2 gas when reacts with acid. Active metals react with acids to produce hydrogen because they are above hydrogen in the activity series. |
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