Answer :
Final answer:
Nitrogen gas is commonly used for holding charges or as leak test gases may be released. It is preferred for these purposes because it is inert and does not react easily with other substances, making it safe to use.
Explanation:
The correct answer is (2).
The gas that is commonly used for holding charges or as leak test gases may be released is Nitrogen. Nitrogen gas is often preferred for these purposes because it is inert, meaning it does not react easily with other substances. This makes it safe to use and minimizes the risk of explosions or fires when working with volatile materials.
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