Question

how will you prepare hydrogen gas in labotatory? state three precautions necessary for the collection of hydrogen​

Answer 1

Answer:

Put a lighted splint in it and when you will hear a pop sound hydrogen gas will be made.

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Answer 2

Answer:

the answer is

Explanation:

Precautions in laboratory preparation of hydrogen gas.

• Apparatus should be use tight.
• Allow the first few bubbles of hydrogen gas to escape, as they not only contain air, but also form an explosive mixture.
• Don't bring any naked flame near the apparatus.

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