Question

During the preparation of hydrogen, great care must be taken to ensure that all the air has been
displaced from the apparatus because
[ ]
1) A mixture of hydrogen and air is highly inactive
2) A mixture of hydrogen and air is highly non reactive
3) A mixture of hydrogen and air is highly explosive
4) All the above​

Answer 1

Answer:

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Answer 2

During the preparation of hydrogen, great care must be taken to ensure that all the air has been displaced from the apparatus because a mixture of hydrogen and air is highly explosive. (Option 3)

• Before using the device to collect hydrogen gas, take steps to guarantee that all of the air inside the apparatus has been displaced. This is because hydrogen gas interacts violently with air.
• Hydrogen gas is a colorless gas with no distinguishable odor. In water, this gas is very slightly soluble.
• Any temperature variations have little effect on the solubility of this gas in water.
• The following are some of the applications for hydrogen gas.

1. Many balloons and airships are filled with this gas.
2. It's also employed in the stiffening of animal and vegetable oils.
3. In oxy-hydrogen blowpipes, hydrogen gas is commonly utilized as a fuel.