Question

4. Do not bring any.......................
near hydrogen as the gas is explosive in nature.​

Answer 1

Answer:

Hydrogen safety covers the safe production, handling and use of hydrogen - particularly hydrogen gas fuel and liquid hydrogen. The main concern in working with hydrogen is flammability.

Hydrogen possesses the NFPA 704's highest rating of 4 on the flammability scale because it is flammable when mixed even in small amounts with ordinary air; ignition can occur at a volumetric ratio of hydrogen to air as low as 4% due to the oxygen in the air and the simplicity and chemical properties of the reaction. However, hydrogen has no rating for innate hazard for reactivity or toxicity. The storage and use of hydrogen poses unique challenges due to its ease of leaking as a gaseous fuel, low-energy ignition, wide range of combustible fuel-air mixtures, buoyancy, and its ability to embrittle metals that must be accounted for to ensure safe operation. Liquid hydrogen poses additional challenges due to its increased density and the extremely low temperatures needed to keep it in liquid form.

Answer 2

Explanation:

Hydrogen can explode only if it comes contact with oxygen. Gasoline and propane which are heavier gases than hydrogen are more likely to explode. Electric discharge from a storm , presence of highly flammable chemicals can lead to explosion of hydrogen gas.

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