2 Answers

Dfarrelly · Answer 1 · 2022-11-17T13:35:30+0000

B ) Hydrogen

as O2 helps in combustion and Fuel is the one which is going to combust and heat is required to bring fuel to the combustion temperature

AVerguno · Answer 2 · 2022-11-20T12:06:22+0000

Which of the following is NOT a requirement for combustion to occur?

A. Fuel

B. Hydrogen

C. Heat

D. Oxygen

Answer:-
$\bold \pink{hydrogen}$

The four elements are oxygen for sustaining combustion, enough heat for raising the material to the ignition temperature, combustible material or fuel, and a subsequent exothermic chain reaction in the material.

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