neon and hydrogen
nitrogen and helium
helium and neon
neon and nitrogen
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Helium is a very light gas used in filling baloons which is in no way inflammable...therefore, option B & C are out, now for option D, we have an Element there N(nitrogen) which is the chief diluent of Air and also not inflammable..

For a gas to burn, you need a fuel and something to support the burning (usually oxygen, but in some cases, other substances).
* Neon (Ne), Nitrogen (Nβ), and Helium (He) are all noble gases or nitrogen. They are very unreactive and don't burn.
* **Hydrogen (Hβ) **is a very flammable gas. It burns easily.
So, the only mixture that contains a flammable gas is A. neon and hydrogen.
Therefore, the correct answer is A.

This question is wrongly compiled. The question has two answers in the sense that both helium, hydrogen and neon all burn with flames. Hence if they meant gases that burn with flames, the question has three answers
Still, if they meant gases that burn in flames,then the correct answer is nitrogen and helium
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