Which gas is odourless?

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$HCl$

${CH}_{4}$

$O_{3}$

${NH}_{3}$

answer is A.

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Detailed Solution

${CH}_{4}$ gas is odourless.

Unscented, colorless, and combustible, methane is a gas. It is mostly used as fuel to produce heat and light. It is also employed in the production of organic compounds. Methane is frequently found in landfills, marshes, septic tanks, and sewers and can be produced as natural materials decompose.

Hence, the option A is correct.

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