Why is sound heard with more intensity through CO<sub>2</sub> than through the air? Physics - Questions and Answers

Why is sound heard with more intensity through CO₂ than through the air?

(a)Density of CO₂ is more than that of air Right sign

(b)Density of CO₂ is less than that of air

(c)Air is a bad conductor of heat

(d)CO₂ is a compound but air is a mixture of gases

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