1.

Why is sound heard with more intensity through \[C{{O}_{2}}\] than through the air?                                    [NDA]

A. Density of \[C{{O}_{2}}\] is more than that of air
B. Density of \[C{{O}_{2}}\] is less than that of air
C. Air is bad conductor of heat
D. \[C{{O}_{2}}\] is a compound, but air is a mixture of gases.
Answer» B. Density of \[C{{O}_{2}}\] is less than that of air


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