The density of a gas A is twice that of a gas \( B \) at the same temperature. The molecular wei...

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The density of a gas A is twice that of a gas \( B \) at the same temperature. The molecular weight of gas \( B \) is thrice that of \( A \). The ratio of the pressures acting on \( \mathrm{A} \) and \( \mathrm{B} \) will be
(A) \( 1: 4 \)
(B) \( 2: 5 \)
(C) \( 7: 8 \)
(D) \( 1: 6 \)
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