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Two vessels separately contain two ideal gases A and B at the same temperature. The pressure of A being twice that of B. Under such conditions, the density of A is found to be 1.5 times the density of B. The ratio of molecular weight of A and B is :
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- 3/4
- 2
- 1/2
- 2/3
Correct Option: A
From PV = nRT
| PA = | and PB = | ||
| RT | RT |
From question,
| = | = | = 2 | = | ||||||
| PB | ρB | MB | MB | 2 |
| So, | - | ||
| MB | 4 |
