Q 11-12-012NEETJEE MainEAMCET 2007 (Engineering)Easy
Two gases A and B having the same pressure $P$, volume $V$ and absolute temperature $T$ are mixed. If the mixture has the volume $V$ and temperature $T$ respectively, then the pressure of the mixture is
Answer: (A) $2P$
Concept. Dalton's law: partial pressures add.
Step 1. Each gas. Alone in $V$ at $T$, each exerts $P$.
Step 2. Mixture. $P + P = 2P$.
Answer. $2P$ (Option A).
Solution by Sreeraj P, M.Sc Physics