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# At 25$^{\large\circ}$C, 30 g of urea ($NH_2CONH_2$) is dissolved in 720 g of water. At 25$^{\large\circ}$C, the vapour pressure of pure water is 3173.06 Pa. After dissolving urea, the vapour pressure of water for this solution will be

3135 Pa
Hence (B) is the correct answer.