The given structure HOCH\(_2\)(CH\(_2\))\(_3\)CH\(_2\)COCH\(_3\) has a hydroxyl group at position 7 and a ketone group at position 2 on the 7-carbon chain. Therefore, the IUPAC name is 7-hydroxyheptan-2-one.
Thus, the correct answer is (B).
The vapour pressure of H\(_2\)O at 323K is 95 mm of Hg. 176g of sucrose (Molar mass = 342 gmol\(^{-1}\)) is added to 900g of H\(_2\)O at 323K.
The vapour pressure of solution is about
Kepler's second law (law of areas) of planetary motion leads to law of conservation of