List of top Chemistry Questions on Colligative Properties asked in AP EAMCET

At 300 K, 6 g of urea was dissolved in 500 mL of water. What is the osmotic pressure (in atm) of the resultant solution? (R = 0.082 L atm K$^{-1}$ mol$^{-1}$) (C=12;N=14;O=16;H=1)
Benzoic acid undergoes dimerization in benzene. \( x \) g of benzoic acid (molar mass 122 g mol\(^{-1}\)) is dissolved in 49 g of benzene. The depression in freezing point is 1.12 K. If degree of association of acid is 88%, what is the value of \( x \)? (K\(_f\) for benzene = 4.9 K kg mol\(^{-1}\))
At \(T(K)\), \(x\) g of a non-volatile solid (molar mass \(78\ \mathrm{g\ mol^{-1}}\)) when added to \(0.5\) kg water, lowered its freezing point by \(1.0^\circ C\). What is \(x\) (in g)?
\[ K_f \text{ of water at } T(K)=1.86\ \mathrm{K\ kg\ mol^{-1}} \]