List of top Chemistry Questions on thermal properties of matter asked in AP EAMCET

What is $R_f$ of B in the following reaction?

Which of the following properties of $ {D}_2{O} $ is less when compared to $ {H}_2{O} $?

1 g of $ XY_2 $ is dissolved in 20 g of $ C_6H_6 $. The $ \Delta T_f $ of the resultant solution is 2.318 K. When 1 g of $ XY_4 $ is dissolved in 20 g of $ C_6H_6 $, its $ \Delta T_f $ is found to be 1.314 K. What are the atomic masses of X and Y respectively?
($ k_f $ of $ C_6H_6 $ is 5.1 K kg $ mol^{-1} $)