COMEDK 2024 Evening Shift

Given that the freezing point of benzene is \(5.48^{\circ} \mathrm{C}\) and its \(\mathrm{K}_{\mathrm{f}}\) value is \(5.12{ }^{\circ} \mathrm{C} / \mathrm{m}\). What would be the freezing point of a solution of \(20 \mathrm{~g}\) of propan...

Study the graph between partial pressure and mole fraction of some gases and arrange the gases P, Q, R and S dissolved in H\(_2\)O, in the decreasing order of their KH values.

With reference to Pauling's Electronegativity scale, which one of the following options shows the correct order of electronegativity values of elements?

In the estimation of element \(\mathrm{X}\) in an organic compound, \(0.8 \mathrm{~g}\) of the compound containing \(\mathrm{X}\) was heated with fuming \(\mathrm{HNO}_3\) and the cooled product was treated with barium chloride. The mass of...

In the redox reaction between \(\mathrm{Cr}_2 \mathrm{O}_7^{2-} / \mathrm{H}^{+}\) and sulphite ion, what is the number of moles of electrons involved in producing 3.0 moles of the oxidised product?

Sulphuric acid used in Lead Storage battery has a concentration of \(4.5 \mathrm{~M}\) and a density of \(1.28 \mathrm{~g} / \mathrm{~ml}\). The molality of the acid is __________.

What mass of Silver chloride, in grams, gets precipitated when \(150 \mathrm{~ml}\) of \(32 \%\) solution of Silver nitrate is reacted with \(150 \mathrm{ml}\) of \(11 \%\) Sodium chloride solution? Atomic mass in $$\mathrm{g} / \mathrm{mol...

Given :
$$
\begin{gathered}
\Delta \mathrm{H}^0 \mathrm{f}_{\text {of }} \mathrm{CO}_2(\mathrm{~g})=-393.5 \mathrm{~kJ} / \mathrm{mol} \\
\Delta \mathrm{H}^0{ }_{\mathrm{f}} \text { of } \mathrm{H}_2 \mathrm{O}(\mathrm{l})=-286 \mathrm{~kJ}...

The Enthalpy of combustion of \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{COOH}(\mathrm{s})\) at \(25^{\circ} \mathrm{c}\) and 1.0 atm pressure is \(-2546 \mathrm{~kJ} / \mathrm{mol}\). What is the Internal energy change for this reaction?

5.0 moles of an Ideal gas at 3.0 atm pressure and \(27^{\circ} \mathrm{C}\) is compressed isothermally to half its volume by application of an external pressure of \(3.5 \mathrm{~atm}\). What is the amount of work done (in joules) on the ga...