COMEDK 2024 Morning Shift

The boiling point of a \(4 \%\) aqueous solution of a non-volatile solute \(\mathrm{P}\) is equal to the boiling point of \(\mathrm{X} \%\) solution of another non-volatile solute \(\mathrm{Q}\).
The relation between their Molar masses is $...

\(\mathrm{K}_{\mathrm{H}}\) for \(\mathrm{O}_2\) at \(293 \mathrm{~K}\) is \(34.86 \mathrm{~kbar}\). What should be the partial pressure of \(\mathrm{O}_2\) gas so that it has a solubility of \(0.08 \mathrm{~g} / \mathrm{L}\) in water at $$...

What is the amount of ice that separates out on cooling a solution containing \(60 \mathrm{~g}\) of Ethylene glycol in \(250 \mathrm{~g}\) of water to \(-9.3^{\circ} \mathrm{C}\) ? \(\mathrm{K}_{\mathrm{f}}\) of $$\mathrm{H}_2 \mathrm{O}=1....

Above figure represents Vapour pressure versus Temperature graphs of 2 pure volatile liquids and a solution formed by the 2 liquids.
(i) Which curve represents the solution?
(ii) Which curve represents the liquid with the strongest intermo...

An inorganic salt comprises of atoms of elements \(\mathrm{A}, \mathrm{B}\) and \(\mathrm{C}\). If the oxidation numbers of A, B and \(\mathrm{C}\) are \(+3,+6\) and \(-\)2 respectively, what is the possible formula of the compound?

Choose the group of ions / molecules in which none of the species undergo Disproportionation reaction.

A given mass of a hydrocarbon on complete combustion produced \(176 \mathrm{~g}\) of \(\mathrm{CO}_2\) and \(90 \mathrm{~g}\) of \(\mathrm{H}_2 \mathrm{O}\). What is the Molecular formula of the compound?

The standard enthalpy of formation of \(\mathrm{CH}_4\), the standard enthalpy of sublimation of Carbon and the bond dissociation enthalpy of Hydrogen gas are \(-74.8,+719.6\) and \(436 \mathrm{~kJ} / \mathrm{mol}\) respectively. What is th...

If the enthalpy of formation of a diatomic molecule \(\mathrm{AB}\) is \(-400 \mathrm{~kJ} / \mathrm{mol}\) and the bond dissociation energies of \(\mathrm{A}_2\) and \(\mathrm{B}_2\) and \(\mathrm{AB}\) are in the ratio \(2: 1: 2\), what i...

Given: \(\Delta \mathrm{G}^0{ }_{\mathrm{f}}\) of \(\mathrm{C}_2 \mathrm{H}_2\) is \(2.09 \times 10^5 \mathrm{~J} / \mathrm{mol}\) and \(\Delta \mathrm{G}_{\mathrm{f}}^0\) of \(\mathrm{C}_6 \mathrm{H}_6\) is $$1.24 \times 10^5 \mathrm{~J} /...