COMEDK 2023 Morning Shift

In dilute alkaline solution \(\mathrm{MnO}_4^{-}\) changes to

Which defect leads to decrease in the density of crystal?

In a normal spinel type structure, the oxide ions are arranged in ccp, whereas \(1 / 8\) tetrahedral holes are occupied by \(\mathrm{Zn}^{2+}\) ions and \(50 \%\) of octahedral holes are occupied by \(\mathrm{Fe}^{3+}\) ions. The formula of...

\(\mathrm{NaCl}\) has face centred structure with edge length equal to \(361 \mathrm{~pm}\). The radius is

\(15 \mathrm{~g}\) of \(\mathrm{CaCO}_3\) completely reacts with

The behaviour of real gas approaches ideal behaviour at

The ratio of average velocity of a gas molecule to the root mean square velocity at a particular temperature is

Which of the following is not true?

If 2 moles of \(\mathrm{C}_6 \mathrm{H}_6(\mathrm{~g})\) are completely burnt \(4100 \mathrm{~kJ}\) of heat is liberated. If \(\Delta H^{\circ}\) for \(\mathrm{CO}_2(\mathrm{~g})\) and \(\mathrm{H}_2 \mathrm{O}(l)\) are \(-410\) and $$-285 ...

For an adiabatic change in a system, the condition which is applicable is