COMEDK 2023 Evening Shift

Para and ortho hydrogen differ in:

The group number of the element in the periodic table with the electronic configuration \((\mathrm{n}-1) \mathrm{d}^2 \mathrm{~ns}^2\).
For \(n=4\) is:

In neutral medium \(\mathrm{KMnO}_4\) oxidises \(\mathrm{MnSO}_4\) to _________

In the given Redox equation, identify the stoichiometric coefficients \(\mathrm{w}, \mathrm{x}, \mathrm{y}\) and \(\mathrm{z}\).
$$\mathrm{ClO}_3^{-1}+\mathrm{w} \mathrm{Cl}^{-1}+\mathrm{xH}^{+} \rightarrow \mathrm{y} \mathrm{H}_2 \mathrm{O...

Identify the catalyst used in the reaction between Iodide and persulphate ions.
\(2 \mathrm{I}^{-}+\mathrm{S}_2 \mathrm{O}_8{ }^{2-} \rightarrow \mathrm{I}_2+2 \mathrm{SO}_4{ }^{2-}\)

Choose the incorrect statement.

\(\mathrm{Mg}(\mathrm{OH})_2\) is used as an antacid. If a person, suffering from acidity, produces \(2.5 \mathrm{~L}\) of Gastric juice in a day, approximately how many antacid tablets, each containing \(600 \mathrm{~mg}\) of $$\mathrm{Mg}...

\(5.8 \mathrm{~g}\) of a gas maintained at \(95^{\circ} \mathrm{C}\) occupies the same volume as \(0.368 \mathrm{~g}\) of hydrogen gas maintained at a temperature of \(17^{\circ} \mathrm{C}\) and pressure being the same atmospheric pressure...

Gaseous Nitrous oxide decomposes at \(298 \mathrm{~K}\) to form Nitrogen gas and Oxygen gas. The \(\Delta \mathbf{H}\) for the reaction at \(1.0 \mathrm{~atm}\) pressure and \(298 \mathrm{~K}\) is \(\mathbf{- 1 6 3 . 1 5} \mathbf{~ k J}\). ...

A Gas taken in a closed vessel is heated from \(54^{\circ} \mathrm{C}\) to \(1254^{\circ} \mathrm{C}\). The pressure of the gas becomes ___________ times its original pressure \(\mathrm{P_1}\)