List of top Chemistry Questions on Physical Chemistry asked in TS EAMCET

A solid contains elements A and B. Anions of B form ccp lattice. Cations of A occupy 50% of octahedral voids and 50% of tetrahedral voids. What is the molecular formula of the solid?

At 1000 K, the equilibrium constant for the reaction
\(\text{CO}_2(\text{g}) + \text{H}_2(\text{g}) \rightleftharpoons \text{CO}(\text{g}) + \text{H}_2\text{O}(\text{g})\) is 0.53. In a one litre vessel, at equilibrium the mixture contains 0.25 mole of CO, 0.5 mole of \(\text{CO}_2\), 0.6 mole of \(\text{H}_2\) and \(x\) moles of \(\text{H}_2\text{O}\). The value of \(x\) is

One mole of an ideal gas at 300 K and 20 atm expands to 2 atm under isothermal and reversible conditions. The work done by the gas is \(-x\ \text{kJ mol}^{-1}\). The value of \(x\) is
\((R=8.3\ \text{J K}^{-1}\ \text{mol}^{-1})\)

If the number of moles of \(\text{Fe}^{2+}\) ions oxidized by one mole of acidified \(\text{MnO}_4^-\) is \(x\), the number of moles of \(\text{Fe}^{2+}\) ions oxidized by one mole of acidified \(\text{Cr}_2\text{O}_7^{2-}\) is

Two vessels are filled with ideal gases A and B and are connected through a pipe of zero volume as shown in figure. The stop cock is opened and the gases are allowed to mix homogeneously and the temperature is kept constant. The partial pressures of A and B respectively (in atm) are

Observe the following list of molecules. Number of polar and non polar molecules are respectively
\(\text{NH}_3, \text{BF}_3, \text{NF}_3, \text{H}_2\text{S}, \text{CO}_2, \text{CH}_4, \text{CHCl}_3, \text{H}_2\text{O}\)

Which of the following is not correct about Freundlich adsorption isotherm?

Observe the following statements.
Statement - I: The boiling point of 0.1 M urea solution is less than that of 0.1 M KCl solution.
Statement - II: Elevation of boiling point is inversely proportional to molar mass of solute.
The correct answer is

For the reaction \( R \to P \), half life is independent of initial concentration of the reactant, R. Which one of the following graphs is not correct for this reaction?

At 298 K, if emf of the cell corresponding to the reaction, \( \text{Zn(s)} + 2\text{H}^+ \text{(aq)} \to \text{Zn}^{2+} (0.01 \text{ M}) + \text{H}_2 \text{(g)} \) (1 atm) is 0.28 V, then the pH of the solution at the hydrogen electrode is \( \left( \frac{2.303 RT}{F} = 0.06 \text{ V} \right) \), \( E^0_{\text{Zn}^{2+}|\text{Zn}} = -0.76 \text{ V} \)

A substance has a density of \( 2 \, \text{g cm}^{-3} \). It crystallizes in the fcc crystal with an edge length of 600 pm. The molar mass of the substance (in \( \text{g mol}^{-1} \)) is (\( N_A = 6 \times 10^{23} \, \text{mol}^{-1} \))

For the reaction \( \text{N}_2\text{O}_4(g) \rightleftharpoons 2\text{NO}_2(g) \), the correct relation between degree of dissociation (\(\alpha\)) of \( \text{N}_2\text{O}_4(g) \) and equilibrium constant, \( K_p \) is (P = total pressure of mixture)

The RMS velocity of dihydrogen is \( \sqrt{7} \) times more than that of dinitrogen. If \( T_{\text{H}_2} \) and \( T_{\text{N}_2} \) are the temperatures of dihydrogen and dinitrogen, then the correct relationship between them is