List of top Chemistry Questions asked in AP EAPCET

For the reaction $2A(g) + B(g) \rightarrow 2C(g)$, if $\Delta U^\circ = -8.80$ kJ mol$^{-1}$ and $\Delta S^\circ = -50$ J K$^{-1}$ mol$^{-1}$ at 300 K, the correct statement is:

At 300 K, one mole of a gas present in a 10 L flask exerted a pressure of 2.706 atm. What is its compressibility factor (Z)?

At T (K), equal weights of H$_2$, D$_2$, and T$_2$ are present in closed vessel. The pressure exerted by this gaseous mixture is P atm. The ratio of partial pressures of T$_2$, D$_2$ and H$_2$ is approximately (H, D and T are isotopes of hydrogen).

Which one of the following options is correct for \[ q = -ve, \, w = +ve \{ (where $q$ and $w$ are heat and work respectively)} \]

11.0 L of an ideal gas at constant external pressure of 5 atm is compressed isothermally to a final volume of one liter. The heat absorbed and work done respectively, during this compression (in L atm) are

Which of the following reaction is not feasible?

At T(K), the equilibrium constant for the reaction $ A (g) \rightleftharpoons B (g) $ is $ K_c $. If the reaction takes place in the following form $ 2A(g) \rightleftharpoons 2B(g) $, its equilibrium constant is $ K'_c $. The correct relationship between $ K_c $ and $ K'_c $ is:

The correct order of melting points of Al, Ga, In is:

The standard enthalpy of formation of $CO_2$(g), ${CaO(s)}$ and ${CaCO_3(s)}$ are -393, -634, -1210 kJ mol$^{-1}$ respectively. If all the substans are in standard state, the standard enthalpy of decomposition of calcium carbonate to ${CaO(s)}$ and ${CO_2(g)}$ (in kJ mol$^{-1}$) is

If the mean bond dissociation energies of C–C and C–H are 80 and 90 kJ mol$^{-1}$ respectively, the standard enthalpy of atomization of n-butane(g) (in kJ mol$^{-1}$) is

If 100 L of an ideal gas at a pressure of 2 atm is compressed isothermally and reversibly to a final volume of ‘X’ L releases -460.6 L atm heat, the final volume ‘X’ (in L) is

Identify the correct statements from the following
(A) The compressibility factor (Z) for an ideal gas is 1
(B) Uranium isotopes ($ ^{235}U $ and $ ^{238}U $) are separated by converting them into $ UF_6 $ vapours
(C) Decrease in temperature increases the kinetic energy of gas molecules

Given below are two statements Assertion (A): The enthalpy of formation of graphite is taken as zero. Reason (R): Graphite is thermodynamically most stable allotrope of carbon. The correct answer is

If the enthalpy and entropy change for a reaction at 298 K are -145 kJ mol$^{-1}$ and -650 J K$^{-1}$ mol$^{-1}$ respectively, which one of the following statements is correct?

The group present in prontosil is

The optically inactive compound from the following is:

Arrange the following in increasing order of their boiling points: