List of top Questions asked in AP EAPCET- 2022

The correct order about the number of unpaired electrons present in the following complexes is \[ [Fe(CN)_6]^{4-}\quad (I) \] \[ [Fe(H_2O)_6]^{2+}\quad (II) \] \[ [Co(H_2O)_6]^{2+}\quad (III) \]

Assertion (A): The aggregate of carboxylate ions of fatty acids forms a spherical shape.
Reason (R): Soap helps in emulsification and washing away of oils.

In the following reaction for the preparation of gold sol, \(a,\ b,\ c,\ x,\ y,\) and \(z\) are \[ aAuCl_3+bHCHO+cH_2O\rightarrow xAu(sol)+yHCO_2H+zHCl \]

Which of the following compound has reducing character?

The freezing point depression of a solution containing \(0.6\ \text{g}\) of urea \((\text{molar mass}=60\ \text{g mol}^{-1})\) in \(100\ \text{g}\) of benzene is in K \((K_f=4.0\ \text{K kg mol}^{-1})\):

In a first order reaction, the concentration of the reactant is reduced from \(0.6\ \text{mol L}^{-1}\) to \(0.2\ \text{mol L}^{-1}\) in \(5\) min. What is the rate constant of the reaction? \((\log 3=0.4771)\)

Which of the following molecular formula and type of defect are correct for the following statement? ``In FeO crystal, some \(Fe^{2+}\) ions are missing and the loss of positive charge is made up by the presence of \(Fe^{3+}\) ions.''

The standard Gibbs energy change for Daniell cell reaction is \[ Zn(s)+Cu^{2+}(aq)\rightarrow Zn^{2+}(aq)+Cu(s) \] \[ E^\circ_{\text{cell}}=1.1\ V \] Find the standard Gibbs energy change \((\Delta G^\circ)\).

A cubic lattice has atoms of A at the body centre, atoms of B at the corners of the cube and atoms C at all the face centres. What is its formula?

At \(298\ K\), vapour pressures of two pure liquids A and B are \(200\) and \(400\ \text{mm Hg}\) respectively. If mole fractions of A and B in solution are \(0.7\) and \(0.3\) respectively, what is the mole fraction of B in vapour phase?

Identify A, B, C, and D in the reactions (I), (II): \[ \text{(I)}\quad xCl_2+yNaOH \rightarrow A+B+H_2O(l) \] (cold, dil) \[ \text{(II)}\quad xCl_2+yNaOH \rightarrow C+D+H_2O(l) \] (hot, conc)

The major products \(P\) and \(Q\) of the following reactions respectively are: \[ \text{I.}\quad n\text{-Pentyl bromide}\xrightarrow{Zn/H^+}P \] \[ \text{II.}\quad n\text{-Pentyl bromide}\xrightarrow[\text{Dry Ether}]{Na}Q \]

\(Z\) is an aromatic compound with substituents \(P\) and \(Q\). What are \(P\) and \(Q\)?

The maximum covalency and highest oxidation state possible of an element with \(Z=13\) are respectively:

The hybridization of elements present in Fullerene and graphite are respectively:

Which of the following behaves as a Lewis acid?

\(1\ \text{L}\) of \(0.02\ \text{M}\) aqueous \(HCl\) is mixed with \(1\ \text{L}\) of \(0.01\ \text{M}\) aqueous \(H_2SO_4\) solution. Assuming complete dissociation and no change in the volume upon mixing, the pH of resultant solution is \((\log_{10}2=0.3)\):

Enthalpy of formation of \(CO(g)\), \(CO_2(g)\), \(N_2O(g)\) and \(N_2O_4(g)\) are \(-110\), \(-393\), \(81\), \(9.7\ \text{kJ mol}^{-1}\) respectively. Calculate \(\Delta_rH\) for the following reaction: \[ N_2O_4(g)+3CO(g)\rightarrow N_2O(g)+3CO_2(g) \]

The mass % of carbon in \(C_{57}H_{110}O_6\) is:

Identify the correct statements from the following:
(a) The ionic product of water at \(100^\circ C\) is \(\lt 10^{-14}\).
(b) pH of a solution decreases with increasing temperature.
(c) \(NaH_2PO_4\) on hydrolysis gives a basic solution.
(d) \(NH_3\) can act both as Bronsted acid and base.

The mass of hydrogen in grams present in \(1.0\ \text{L}\) of pure water of density \(1.0\ \text{g cm}^{-3}\) is:

For a reaction to be spontaneous, the required conditions are:

The successive ionization enthalpies of an element \(X\) in \(\text{kJ mol}^{-1}\) are \(1012,\ 1907,\ 2955,\ 4955,\ 6275\) and \(21260\) respectively, the element \(X\) is:

The number of \(sp^2\), \(sp^3\) hybridised carbons in cumene, respectively are:

The correct order of dipole moment of the molecules \(NH_3\) (I), \(BF_3\) (II), \(H_2O\) (III), \(NF_3\) (IV) is: