List of top Questions asked in AP EAPCET- 2022

In a crystal lattice, anions A form hcp array. \(\dfrac{2}{3}\) of the tetrahedral voids are occupied by cations C. What is the formula of crystal?
Match the following

Which of the following salts form hydrates?
\[ CaCl_2 \qquad NaCl \qquad LiCl \qquad BaCl_2 \qquad KCl \] \[ I \qquad\quad II \qquad\quad III \qquad\quad IV \qquad\quad V \]
The general formula of zeolite is \(Na_2Z\). In this \(Z\) represents
Silicon (IV) chloride on hydrolysis gives an acid \(X\). The number of \(-OH\) groups present in \(X\) is
The IUPAC name of the following compound is
For which of the following \(+3\) oxidation state is highly oxidizing in character?
The density of methane is maximum under which conditions?
An airbag is inflated by \(N_2\) produced during rapid decomposition of \(NaN_3(s)\). What will be the pressure of the inflated airbag if 130 g of \(NaN_3\) is used? The volume of airbag is 10 L \((T=300\ K,\ R=0.082\ L\ atm\ K^{-1}\ mol^{-1})\)
Assertion (A): Molality of solution increases with temperature. Reason (R): Molality expression does not involve any volume term.
The atomization enthalpy of \(CH_4\) is \(1660\ \text{kJ mol}^{-1}\). The C-H bond enthalpy of each successive step in \[ CH_4 \rightarrow CH_3 \rightarrow CH_2 \rightarrow CH \rightarrow C \] are \(+15\), \(+30\) and \(+45\ \text{kJ mol}^{-1}\) higher than the mean bond enthalpy of C-H bonds, respectively. The bond enthalpy of the last C-H unit is
A \(1.0\ L\) aqueous solution contains \(1\times 10^{-8}\ M\ NaBr\), \(1\times 10^{-8}\ M\ NaCl\) and \(1\times 10^{-8}\ M\ NaI\). To this solution, \(1\times 10^{-10}\ M\) aqueous \(AgNO_3\) solution is added drop wise. The order of precipitation of \(AgX\), where \(X=Cl, Br, I\), is
\[ K_{sp}(AgCl)=1.8\times 10^{-10} \] \[ K_{sp}(AgBr)=5\times 10^{-13} \] \[ K_{sp}(AgI)=8.3\times 10^{-17} \]
The conjugate base of \(NH_3\) is
Identify the correct statements from the following
\[ \text{(I) } SnCl_2 \text{ is ionic, but } SnCl_4 \text{ is covalent in nature} \] \[ \text{(II) All linear diatomic molecules have zero dipole moment} \] \[ \text{(III) Both } NO \text{ and } O_2 \text{ are paramagnetic} \]
The correct order of atomic radii of the elements O, N, S and P is
The bond order of dioxygen is \(m\). The bond order values of \(N_2^{+}\) and \(C_2^{2-}\) are respectively
300 mL of a gas \(X\) of molar mass \(32\ \text{g mol}^{-1}\) is effused in 25 seconds. What volume of methane would effuse in the same time?
An element has \(d^5\) configuration. The total number of electron exchanges possible for it is
The correct electronic configuration of the element Au is
While passing through the applied magnetic field, which of the following undergoes the maximum deflection?
The class of materials having the largest band gap in the following is
A carrier wave of peak voltage \(60\,\text{V}\) is used to transmit a message signal. Then the peak voltage of the modulating signal in order to have a modulation index of \(90\%\) is
The following parameter is same for all hydrogen like atoms and ions in their ground state.
A metal has work function \(2.5\,\text{eV}\). If a radiation of frequency \(3.2\times10^{15}\,\text{Hz}\) is incident on this metal surface, then the maximum kinetic energy of ejected photoelectrons is \((h=6.6\times10^{-34}\,\text{J-s})\)
Light falls normally on a non-reflecting surface. If the average force exerted on a surface with area \(15\,\text{cm}^2\) during \(20\) minute time interval is \(10^{-6}\,\text{N}\), then energy flux of light is \((c=3\times10^8\,\text{m s}^{-1})\)