List of top Questions asked in AP EAPCET- 2022

What is the molar conductivity of \(CH_3CO_2H\) at infinite dilution?
Given that, \[ \lambda_m^\circ\left((CH_3CO_2)_2Ba\right)=x_1\ S\ cm^2\ mol^{-1} \] \[ \lambda_m^\circ(BaCl_2)=x_2\ S\ cm^2\ mol^{-1} \] \[ \lambda_m^\circ(HCl)=x_3\ S\ cm^2\ mol^{-1} \]
A few grams of sodium carbonate is added to \(1\ L\) of water. What is the pH or pH range of the solution?
The IUPAC name of the following compound is
An unsaturated organic compound, \(X\), on reaction with hot, acidified \(KMnO_4\) gives succinic acid. What is \(X\)?
Borax dissolves in water and forms a product of boron \((X)\). Identify the compound \(X\).
The number of six membered carbon rings and five membered carbon rings present in Buckminsterfullerene are \(x\) and \(y\) respectively. The sum of \(x\) and \(y\) is:
\(CaCO_3\) was reacted with dil HCl to form three products. One of the products formed, when passed into slaked lime gave \(X\). What is \(X\)?
For ammonia formation from constituent elements, the expression for \(K_c\) is
From the following data at \(25^\circ C\), calculate \(\Delta_rH^\circ\) for \(H_2O(g)\longrightarrow 2H(g)+O(g)\).
Identify the direction/process in which the entropy decreases
The conjugate base of \(H_3O^+\) is
What is the atomic mass of Fe?
Given abundance of \[ {}^{54}_{26}Fe = 10\% \] \[ {}^{56}_{26}Fe = 85\% \] \[ {}^{57}_{26}Fe = 5\% \]
Which of the following reaction is not an example of hydrolysis reaction?
In which of the following the elements are in correct order of their chemical reactivity in terms of oxidizing property?
Match the following
Identify the pair of species with same geometries
If two gases \(CH_4\) and \(SO_2\), are allowed to enter from the two ends of a 1 km long vacuum tube at the same time, where will the gases meet from the \(CH_4\) end?
The set of amphoteric oxides among \(ZnO, Tl_2O_3, In_2O_3, B_2O_3, PbO, SnO_2\) is
If \(50\%\) of \(1\ M\ Na_2SO_4\) is dissociated in aqueous solution of density \(1.2\ g\ mL^{-1}\), what is the molality of \(Na^+\) ions in the solution?
The value of work function of a metal \(X\) is \(3.1\ \text{eV}\). The threshold frequency of it (in Hz) is
\[ (h=6.62\times 10^{-34}\ \text{Js}) \]
The wavelength of the electron in the ground state of hydrogen atom is \(y \, \text{\AA}\). What is the wavelength of the electron in the fourth orbit of \(He^+\) ion (in )?
The shortest wavelength in the Paschen series of the Hydrogen spectrum is
\[ \text{Rydberg constant of hydrogen }=1.097\times 10^7\ \text{m}^{-1} \]
The half life of a radioactive nuclide is
A message signal of frequency \(8\ \text{kHz}\) and peak voltage \(12\ \text{V}\) is used to modulate a carrier of frequency \(1.2\ \text{MHz}\) and peak voltage \(20\ \text{V}\). The modulation index is
The energy of a photon in a monochromatic light of wavelength \(621\ \text{nm}\) matches with the band gap of a semiconducting material. Then the minimum energy required to create an electron-hole pair from the semiconductor is
\[ [\text{Take } hc=1242\ \text{eV-nm}, \text{ where } h \text{ is Planck's constant and } c \text{ is speed of light in vacuum}] \]