List of top Questions asked in AP EAPCET

At 300 K, the following graph is obtained for one mole of an ideal gas. If its pressure is 10 atm, then its volume (in L) will be
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
The following methods can not be used to remove permanent hardness of water:
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?
One mole H\textsubscript{2O(g) and one mole CO(g) are taken in 1L flask and heated to 725K. At equilibrium, 40\% (by mass) of water reacted with CO(g) as follows:} \[ \text{H}_2\text{O(g)} + \text{CO(g)} \rightleftharpoons \text{H}_2\text{(g)} + \text{CO}_2\text{(g)} \] Its $K_c$ value is
Given below are two statements
Statement I: The changes in pH with temperature are so small that we often ignore it
Statement II: When the hydrogen ion concentration changes by a factor of 100, the pH changes by one unit
In the light of above statements, identify the correct answer from the options given below
What are x, y and z respectively in the following reaction?
\[ x \text{Fe}^{2+} (aq) + y \text{H}^{+} (aq) + z \text{Cr}_2\text{O}_7^{2-} (aq) \rightarrow \frac{y}{2} \text{H}_2\text{O} (l) + x \text{Fe}^{3+} (aq) + 2z \text{Cr}^{3+} (aq) \]
At T (K), an ideal gas (Z) present in V L flask exerted a pressure of 16.4 atm. Its concentration is 1 mol L$^{-1}$. What is the value of T in K?
The correct order of electron gain enthalpy of N, O, Cl, Al is.
The number of bond pairs of electrons and total number of lone pairs of electrons in XeOF$_4$ are respectively
Maximum number of electrons theoretically possible for an orbit with principal quantum number n = 6 in an atom is.
Which of the following statements are correct?
Identify the region of spectral lines of electromagnetic spectrum, when electron transition takes place from higher energy levels to n = 3, 4, 5 in atomic spectrum of hydrogen.
The correct order of bond enthalpy of given molecules is
When light of wavelength \( \lambda \) incidents on a photosensitive material, photoelectrons are emitted. If the wavelength of the incident light is reduced by 50\%, the maximum kinetic energy of the emitted photoelectrons becomes 3 times the initial maximum kinetic energy. The work function of the material is:
Positron is the antiparticle of
The electric field in \( N C^{-1} \) of an electromagnetic wave is \( E = 36 \sqrt{\pi} \sin ( \omega t - kx) \). The average energy density of the electromagnetic wave due to the electric field is:
The radio horizon of the transmission of an antenna placed on the 20\(^\text{th}\) floor in a shopping mall, where the height of each floor is 2 m is
In a transistor amplifier, the voltage gain is
In the given circuit, when \( A = 1 \), \( B = 1 \) the values of \( X \) and \( Y \) respectively are
A = 1, B = 1 the values of X and Y respectively
The total energy of an electron in an orbit of hydrogen atom is \( E \). The potential energy of the electron in the same orbit is
A resistor of 100 \( \Omega \), an inductor of \( \frac{25}{\pi} \) mH, and a capacitor of 0.1 \( \mu \)F are connected in series to an ac source. The impedance of the circuit is minimum for a frequency of:
Two metal wires of same length, same area of cross-section have conductivities of their material \( \sigma_1 \) and \( \sigma_2 \). If they are connected in series, the effective conductivity is:
If \( q \) is electric charge, \( B \) is magnetic field, \( R \) is the dee radius and \( m \) is the mass of ions, the kinetic energy of the ions in cyclotron is given by:
Curl the palm of your right hand around the circular wire with the fingers pointing in the direction of current and the thumb gives the direction of the magnetic field. In this case the upper side of the loop may be thought of as: