List of top Questions asked in AP EAPCET

Observe the following reactions: \[ \text{Dimer} \xrightarrow{\text{vapour phase}} MCl_2 \xrightarrow{1200\,K} \text{linear monomer} \] What is \(M\)?

Statement A: pH of buffer increases with increasing temperature.
Statement B: The value of \(K_w\) of water decreases with decreasing temperature.

The structures of \(BCl_3\) and \(BCl_3 \cdot NH_3\), respectively are

Calculate \(\Delta_rH\ (kJ\ mol^{-1})\) of the following reaction \[ C_2H_5OH(l)+\frac{7}{2}O_2(g)\rightarrow 2CO_2(g)+3H_2O(l) \] Given: \[ \begin{array}{c|c} \text{Molecule} & \Delta_fH^\circ\ (kJ\ mol^{-1}) \\ \hline C_2H_5OH(l) & -280 \\ CO_2(g) & -400 \\ H_2O(l) & -290 \end{array} \]

Which of the following is not a state function?

What is the density of one mole of He (molar mass \(=4\ g\ mol^{-1}\)) at \(300\ K\) and a pressure of \(0.82\ atm\)? \((R=0.082\ L\ atm\ mol^{-1}\ K^{-1})\)

As per molecular orbital theory, the pair of molecules which do not exist is

Observe the following reaction: \[ I_2+10HNO_3 \rightarrow 2HIO_3+10NO_2+4H_2O \] The equivalent weight of \(HNO_3\) is (molar mass of \(HNO_3=M\))

If 5 amperes of current is passed for 193 seconds through a solution containing copper salt, \(0.32\ g\) of copper is deposited. What is the oxidation state of Cu in the salt?

The electronic configuration which is associated with highest first ionisation enthalpy is:

If the bond order of CO is \(x\), the bond order of \(O_2^{2-}\) ion is

The radius of the first orbit of \(Li^{2+}\) is \(X\ \text{\AA}\). The radius of the third orbit of \(He^{+}\) (in ) is

Which of the following elements has two electrons in Q shell in its ground state?

As the quantum number increases, the difference in energy between consecutive energy levels:

A nucleus has mass number \(A_1\) and volume \(V_1\). Another nucleus has mass number \(A_2\) and volume \(V_2\). If the relation between the mass numbers is \(A_2 = 3 A_1\), find \(\frac{V_1}{V_2}\).

The amplitude of the side bands of the modulated signal if the carrier signal and message signal amplitudes are 25 V and 5 V respectively is:

In a CE transistor amplifier, the signal voltage across the collector resistance is 2.5 V. The input signal voltage is 0.02 V. If the base and collector resistances are 1.5 k\(\Omega\) and 2.5 k\(\Omega\), find the current amplification factor.

The sum of electrons present in all subshells of an atom with \(m_s\) value of \(+\frac{1}{2}\) for \(n=4\) and \(m_s\) value of \(-\frac{1}{2}\) for \(n=3\) is

A monochromatic light is incident on a single slit of width 0.014 mm. The angular position of the second bright line observed is \(2.81^\circ\). Find the wavelength of the incident light. \([ \sin(2.81^\circ) = 0.049072 ]\)

A circular coil of area 0.01 m\(^2\) and 40 turns is rotated about its vertical diameter with an angular speed of 50 rad/s in a uniform horizontal magnetic field 0.05 T. If the average power loss due to Joule heating is 25 mW, find the closed loop resistance of the coil.

In a plane electromagnetic wave, the maximum value of the electric field component is \(4.4 \, \text{V/m}\). Find the intensity of the wave.

If the amplitude of the magnetic field in a travelling plane electromagnetic wave is \(2.2 \times 10^{-4} \, \text{T}\), then the intensity of the wave is nearly:

Two light waves of wavelengths 600 nm and 200 nm are incident on a metal surface. The maximum velocity of photoelectrons produced due to one wavelength is \(\frac{1}{3}\) of the maximum velocity of the photoelectrons produced due to the other wavelength. Find the work function of the metal.

Capacitive reactance of a capacitor in an AC circuit is 6 k\(\Omega\). If the same capacitor is connected to an AC source of double the frequency, find the new capacitive reactance.

The power consumed when 10 V voltage is applied to a series combination of 10 resistors of each 1 \(\Omega\) is \(P_s\), and the power consumed when the same 10 V is applied to the parallel combination of these 10 resistors is \(P_p\). Find the value of \(\frac{P_s}{P_p}\).