List of top Questions asked in TS EAMCET- 2025

For the reaction \( \text{N}_2\text{O}_4(g) \rightleftharpoons 2\text{NO}_2(g) \), the correct relation between degree of dissociation (\(\alpha\)) of \( \text{N}_2\text{O}_4(g) \) and equilibrium constant, \( K_p \) is (P = total pressure of mixture)
At 298 K, the enthalpy change (in kJ) for the reaction given below is: \( \text{CH}_4(g) + \text{O}_2(g) \to \text{C}(s) + 2\text{H}_2\text{O}(l) \) (Given: \( \text{H}_2(g) + \frac{1}{2}\text{O}_2(g) \to \text{H}_2\text{O}(l); \Delta H^\ominus = -286 \text{ kJ} \) \( \text{C}(s) + \text{O}_2(g) \to \text{CO}_2(g); \Delta H^\ominus = -394 \text{ kJ} \) \( \text{CH}_4(g) + 2\text{O}_2(g) \to \text{CO}_2(g) + 2\text{H}_2\text{O}(l); \Delta H^\ominus = -890 \text{ kJ} \))
The RMS velocity of dihydrogen is \( \sqrt{7} \) times more than that of dinitrogen. If \( T_{\text{H}_2} \) and \( T_{\text{N}_2} \) are the temperatures of dihydrogen and dinitrogen, then the correct relationship between them is
Consider the following statements.
I. In the conversion of \( \text{O}_2 \) to \( \text{O}_2^{2+} \) bond order decreases.
II. In the conversion of \( \text{O}_2 \) to \( \text{O}_2^{+} \) magnetic property is not changed.
III. In the conversion of \( \text{O}_2 \) to \( \text{O}_2^{+} \) bond length decreases.
IV. \( \text{O}_2^{2-} \) and \( \text{B}_2 \) have same bond order.
Identify the correct statements
Identify the pair of molecules in which the hybridization of the central atom is \( sp^2 \) with bent geometry
For commercial telephonic communication, the frequency range adequate for speech signals is
The power gain and voltage gain of a transistor connected in common emitter configuration are 1800 and 60 respectively. If the change in the emitter current is 0.62 mA, then the change in the collector current is
If 96.875% of a radioactive substance decays in 10 days, then the half life of the substance is (in days)
If the difference in the frequencies of the first and second lines of Lyman series of hydrogen atom is f, then the difference in frequencies of the first and second lines of Balmer series of hydrogen atom is
Photons of energy 4.5 eV are incident on a photosensitive material of work function 3 eV. The de Broglie wavelength associated with the photoelectrons emitted with maximum kinetic energy is nearly
The dielectric constant of a medium is 8 and its relative permeability is 200. If an electromagnetic wave of frequency 100 MHz travels in this medium, then its wavelength is
The frequency of an alternating voltage is 50 Hz. The time taken for instantaneous voltage to increase from zero to half of its peak voltage is
The plane of a circular coil of resistance 7.5 \( \Omega \) is placed perpendicular to a uniform magnetic field. The flux \( \phi \) (in weber) through the coil varies with time t (in second) as \( \phi = 2t^2 + 3t - 2 \). The induced power in the coil at time t = 3s is
If the magnetic susceptibility of a substance is 0.6, then the ratio of permeability of the substance and permeability of free space is
A solenoid of length 50 cm and radius 10 cm has two closely wound layers of windings 100 turns each. If a current of 2.5 A is passing through the windings, the magnetic field (in \( 10^{-4} \) T) at a point 5 cm from the axis is
A proton and an alpha particle moving with equal speeds enter normally into a uniform magnetic field. The ratio of times taken by the proton and the alpha particle to make one complete revolution in the magnetic field is
The power of an electric motor is 242 W when connected to a 220 V supply. When the motor is operated at 200 V, the current drawn by it is
The drift speed of electrons in a material is found to be \( 0.3 \, \text{ms}^{-1} \) when an electric field of \( 2 \, \text{Vm}^{-1} \) is applied across it. The electron mobility (in \( \text{m}^2 \text{V}^{-1} \text{s}^{-1} \)) in the material is
As shown in the figure, a dielectric of constant K is placed between the plates of a parallel plate capacitor and is charged to a potential V using a battery. If the dielectric is pulled out after disconnecting the battery from the capacitor, the final potential difference across the plates of the capacitor is

In Young's double slit experiment with light of wavelength \( \lambda \), the intensity of light at a point on the screen where the path difference becomes \( \frac{\lambda}{3} \) is (I is intensity of the central bright fringe)
The total magnification produced by a compound microscope is 24 when the final image is formed at the least distance of distinct vision. If the focal length of the eyepiece is 5 cm, the magnification produced by the objective is
Two sound waves each of intensity I are superimposed. If the phase difference between the waves is \( \frac{\pi}{2} \), then the intensity of the resultant wave is
The fundamental frequency of transverse wave of a stretched string subjected to a tension \( T_1 \) is 300 Hz. If the length of the string is doubled and subjected to a tension of \( T_2 \), the fundamental frequency of the transverse wave in the string becomes 100 Hz, then \( T_2 : T_1 = \) (Linear density of the string is constant)
The molar specific heat of a monoatomic gas at constant pressure is (Universal gas constant = \( 8.3 \, \text{Jmol}^{-1}\text{K}^{-1} \))
Two moles of a gas at a temperature of \( 327^\circ\text{C} \) expands adiabatically such that its volume increases by 700%. If the ratio of the specific heat capacities of the gas is \( \frac{4}{3} \), then the work done by the gas is (Universal gas constant = \( 8.3 \, \text{Jmol}^{-1}\text{K}^{-1} \))