List of top Questions asked in TS EAMCET- 2025

If the number of moles of \(\text{Fe}^{2+}\) ions oxidized by one mole of acidified \(\text{MnO}_4^-\) is \(x\), the number of moles of \(\text{Fe}^{2+}\) ions oxidized by one mole of acidified \(\text{Cr}_2\text{O}_7^{2-}\) is
One mole of an ideal gas at 300 K and 20 atm expands to 2 atm under isothermal and reversible conditions. The work done by the gas is \(-x\ \text{kJ mol}^{-1}\). The value of \(x\) is
\((R=8.3\ \text{J K}^{-1}\ \text{mol}^{-1})\)
At 1000 K, the equilibrium constant for the reaction
\(\text{CO}_2(\text{g}) + \text{H}_2(\text{g}) \rightleftharpoons \text{CO}(\text{g}) + \text{H}_2\text{O}(\text{g})\) is 0.53. In a one litre vessel, at equilibrium the mixture contains 0.25 mole of CO, 0.5 mole of \(\text{CO}_2\), 0.6 mole of \(\text{H}_2\) and \(x\) moles of \(\text{H}_2\text{O}\). The value of \(x\) is
Match the following
The correct answer is
Observe the following statements
Statement - I: Both LiF and CsI have low solubility in water
Statement - II: Low solubility of LiF in water is due to smaller hydration enthalpy of ions and that of CsI is due to its high lattice enthalpy
The correct answer is
In which of the following the s-block elements are arranged in the correct order of their melting points?
Identify the incorrect statement from the following?
Observe the following list of molecules. Number of polar and non polar molecules are respectively
\(\text{NH}_3, \text{BF}_3, \text{NF}_3, \text{H}_2\text{S}, \text{CO}_2, \text{CH}_4, \text{CHCl}_3, \text{H}_2\text{O}\)
Two vessels are filled with ideal gases A and B and are connected through a pipe of zero volume as shown in figure. The stop cock is opened and the gases are allowed to mix homogeneously and the temperature is kept constant. The partial pressures of A and B respectively (in atm) are
Electron gain enthalpy values (\(\Delta_{eg}H\)) (in kJ mol\(^{-1}\)) of elements X, Y and Z are \(-349, -200\) and \(-295\) respectively. X, Y and Z are respectively
The molecule `X' has see-saw shape with central atom in \(sp^3d\) hybridization. What is `X'?
In $\beta^-$ decay, a neutron transforms into a proton within the nucleus according to the equation:
neutron $\to$ proton + $\beta^-$ + $x$
In this equation the particle represented by 'x' is
Two radioactive substances A and B have same number of initial nuclei. If the half-lives of A and B are 1.5 days and 4.5 days respectively, then the ratio of the number of nuclei remaining in A and B after 9 days is
\(10^{10}\) electrons enter the emitter of a junction transistor in a time of \(0.4\ \mu\text{s}\). If \(5%\) of the electrons are lost in the base, then the collector current is
An electron in n-region of a p-n junction moves towards the junction with a speed of \(5 \times 10^5\ \text{ms}^{-1}\). If the barrier potential of the junction is \(0.45\ \text{V}\), then the speed with which the electron enters the p-region after penetration through the barrier is
(Charge of the electron \(= 1.6 \times 10^{-19}\ \text{C}\) and mass of the electron \(= 9 \times 10^{-31}\ \text{kg}\))
Coaxial cable, a widely used wire medium offers an approximate frequency bandwidth of
The electron in hydrogen atom undergoes transition from higher orbits to an orbit of radius 476.1 pm. This transition corresponds to which of the following series?
The ratio of the kinetic energies of the electrons in the third and fourth excited states of hydrogen atom is
A current of 4 A is passed through a square loop of side 5 cm made of a uniform manganin wire as shown in the figure. The magnetic field at the centre of the loop is
If $B_V$ and $B_H$ are respectively the vertical and horizontal components of the earth's magnetic field at a place where the angle of dip is $60^\circ$, then the total magnetic field at that place is
A coil of resistance $8\,\Omega$, number of turns 250 and area $120 \text{ cm}^2$ is placed in a uniform magnetic field of 2 T such that the plane of the coil makes an angle of $\frac{\pi}{6}$ with the direction of the magnetic field. In a time of 100 ms, the coil is rotated until its plane becomes parallel to the direction of the magnetic field. The current induced in the coil is
An inductor and a resistor are connected in series to an ac supply. If the potential differences across the inductor and the resistor are 180 V and 240 V respectively, then the voltage of the ac supply is
If electromagnetic waves of power 600 W incident on a non-reflecting surface, then the total force acting on the surface is
An electron and a positron enter a uniform electric field E perpendicular to it with equal speeds at the same time. The distance of separation between them in the direction of the field after a time 't' is
($\frac{e}{m}$ is specific charge of electron)
A charge q is placed at the centre 'O' of a circle of radius R and two other charges q and q are placed at the ends of the diameter AB of the circle. The work done to move the charge at point B along the circumference of the circle to a point C as shown in the figure is