List of top Questions asked in AP ECET- 2025

Identify the pair containing only Lewis acids.

Identify the orbital which has lobes not orienting on the axis

Light of wavelength \(5000\text{ \AA}\) falls on a sensitive plate with photoelectric work function of \(1.9\text{ eV}\). The kinetic energy of the emitted photoelectron will be

If \(n,l,m\) and \(s\) represent the symbols of quantum numbers, the impossible quantum number set for the electron in terms of \(n,l,m\) and \(s\) respectively is

Consider the elements with atomic numbers \(Z=8,9,11,19\) and \(20\). The number of ionic compounds possible with the elements having these atomic numbers is

Consider the elements with atomic numbers \(Z=1\) to \(Z=20\). The number of elements with only one unpaired electron in their ground state is

A gas is compressed at a constant pressure of \(50\text{ N/m}^2\) from a volume of \(10\text{ m}^3\) to a volume of \(4\text{ m}^3\). Energy of \(100\text{ J}\) is then added to the gas by heating. Its internal energy is

A sealed glass jar is full of water. When its temperature is decreased to \(0^\circ\text{C}\)

A bubble rises from the bottom of a lake \(90\text{ m}\) deep. On reaching the surface, its volume becomes \((\text{Atmospheric pressure is }10\text{ m of water})\)

A vessel containing \(10\) liters of an ideal gas at a pressure of \(760\text{ mm of Hg}\) is connected to an evacuated \(9\) liter vessel. The resultant pressure is

An endoscope is employed by a physician to view the internal parts of a body organ. It is based on the principle of

During the melting of a slab of ice at \(273\text{ K}\) at atmospheric pressure

A siren emitting sound of frequency \(800\text{ Hz}\) is going away from a static listener with a speed of \(30\text{ m/s}\). Frequency of sound heard by the listener is \((\text{Velocity of sound in air}=340\text{ m/s})\)

The amplitude of a simple harmonic oscillator is \(A\). When the velocity of particle is half of its maximum velocity, then its position is at

The beats are produced by two sound sources of same amplitude and of nearly equal frequencies. The maximum intensity of beats will be {

The displacement of a particle executing SHM is \(x=3\sin2t+4\cos2t\). The amplitude of particle is

If a seconds pendulum on the earth is taken to a planet whose gravity is half of the gravity on earth, its time period on that planet is

An engine delivers \(1000\text{ watt}\) of power with \(80\%\) efficiency. The input power is

The time taken by a body to slide down the smooth inclined plane is \(4\text{ sec}\). The time taken by a body to slide \(1/4^{\text{th}}\) of the length of the plane is

At her maximum height a girl in a swing is \(3\text{ m}\) above the ground and at the lowest point she is \(2\text{ m}\) above the ground. Her maximum velocity is

A body of mass \(2\text{ kg}\) changes its velocity from \((3\hat{i}-4\hat{j})\text{ m/s\) to \((6\hat{j}+2\hat{k})\text{ m/s}\). What is the change in kinetic energy of the body?}

A body starts from rest and travels with uniform acceleration. If the distance covered in first \(2\) seconds is \(x\) and next \(2\) seconds is \(y\), then

If a body released from the top of a tower of height \(H\) meter takes \(T\) seconds to reach the ground, where is the body at time \(T/2\) seconds from the ground?

A juggler throws ball into air. He throws one whenever the previous one is at its highest point. How high do the balls rise if he throws \(n\) balls each second?

A block of mass \(m\) is lying on an inclined plane. The coefficient of friction between the plane and the block is \(\mu\). The force required to move the block up the inclined plane will be