List of top Questions asked in KEAM- 2025

Which of the following is an extensive property?
Acetanilide is prepared by reacting -------and-------.
The pKa value of a 0.1 M solution of a weak acid HA with pH = 4 is:
Arrange the following in the order of conductivity: Na, Ag, Fe, Cu
The power dissipated by a particle with constant force and constant acceleration is proportional to the:
Aryl halides react with Na in dry ether gives diphenyls. Name of the reaction is:
A body is rotated about a fixed axis. Which of the following is correct about angular velocity?
If \( B = 400\sqrt{2} \sin(\omega t - kx) \), find the peak value of the magnetic field of the electromagnetic wave.
Express the final answer to the proper number of significant figures: \[ 18.0 + 11.515 + 13.2 = \ldots \]
Moment of inertia of a disc about the axis passing through the center and perpendicular to the plane is \(I_1\). What is the moment of inertia about its diameter?
When a body is dropped from height H, the time taken to reach the ground is T. What is the time taken to reach height H/2 from the ground?
Band gap energy of Si is:
When blue light is incident on metal surface, photoelectrons are emitted. When green light is incident, no photoelectrons are emitted. What is the number of photoelectrons emitted when yellow light is incident?
Find the pressure on an air bubble of radius \( r \) at a height \( h \) from the surface of the water.
Choose the incorrect statement:
The ratio of frequency of the 3rd mode of vibration for the closed organ pipe and the open pipe of length \( L \)?
Which is a heterocyclic compound?
If a p-n junction diode is forward biased, then:
If a bar magnet is doped into a circular ring placed horizontally, then what change will happen?
Which of the following is incorrect?
If fringe width obtained in a YDSE is 1.3mm. If the whole system is dipped in a liquid of refractive index 1.3, then the new fringe width will be:
Energy dissipated per unit time by a wire of resistance \(2R\) connected to a 2V battery.
A body starts from rest and moves with an acceleration of \(2 \, \text{m/s}^2\) and comes to rest with a retardation of \(2 \, \text{m/s}^2\). Find the distance travelled?
Energy of H atom in ground state is 13.6 eV. No of spectral lines emitted by 'H' atom when a photon of energy 12.75 eV is received?
Area under \(F\) and \(t\) graph is?