List of top Questions asked in KEAM- 2025

The carbohydrates are stored in animal body as
Hardness of water is estimated by titration with
Which of the following molecules has the highest standard enthalpy change of fusion (\( \Delta_{fus}H^\circ \)) (in kJ mol\(^{-1}\))?

The order of acidity of the following compounds is:
 (i) o-Nitrophenol 
(ii) Phenol 
(iii) o-Cresol 
(iv) Ethanol

An ideal Carnot engine has an efficiency of 40 %. The ratio of the temperature of the sink to that of the source is
Which of the following transition metal oxide is used in dry battery cells?
Which of the following is not a chiral molecule?
Angular momentum of a particle will not be zero, if the
Which of the following is an extensive property?
A bullet of 10 g mass is fired at a speed of 50 m/s by a gun of 2 kg mass. The recoil speed of the gun (in m/s) is
Which one of the following principles helps to explain the flow of blood in an artery?
Energy equivalent of mass 0.5 kg is

The following data were obtained for the reaction: \[ 2NO(g) + O_2(g) \rightarrow 2N_2O(g) \] at different concentrations: 

 The rate law of this reaction is:

In the nuclear process, 1122Na → 1022Ne + e+ + νe, then X is
The magnetic moment of an electron revolving in an orbit of 0.5 m radius with a velocity of \( 8 \times 10^7 \, \text{m/s} \) is (in \( \text{Am}^2 \))
If an electron moves with a velocity \( v \) in a magnetic field \( B \), the magnetic force on the electron is maximum when the angle between \( v \) and \( B \) is
On complete combustion of 0.96 g of an organic compound, 0.88 g of carbon dioxide and 0.1 g of water are produced. What is the percentage composition of carbon in the compound?
In a semiconductor crystal, the total number of electrons in the outer shell is 4N . At absolute zero, the number of energy states of valence and conduction band are respectively
The angular momentum of the electron revolving in the 2nd orbit is

Match the following: 

The flux linked with a coil at any instant is given by \( \Phi = 5t^2 - 25t - 150 \) (in SI units). The emf induced in the coil at \( t = 2 \) s is
If Q1 and Q2 are respectively the heat supplied and expelled by a system at a constant temperature, then the work done by the system is
An astronaut experiences weightlessness in space satellite because
The force acting on the particle of 0.2 kg mass whose displacement is described by the equation \( x = 3t + 7t^2 \, \text{m} \)
Which of the following molecules has an expanded octet?