List of top Questions asked in KEAM

Molar enthalpy change for vaporization of 1 mol of water at $100^{\circ}C$ is $41kJ~mol^{-1}$. Calculate the internal energy change ($kJ~mol^{-1}$) assuming ideal gas behavior. ________.
12g of pure graphite is burnt. Temperature rises from 298 K to 308 K. Heat capacity of the calorimeter is $20.7~kJ~K^{-1}$. Enthalpy change for combustion of 1 mole of graphite $(kJ~mol^{-1})$ is ________.
Which one of the following molecules contains two 'sigma' ($\sigma$) bonds and two 'pi' ($\pi$) bonds? ________.
The alkali metal with the highest first enthalpy of ionization is ________.
What is the total number of orbitals associated with the principal quantum number $n=3$? ________.
For any sub-shell defined by '$l$' value how many values of magnetic quantum number ($m_l$) are possible? ________.
Ten grams of calcium carbonate which is only 90% pure is treated with excess hydrochloric acid. What is the mass of $CO_{2}$ gas liberated? (Atomic mass: $Ca=40$, $C=12$ & $O=16$) ________.
The donor level in an n-type semiconductor lies ________.
In a Germanium crystal containing N atoms, the total number of outer electrons is ________.
If a radioactive element disintegrates for its mean life, the fraction of original amount remaining is ________.
In the nuclear reaction $\begin{smallmatrix}197\\ 80\end{smallmatrix}X \rightarrow \begin{smallmatrix}197\\ 79\end{smallmatrix}Y + Z + v$, the particle Z is ________.
The ratio of the respective de Broglie wavelengths of two particles with kinetic energy of 0.02 eV and 2 eV is ________.
The plot of maximum kinetic energy of photo-electrons vs the energy of incident photons above threshold frequency is ________.
In Huygens construction, the secondary wavelets move ________.
The phenomenon of diffraction is most significant when the slit width is ________.
When a beam of white light enters into an optical prism, the most deviated colour is ________.
The speed of electromagnetic waves in a medium depends on the ________.
A metal rod of length 0.5 m moves at $3~ms^{-1}$ perpendicular to a magnetic field of 0.2 T. The induced emf is ________.
The resistance of a semiconductor ________.
A galvanometer is converted into a voltmeter by connecting ________.
The magnetic dipole moment of a current loop carrying current $I$ and of area $A$ with $n$ turns is ________.
The line integral of the magnetic field around a closed loop is directly proportional to the ________.
If $n$ identical cells each of emf $E$ and internal resistance $r$ are connected in parallel, the total EMF and total internal resistance are: ________.
The resistance of 2 km of a subway track with cross-sectional area 20 $cm^2$ is (in ohm) as a multiple of the specific resistance of steel $\rho$: ________.
A Wheatstone bridge is used to measure ________.