List of top Questions asked in KEAM

Two wires $A$ and $B$ of same material and of equal length with the radii in the ratio $1 : 2$ are subjected to identical loads. If the length of $A$ increases by $8\, mm$, then the increase in length of $B$ is
A simple pendulum is taken from the equator to the pole. lts period
Covalent compounds have low melting points because
The magnetic induction field has the dimensions of
The magnetic moment of $Ni^{2+}$ ion (At. No. of Ni. is 28) in BM unit is
If the mass of moon is $ \frac{1}{90} $ of earths mass, its radius is $ \frac{1}{3} $ of earths radius and if $ g $ is acceleration due to gravity on earth, then the acceleration due to gravity on moon is ...... :
The number of primary, secondary, tertiary and quaternary carbons in neopentane are respectively
If the road is unbanked and the coefficient of friction between the road and the tyres is $ 0.8 $ , then the maximum speed with which an automobile can move around a curve of $ 84.5 \, m $ radius without slipping $ (g=10\text{ }m{{s}^{-2}}) $ is
Electric lines of force about a positive point charge are
If the time taken by a hot body to cool from $50^{\circ}$C to $40^{\circ}$C is 10 minutes when the surrounding temperature is $25^{\circ}$C. then the time taken for it to cool from $40^{\circ}$C to $30^{\circ}$C when the surrounding temperature is $15^{\circ}$C, is
In a first order reaction 80% of the reactant at an instant was reduced to 8% in 4606 seconds. The rate constant of the reaction is
In amplitude modulation, the bandwidth is
In an L-C-R series AC circuit, if $\omega_0$ is the resonant angular frequency, then the quality factor (Q-factor) is given by
In aqueous solution, an amino acid exists as
Three elements x, y and z have the respective oxidation states -2, +3 and -1 which one of the following could be possible formula of the compound form by these elements ?
Total number of degrees of freedom of a rigid diatomic molecule is
Which of the following sets has Lewis acid behaviour for all the components?
In the measurement of the angle of a prism using a spectrometer, the readings of first reflected image are Vernier $I : 320^\circ 40';$ Vernier $ II : 140^\circ 30' $ and those of the second reflected image are Vernier $ I : 80^\circ 38'; $ Vernier $ II : 260^\circ 24'.$ Then the angle of the prism is
Lactose is made of
Pick out the correct statement in the following with reference to stationary wave pattern
A particle moving in a straight line covers half the distance with speed of $3 ms^{-1}$. The other half of the distance is covered in two equal time intervals with speed of $4.5\, ms^{-1}$ and $7.5\, ms^{-1}$ respectively. The average speed of the particle during this motion is
Identify the $T$-shaped molecule in the following
Which of the following ions has the same number of unpaired electrons as those present in $V^{3+}$?
Two identical spheres of radius $R$ made of the same material are kept at a distance $d$ apart. Then the gravitational attraction between them is proportional to
Vitamin A is called