List of top Questions asked in KEAM

The main digestive function of enterokinase is

The wavelength of red light from $He-Ne$ laser is $ 633\, nm $ in air but $ 474 $ nm in the aqueous humor inside the eye ball. Then the speed of red light through the aqueous humor is

New systematics introduced by Sir Julian Huxley is also called

Two particles of equal charges after being accelerated through the same potential difference enter a uniform transverse magnetic field and describe circular path of radii $ {{R}_{1}} $ and $ {{R}_{2}} $ respectively. Then the ratio of their masses $ ({{M}_{1}}/{{M}_{2}}) $ is

Three charges $ {{Q}_{0}},-q $ and $ -q $ are placed at the vertices of an isosceles right angle triangle as in the figure. The net electrostatic potential energy is zero if $ {{Q}_{0}} $ is equal to

Of the isomeric hexanes, the isomers that give the minimum and maximum number of monochloro derivatives are respectively

Meselson and Stahl experiment proved

Let $ {{z}_{1}} $ and $ {{z}_{2}} $ be the roots of the equation $ {{z}^{2}}+pz+q=0 $ where p, q are real. The points represented by $ {{z}_{1}},{{z}_{2}} $ and the origin form an equilateral triangle, if

The refractive indices of glass and water with respect to air are $\frac{3}{2}$ and $\frac{4}{3}$ respectively. Then the refractive index of glass with respect to water is

Given $ tan\text{ }A $ and $ tan\text{ B} $ are the roots of $ {{x}^{2}}-ax+b=0 $ . The value of $ {{\sin }^{2}}(A+B) $ is

On the set $N$ of all natural numbers define the relation $R$ by $a R b$ if and only if the $G.C.D.$ of $a$ and $b$ is $2$, then $R$ is

The radius of the first Bohr orbit of hydrogen atom is $ 0.529\overset{\text{o}}{\mathop{\text{A}}}\, $ . The radius of the third orbit of $ {{He}^{+}} $ will be

The $ x- $ axis, $ y- $ axis and a line passing through the point A (6, 0) form a triangle $ABC$. If $ \angle A=30{}^\circ , $ then the area of the triangle, in sunits is

The resistance of a wire at room temperature $ 30{}^\circ C $ is found to be $ 10\,\Omega $ . Now to increase the resistance by 10%, the temperature of the wire must be [The temperature coefficient of resistance of the material of the wire is $ 0.002/{}^\circ C $ ]

Out of $15$ persons, $10$ can speak Hindi and $8$ can speak English. If two persons are chosen at random, then the probability that one person speaks Hindi only and the other speaks both Hindi and English is

$N$ identical drops of mercury are charged simultaneously to $ 10 \,V $ . When combined to form one large drop, the potential is found to be $ 40\, V $ , the value of $ N $ is

Modulation is the process of superposing

Two balls are dropped to the ground from different heights. One ball is dropped $ 2\, s $ after the other but they both strike the ground at the same time. If the first ball takes $ 5\, s $ to reach the ground, then the difference in initial heights is $ (g=10m{{s}^{-2}}) $

Select the true statement from the following. Nuclear force is

The hardness of water sample containing $ 0.002 $ mole of magnesium sulphate dissolved in a litre of water is expressed as

The excretory organ in Cockroach is

The equlibrium constant for the reaction $ 2N{{O}_{2}}(g) \rightleftharpoons 2NO(g)+{{O}_{2}}(g) $ is $ 2\times {{10}^{-6}} $ at $ 185{}^\circ C $ . Then the equilibrium constant for the reaction, $ 4NO(g)+2{{O}_{2}}(g) \rightleftharpoons $ $ 2N{{O}_{2}}(g) $ at the same temperature would be

Which one of the following statements about amino acids is not true?

The slope of the kinetic energy versus position vector gives the rate of change of

The skip zone in radio wave transmission is that range where