List of top Questions asked in KEAM

An atom with high electronegativity has
Among the transition metals of 3d series, the one that has the highest negative $M^{2+} /M$ standard electrode potential is
The number of primary, secondary, tertiary and quaternary carbons in neopentane are respectively
The values if ?H and ?S for the reaction C(graphite) + CO(g) ?2CO(g) Are 170 kJ and 170 JK-1 respectively. The reaction will be spontaneous only a
The rate of forward reaction is two times that of the reverse reaction at a given temperature and identical concentration, K equilibrium is
The product/s formed when diborane is hydrolysed is/are
Sea weeds are an important source of
Syngas is a mixture of
Carbohydrates are stored in human body as the polysaccharide
A paramagnetic substance of susceptibility $ 3\times {{10}^{-4}} $ is placed in a magnetic field of $ 4\times {{10}^{-4}}A{{m}^{-1}} $ . Then the intensity of .magnetization in the units of $ A{{m}^{-1}} $ is
The graph between resistivity and temperature, for a limited range of temperatures, is a straight line for a material like
An electron enters uniform electric field maintained by parallel plates and of value $ EV{{m}^{-1}} $ with a velocity $ v\text{ }m{{s}^{-1}}, $ the plates are separated by a distance $ d $ metre, then acceleration of the electron in the field is:
Pick out the correct statement in the following with reference to stationary wave pattern
A particle of mass $m$ and charge $q$ is placed at rest in uniform electric field $E$ and then released. The kinetic energy attained by the particle after moving a distance $y$ is
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
The ratio of hydraulic stress to the corresponding strain is known as
In amplitude modulation, the bandwidth is
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
Consider a circular loop of radius R on the xy-plane carrying a steady current anticlockwise. The magnetic field at the center of the loop is given by
An engine of power $58.8\, kW$ pulls a train of mass $2 \times 10^{5}\, kg$ with a velocity of $36\, kmh ^{-1}$. The coefficient of friction is
The half-life of thorium X is 3.64 days. After how many days will 0.1 of the mass of a sample of the substance remain undecayed?
A cyclist bends while taking turn in order to
Identify the mismatched pair from the following
If the rms value of sinusoidal input to a full wave rectifier is $\frac{V_0} { \sqrt{2}}$ then the rms value of the rectifier?s output is
Consider a cylindrical conductor of Length L and area of cross section A. The specific conductivity varies as $\sigma (x) = \sigma_0 \frac{L}{\sqrt{x}}$ where x is the distance along the axis of the cylinder from one of its ends. The resistance of the system along the cylindrical axis is