List of top Questions asked in KEAM

The resistivity of the material of a potentiometer wire is $5 \times 10^{-6} \Omega\, m$ and its area of cross section is $5 \times 10^{-6} \; m^2$. If $0.2\, A$ current is flowing through the wire, then the potential drop per metre length of the wire is
Which one of the following is the significance of mitosis?
Genetic engineered male sterile crop plants may be produced by inserting
i.$\quad$ They help in respiration ii.$\quad$ They help in cell wall formation iii.$\quad$ They help in DNA replication iv. $\quad$They increase surface area of plasma membrane Which of the following prokaryotic structures has all the above roles?
The lumbar region of the vertebral column in man is made up of
The following figure given below is a diagrammatic representation of organismic response to abiotic factors. What do (a), (b) and (c) represent respectively?
The first trophic level in an ecosystem consists of
From the above table find out the missing organ or function - a, b, c, d and e respectively
Orbital velocity of earth satellite does not depend on
Which one of the following compounds shows cis-trans isomerism?
The equilibrium constant for the equilibrium $PCl _{5}(g) \rightleftharpoons PCl _{3}(g)+ Cl _{2}(g)$ at a particular temperature is $2 \times 10^{-2}\, mol L ^{-1}$. The number of moles of $PCl _{5}$ that must be taken in a one litre flask at the same temperature to obtain a concentration of $0.20$ mole of chlorine at equilibrium is
The entry of food into the larynx is prevented by
Microsatellites are
Which one of the following is not an isomer of $3-methylbut-1-yne$?
Which among these is not involved in excretion in cockroaches?
The total number of optical isomers possible for 2,3-dibromobutane is
The dimensions of mobility of charge carriers are
The fusion reaction in the sun is a multi-step process in which the
The speed of light in an isotropic medium depends on
The entropy of vaporization of a liquid is $58 \, JK^{-1} \,mol^{-1}$. If $100\, g$ of its vapour condenses at its boiling point of $123^{\circ}C$, the value of entropy change for the process is (Molar mass of the liquid = $58 \,g \,mol^{-1})$
A uniform wire of resistance 9 $\Omega$ is joined end-to-end to form a circle. Then the resistance of the circular wire between any two diametrically opposite points is
A particle has the position vector ${r} = \hat{i} - 2\hat{j } + \hat{k}$ and the linear momentum ${p} = 2\hat{i} - \hat{j} + \hat{k}$. Its angular momentum about the origin is
Green chemistry deals with
If $0< x< \pi$, then $\frac{\sin 8 x+7 \sin 6 x+18 \sin 4 x+12 \sin 2 x}{\sin 7 x+6 \sin 5 x+12 \sin 3 x}$ equal to
A body oscillates with SHM according to the equation (in SI units), $x = 5 cos \left(2\pi t +\frac{\pi}{4}\right) .$ Its instantaneous displacement at $t = 1$ second is