List of top Questions asked in KEAM

Which one of the following reaction provides a primary alcohol?
Which of the following compounds are optically active? (i) 3-hydroxypentane$\quad$$\quad$ (ii) 2-aminopropanoic acid (iii) 2-chlorobutane $\quad$$\quad$(iv) 2-methylbutane Choose your answer from the codes given below
Which of the following activates JG cells to release renin?
The group 13 element that is liquid during summer and used for measuring high temperature is
Select the correct sequence of steps in DNA fingerprinting involving southern blot hybridization using radiolabelled VNTR as a probe. I. $\quad$Hybridization using labelled VNTR probe. II. $\quad$Isolation of DNA. III. $\quad$Transferring (blotting) of separated DNA fragments to synthetic $\quad$$\quad$membranes, such as nitrocellulose or nylon. IV.$\quad$ Detection of hybridized DNA fragments by autoradiography. V. $\quad$Separation of DNA fragments by electrophoresis. VI. $\quad$Digestion of DNA by restriction endonucleases.
Pick out the wrong statement
The heart is pumping blood at x kg per unit time, with a constant velocity v. The force required is
A travelling harmonic wave on a string is described by $y$ = 7.5 sin (0.005$x$ + 12$t$) in metre. Its time period in second is
A carpet of mass $m$ made of inextensible material is rolled along its length in the form of a cylinder of radius $r$ and kept on a rough floor. The decrease in the potential energy of the system, when the carpet is unrolled to a radius $\frac{r}{2}$ without sliding is $(g=$ acceleration due to gravity)
If $p :$ The earth is round, $q : 3 + 4 = 7 $ then $\left(\sim p\right)\vee\left(\sim q\right)$ is
If $\frac{\sin x}{\cos x} \times \frac{\sec x}{\operatorname{cosec} x} \times \frac{\tan x}{\cot x}=9, $ where $x \in\left(0, \frac{\pi}{2}\right)$, then the value of $x$ is equal to
The element with positive electron gain enthalpy is
One mole of propanone and one mole of formaldehyde are the products of ozonolysis of one mole of an alkene. The alkene may be
$\int\frac{1+log\,x}{\left(1+x\,log\,x\right)^{2}}dx$ is equal to
The electric potential V at any point $(x, y, z)$ in space is given by $V = 3x^{2}$ where $x, y, z$ are all in metre. The electric field at the point (1 m, 0, 2 m) is
The radius of gyration of a solid cylinder of mass $M$ and radius $R$ about its own axis is
The graph between displacement and time for a particle moving with uniform acceleration is a
The correct IUPAC name of the following compound is
The shunt resistance required to allow $4\%$ of the main current through the galvanometer of resistance $48 \, \Omega$ is
The simple harmonic vibrations of two particles are $ y_{1} =5$ sin (100$t$) and $y_{2} =4 $ cos $\left(100t +\frac{\pi}{4}\right).$ The phase difference between them is
Only $sp$ and $sp$ hybrid orbitals are involved in the formation of
The horizontal range is four times the maximum height attained by a projectile. The angle of projection is
Two cars started moving with initial velocities $v$ and $2v$. For the same deceleration, their respective stopping distances are in the ratio
The electrolyte used in Leclanche cell is
Sickle cell anaemia is caused by substitution of