List of top Questions asked in KEAM

The time required to stop a car of mass 800 kg, moving at a speed of 20 ms\(^{-1}\) over a distance of 25 m is
From a balloon moving upwards with a velocity of 12 ms\(^{-1}\), a packet is released when it is at a height of 65 m from the ground. The time taken by it to reach the ground is (g = 10 ms\(^{-2}\))
If the displacement of a body varies as the square of elapsed time, then its
A bus is moving with a velocity of 10 ms\(^{-1}\) on a straight road. A scooterist wishes to overtake the bus in one minute. If the bus is at a distance of 1.2 km ahead, then the velocity with which he has to chase the bus is
A force F is applied onto a square plate of side L. If the percentage error in determining L is 2% and that in F is 4%, the permissible percentage error in determining the pressure is
The physical quantity that does not have the dimensional formula \( [ML^{-1}T^{-2}] \) is
Two capillary tubes A and B of diameter $1\, mm$ and $2\, mm$ respectively are dipped vertically in a liquid. If the capillary rise in A is 6 cm, then the capillary rise in B is
Acid catalysed hydration of alkene is an example for
How does the electron gain enthalpies vary across a period and down a group?
n-hexane on heating to $773 \,K$ at $10-20$ atmospheric pressure in the presence of oxides of vanadium supported over alumina, yields
Which one of the following monomers form biodegradable polymer?
The equation of the plane which bisects the line segment joining the points $(3, 2, 6)$ and $(5,4, 8)$ and is perpendicular to the same line segment, is
Which one of the following is an allylic halide ?
Match the following and choose the correct option
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