List of top Questions asked in JEE Main

The PV curve shown in the diagram consists of two isothermal and two adiabatic curves. Then:
consists of two isothermal and two adiabatic curves
In a series LCR Circuit, the value of resistance as well as (XL - XC) is halved, then the new current amplitude (I2) will satisfy: (I1 is old current amplitude)
In a clock, second hand and minute hand are of 75 cm and 60 cm respectively. After 30 minutes, ratio of distance travelled by the tip of second hand to that of minute hand is x. Find x.
If the resultant of the vectors shown in A√x, find x.
the resultant of the vectors
A ball initially at rest, breaks into two masses m1 and m2 that move with speed 11 and v2 respectively as shown. The ratio of the kinetic energy of the right mass to the left mass is:
Critical angle for a pair of medium is given to be 45°. Find the ratio of the refractive index of rarer to denser medium.
A ball of mass 150 gm moving with speed 20m/s is catched in 0.1 sec. find the average force exerted by the hands.
In an electron and a proton are having the same kinetic energy, find the ratio of their linear momentum. (mass of electron = 9.1 x 10-31 kg, mass of proton = 1.67 × 10-27 kg)
For the given logic circuit, the correct relation between the input (A, B) and the output (Y) is
given logic circuit, the correct relation
The organ pipe having same length, one is open while the other is closed. Find ratio of 7th overtone of those organ pipes.
Two planets of mass m1 and m2 are revolving around their orbits r and r2 respectively. Angular momentum of planets are in ratio of 3 then T1/T2 is___
(T1 and T2 are periods of revolutions)
From a rectangular sheet, the shaded portion is removed. Find the co- ordinates of the center of mass after the portion has been removed.
a rectangular sheet, the shaded portion is removed
Which of the following is incorrect for paramagnetic materials?
If radius of earth reduced by one fourth of its present value, then duration of days will be
An electromagnetic radiation of intensity 360 W /cm2 is incident normally on a non-reflecting surface having area A. Average force on the surface is found to be 2.4 x 10-4 N. Find the value of A.
A solenoid of 10 turns cross section area 36 cm2 and of resistance 10 mΩ is placed in a magnetic field which is varying at a constant rate of 0.5 T/sec. Find power of heat dissipation.
The diameter of a sphere having mass 8.635 gm is measured by a vernier scale. 10 divisions of vernier scale coincide with 9 divisions of main scale and main scale division is 1 mm. If the reading of the main scale is 2 cm & 2nd division of vernier coincide with a main scale division, the density of the sphere is
Three particles having different masses have the same momentum. Find the ratio of their kinetic energy. (m1 = 400 gm,m2 = 1.2 kg,m3 = 1.6 kg)
In a diffraction pattern of a monochromatic light of wavelength 6000 pm, the slit width is 3 mm. If the angular position of 2nd minima is N x 10-6 rad, find N.
The ratio of molar heat capacity at constant volume of one mole monoatomic gas to the one mole diatomic gas is given as a/b, where a and b are co-prime number, then find (a + b)
Consider following statements.
S1: IUPAC name is IUPAC name is 4-chloro-1,3-dinitrobenzene
S2: IUPAC name is IUPAC name is 2-methylaniline
We have two complexes, [Fe(H2O)6]2+ and [Cu(H2O)6]2+ , the magnetic properties respectively are
Find among the spin only magnetic moment (nearest integer) of M in MO42-, M being the atom having least atomic radii among Sc, Ti, V, Cr, Mn, Zn.
A solution contains 100 g water and 10 g of AB2, The boiling of the solution was found to be 100.52% The degree of dissociation of AB2 is: 
[MW of AB = 200 gm/mol ; Kb = 0.52 Kkg/mol
Statement-I : Stability of +1 oxidation state increases as Ga< In < Tl
Statement-II : Stability of +1 oxidation state increases down the group due to inert pair effect.