List of top Questions asked in JEE Main

There are two fixed charged spheres P and Q repelling each other with a force of 16 N. A third neutral sphere is placed between the charged spheres. The new force between the spheres is _________ (assuming all the spheres are insulating)
Which of the following statement is INCORRECT
A metallic rod of length 4 m is rotating about perpendicular bisector of the rod with angular velocity of 2 rad/s in presence of transverse magnetic field of 0.5 T. Potential difference developed across ends of rod is
Instantaneous current in a circuit is \(i(t)=[6+\sqrt54sin(2\pi + \pi/3)]\) A RMS value of current is
The number of real solution x|x + 5| + 2|x + 7| - 2 = 0 is
How many of the following have zero dipole moment $H_2S, CH_4, NH_3, BF_3, SO_2, NF_3$
In an atom, how many electrons can have
(i) n = 4 (ii) m1 =1 (iii) ms = ½
Equanil drug is used for which disease?
Shortest wavelength in Lyman series has wavelength of 915 À. Longest wavelength of Balmer series has a value of ?
A truck is moving from rest with constant power P. if the displacement of the truck is proportional to t", where t is time, find n.
Which postulate of Dalton's theory is wrong
Arrange the following carbocations in increasing order of their stability.
I) \((CH_3)_3C^{\oplus}\)
II) \((CH_3)_2\overset{{\oplus}}{C}H\)
III) \(\overset{{\oplus}}{C}H_3\)
IV) \(CH_3\overset{{\oplus}}{C}H_2\)
Sum of O atoms in A and B is ?
Sum of O atoms in A and B is ?
In sonometer, fundamental frequency changes from 400 Hz to 500 Hz keeping same tension. Find percentage change in length.
For what boolean values of A, B & C the given logic gate gives output of zero?
boolean values of A, B & C
In group A there are 4 men and 5 women and in group B there are 5 men and 4 women, if 4 people are selected from each group. Find a number of ways to select 4 men and 4 women.
If $f(x)= x^5 + 2x^3 + 3x + 1$ and $g(f(x)) = x,$ then $\frac{g(1)}{g’(1)}$ is equal to
$∫_{-\pi}^{\pi} \frac{2x(1+sinx)}{1+cos^2x}dx $ is equal to?
The molar conductivities of a divalent cation (M2+) and monovalent anion (A-) are 57 S cm-1 mol-1 and 73 S cm-1 mol-1 respectively. Then find the total molar conductivity shown by their compound in S cm-1 mol-1
Consider the following statements:
Statement I: Stability of +1 oxidation state increases down the group in group-13.
Statement II: Atomic radius of Ga is greater than that of Al.
In which of the following compounds Mn has the highest oxidation state?
Let f(x) = $x^2 - 5x$ and $g(x) = 7x - x^2$, then the area between the curves equals to:
Which metal shows the highest and maximum number of oxidation states?
A rectangle ABCD with ABCD with AB = 2 and BC = 4 is inscribed in rectangle PQRS such that vertices of ABCD lie on sides of PQRS then maximum possible area(in sq. unit) of rectangle PQRS is :
Two lines passing through (2, 3) parallel to coordinate axes. A circle of unit radius touches both the lines and lies on the origin side. Then the shortest distance of point (5,5) from the circle is: