List of top Questions asked in JEE Main

Which among the following have a single unpaired electron?
N2, 02, CN-, O2-, C22- , N2-
Which of the following is colorless?
Consider the following compound.
Correct order of their basicity is
Correct order of their basicity is:
Arrange the following in increasing order of acidity.
increasing order of acidity. increasing order of acidity. increasing order of acidity. increasing order of acidity. increasing order of acidity.
Which of the following orbitals has the highest energy?
Number of ambidentate nucleophiles among the following is:
CN-, SCN- NO2-, CH3COO-, C2042-, NH2-, SO42-
Equal volume of 1 M HCI and 1 M H2SO4 neutralized by dil. NaOH and heat released is x and y kcal respectively, then which is correct?
Chemical formula of compound present in tooth enamel?
Consider the following electronic configuration:
Cu2+ = [Ar] 3d44s0
Cu+ = [Ar] 3d104s0
Which option is correct?
Which of the following has sp2 hybridisation?
For the reaction:
Gattermann–Koch reaction
Product (P) is
A galvanometer having resistance of 200 Ω shows full deflection at 20 μA. If the galvanometer has to measure current up to 20 mA, the shunt resistance required is
The equivalent energy of 1 gm mass is equal to:
Velocity of a particle of mass m as a function of displacement x is given by v = ɑ√x. Work done to move it from x = 0 to x = d is:
In the pulley-block system shown, the pulley and the block are ideal. If the acceleration of the block is g/8, find m1:m2 (Given m2 > m1)
acceleration of the block is g/8, find m1:m2
The dimension of latent heat is:
Molecular orbital σ* represents:
If solution of differential equation xdy - ydx = xy(xdy - ydx) and y(1) = 1 is α|y| = |x|e(xy - β) then (α + β) is equal to
A triangle is drawn inside a bounded region of y2 = 2x and x = 24. Then maximum area of triangle is
Bag X contains five one-rupee coins, four five rupee coins. Bag Y contains 4 one rupee and 5 five rupees. Bag Z contains 3 one-rupee coins and 6 five rupee coins. If 1 rupee coin is selected at random, what is the probability it is drawn from bag Y?
A circle x2 + y2 = 8 and a parabola y2 = 2x are given. Find area bounded by these two curves in first quadrant which lie inside the circle and outside the parabola.
Two points (5, 2) and (2, a). Line passes through these points makes an angle of π/4 at origin. The product of all values of a is equal to
sum of elements of 10th row,Then the sum of elements of 10th row.
Number of 5 letters words made from the word “MATHEMATICS” is equal to
How many carbon atoms are there in a molecule of tyrosine?