List of top Questions asked in JEE Main

Consider the network shown:

The equivalent resistance of the network is

Instantaneous current in a circuit is \(i(t)=[6+\sqrt54sin(2\pi + \pi/3)]\) A RMS value of current is

The equation of stationary wave is given as \(y=2A\sin(\frac{2\pi}{\lambda}\cdot nt) \cos (\frac{2\pi}{\lambda}\cdot x)\), then which of the following is not correct.

Which of the following is the correct structure of L- Glucose

Which of the following has a maximum dipole moment?

If emf of hydrogen electrode at 25 ℃ is zero in pure water, then pressure of H₂ in bar is?

For which of the following elements, only one oxidation state is possible?

Among the following, decreasing order of basic strength will be:
OH^-, H^-, HCOO^-, CH₃COO^-, ^-OR
(I)     (II)    (III)         (IV)          (V)

Which of the following is the correct order of first ionization enthalpy?

 \(\xrightarrow[Conc.HCL]{Zn-Hg}\) Product?

How many of the following compounds are sp³ hybridized

Given below are two statements :
Statement-1: Aldol condensation is caused by acidity of a hydrogens.
Statement-2: Cross aldol is not possible between Ph-CHO and CH₃CHO
In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following will not give Lassaigne's test?

Among the following, species that have one unpaired electron:

Decreasing order of the field strength of the following ligands will be: CO, CN^-, Cl^-, H₂O

If \(f(x) =   \begin{cases}  x-2       & \quad 0\leq x\leq2\\     -2  & \quad -2\leq x\leq0   \end{cases}\) and \(h(x) = f(|x|) + |f(x)|, \int\limits^{k}_{0} h(x) dx\) is equal to _____.(k>0)

Find the number of rational numbers in the expansion of \((2^{\frac{1}{5}} + 5^{\frac{1}{3}})^{15}\).

Three urn A, B, C, A has 7 red and 5 black balls, B has 5 red and 7 black balls, C has 6 red and 6 black balls. One urn is selected and black ball is taken out. Find probability that the selected urn is A.

Find \(\int\limits^{\frac{\pi}{2}}_{-\frac{\pi}{2}} \frac{\sin^2x}{1+2^x} \;dx\)

\(f(x)=\frac{2x^2-3x+8}{2x^2+3x+8}\), Then sum of maximum and minimum values of f(x) is:

The coefficient of x⁷ in (1-x-x²+x³)⁶

If (z)²+|z|=0 and if α is sum of roots and β is product of non-zero roots, then find 4(α²+β²)

If the length of focal chord of y² = 12x is 15 and if the distance of the focal chord from origin is p then 10p² is equal to:

Correct match for phasors of voltage and current for given elements is
a. Inductive
b. Capacitive
C. Resistive

Let relation defined as $(x_1, y_1) \,R (x_2, y_2)\, x_1 ≤ x_2,\, y_1 ≤ y_2$ and given that
(a) R is reflexive but not symmetric.
(b) R is transitive. then