List of top Questions asked in JEE Main

Calculate the Molarity of a Solution having density = $1.5$ $g/ml$. $\%(w/w)$ of Solute is $36\%$ and Molecular weight of Solute is $36$ $g/mol$

Alkaline KMnO4 Oxidised iodide to a particular product (A). Determine the oxidation state of iodine in the compound (A).

In the following reactions, find the product A and B

Appearance of blood red colour on treatment of the sodium fusion extract of an organic compound with FeSO₄ in presence of concentrated H₂SO₄ indicates the presence of element(s).

The major product formed in the following reaction is-

Energy difference between actual structure and its most stable resonating structure having least energy is called

The interaction between π bond and lone pair of electrons present on an adjacent atom is responsible for

A block of mass 100 kg slides over a distance of 10 m on a horizontal surface. If the coefficient of friction between the surfaces is 0.4, then the work done against friction (in J) is:

At what distance above and below the surface of the earth a body will have the same weight (take radius of earth as R)?

For $ 0 < a < 1 $, the value of the integral \[ \int_{0}^{\frac{\pi}{2}} \frac{dx}{1 - 2a \cos x + a^2} \] is:

The 20^th term from the end of the progression \[ 20, 19, \frac{1}{4}, \frac{1}{2}, \frac{3}{4}, \ldots, -129 \frac{1}{4} \] is:

If $\frac{dy}{dx}$= $\frac{(x+y-2)}{(x-y)}$, and y(0) = 2, find y(2)

If $ 2 \tan^2 \theta - 5 \sec \theta = 1 $ has exactly 7 solutions in the interval $\left[ 0, \frac{n\pi}{2} \right],$ for the least value of $ n \in \mathbb{N} $ then $\sum_{k=1}^{n} \frac{k}{2^k}$ is equal to:

The integral $$ \int \frac{x^8 - x^2}{(x^{12} + 3x^6 + 1) \tan^{-1}\left( \frac{x^3 + 1}{x^3} \right)} \, dx $$ is equal to:

Coefficient of x²⁰¹² in (1-x)²⁰⁰⁸(1+x+x²)²⁰⁰⁷ is equal to ___

Identify the following species in which $d^2sp^3$ hybridization is shown by the central atom.

Which structure of protein is intact after coagulation of egg white on boiling?

Given below are two statements:
Statement (I) : In the Lanthanoids, the formation of Ce⁺⁴ is favoured by its noble gas configuration.
Statement (II) : Ce⁺⁴ is a strong oxidant reverting to the common +3 state.
In the light of the above statements, choose the most appropriate answer from the options given below:

Phenolic group can be identified by a positive

The quantity which changes with temperature: