List of top Questions asked in JEE Main- 2025

The shortest distance between the curves $ y^2 = 8x $ and $ x^2 + y^2 + 12y + 35 = 0 $ is:

Let the product of the focal distances of the point P(4, $ 2\sqrt{3} $) on the hyperbola H: $ \frac{x^2}{a^2} - \frac{y^2}{b^2} = 1 $ be 32. Let the length of the conjugate axis of H be p and the length of its latus rectum be q. Then $ p^2 + q^2 $ is equal to .....

Let the distance between two parallel lines be 5 units and a point $ P $ lies between the lines at a unit distance from one of them. An equilateral triangle $ POR $ is formed such that $ Q $ lies on one of the parallel lines, while $ R $ lies on the other. Then $ (QR)^2 $ is equal to _______.

Let $ |z_1 - 8 - 2i| \leq 1 $ and $ |z_2 - 2 + 6i| \leq 2 $, where $ z_1, z_2 \in \mathbb{C} $. Then the minimum value of $ |z_1 - z_2| $ is:

If the four distinct points $ (4, 6) $, $ (-1, 5) $, $ (0, 0) $ and $ (k, 3k) $ lie on a circle of radius $ r $, then $ 10k + r^2 $ is equal to

If the equation of the hyperbola with foci $ (4, 2) $ and $ (8, 2) $ is $ 3x^2 - y^2 - \alpha x + \beta y + \gamma = 0 $, then $ \alpha + \beta + \gamma $ is equal to _______

Identify correct conversion during acidic hydrolysis from the following: (A) Starch gives galactose.
(B) Cane sugar gives equal amount of glucose and fructose.
(C) Milk sugar gives glucose and galactose.
(D) Amylopectin gives glucose and fructose.
(E) Amylose gives only glucose.
Choose the correct answer from the options given below:

The total number of hydrogen bonds of a DNA-double Helix strand whose one strand has the following sequence of bases is _______ . $5^{\prime}-\mathrm{G}-\mathrm{G}-\mathrm{C}-\mathrm{A}-\mathrm{A}-\mathrm{A}-\mathrm{T}-\mathrm{C}-\mathrm{G}-\mathrm{G}-\mathrm{C}-\mathrm{T}-\mathrm{A}-3^{\prime}$

Which of the following oxidation reactions are carried out by both $ K_2Cr_2O_7 $ and $ KMnO_4 $ in acidic medium? A. $ I^- \rightarrow I_2 $ B. $ S^{2-} \rightarrow S $ C. $ Fe^{2+} \rightarrow Fe^{3+} $ D. $ I^- \rightarrow IO_3^- $ E. $ S_2O_3^{2-} \rightarrow SO_4^{2-} $ Choose the correct answer from the options given below:

The steam volatile compounds among the following are:

Choose the correct answer from the options given below:

For a $ {Mg} | {Mg}^{2+}(aq) || {Ag}^{+}(aq) | {Ag} $, the correct Nernst Equation is:

Given below are two statements:
Statement (I): The first ionization energy of Pb is greater than that of Sn.
Statement (II): The first ionization energy of Ge is greater than that of Si.

In light of the above statements, choose the correct answer from the options given below:

The heat of formation of $ \text{SO}_2(g) $ is given by: \[ S(g) + \frac{3}{2} O_2(g) \rightarrow SO_3(g) + 2x \, \text{kcal} \] \[ SO_2(g) + \frac{1}{2} O_2(g) \rightarrow SO_3(g) + y \, \text{kcal} \]

Which of the following arrangements with respect to their reactivity in nucleophilic addition reaction is correct?

The product (A) formed in the following reaction sequence is:

Which of the following oxidation reactions are carried out by both $ K_2Cr_2O_7 $ and $ KMnO_4 $ in acidic medium?
A. $ I^- \rightarrow I_2 $
B. $ S^{2-} \rightarrow S $
C. $ Fe^{2+} \rightarrow Fe^{3+} $
D. $ I^- \rightarrow IO_3^- $
E. $ S_2O_3^{2-} \rightarrow SO_4^{2-} $
Choose the correct answer from the options given below:

Match the LIST-I with LIST-II (Redox Reactions).

Choose the correct answer from the options given below:

Given below are two statements:

Statement (I): The first ionization energy of Pb is greater than that of Sn.
Statement (II): The first ionization energy of Ge is greater than that of Si.

In light of the above statements, choose the correct answer from the options given below:

The standard reduction potential values of some of the p-block ions are given below. Predict the one with the strongest oxidizing capacity.

$\mathrm{KMnO}_{4}$ acts as an oxidising agent in acidic medium. ' X ' is the difference between the oxidation states of Mn in reactant and product. ' Y ' is the number of ' d ' electrons present in the brown red precipitate formed at the end of the acetate ion test with neutral ferric chloride. The value of $\mathrm{X}+\mathrm{Y}$ is _______ .

The species which does not undergo disproportionation reaction is:

In Carius method for estimation of halogens, 180 mg of an organic compound produced 143.5 mg of AgCl. The percentage composition of chlorine in the compound is ___________%. [Given: Molar mass in g mol$^{-1}$ of Ag = 108, Cl = 35.5]

Given below are two statements: Statement (I): The boiling points of alcohols and phenols increase with increase in the number of C-atoms.
Statement (II): The boiling points of alcohols and phenols are higher in comparison to other classes of compounds such as ethers and haloalkanes. In the light of the above statements, choose the correct answer from the options given below:

The purification method based on the following physical transformation is: \[ {Solid} \xrightarrow{{Heat}} {Vapour} \xrightarrow{{Cool}} {Solid} \]

Consider an elementary reaction: \[ A(g) + B(g) \rightarrow C(g) + D(g) \] If the volume of the reaction mixture is suddenly reduced to $ \frac{1}{3} $ of its initial volume, the reaction rate will become $ x $ times of the original reaction rate. The value of $ x $ is: