List of top Chemistry Questions asked in JEE Main

If \( x |x - 3| + 3 |x - 2| + 1 = 0 \), then the number of real solutions is.

Consider the following graph between Rate Constant (K) and \( \frac{1}{T} \): Based on the graph, determine the correct order of activation energies \( E_{a1}, E_{a2}, \) and \( E_{a3} \).

Statement-1: Alcohol is prepared from alkyl halide in the presence of aqueous KOH by elimination.
Statement-2: Alkenes are prepared from alkyl halide with alcoholic KOH by $\beta$-elimination.
Which of the following options is correct? 1. Statement-1 and Statement-2 are correct.
2. Statement-1 and Statement-2 are incorrect.
3. Statement-1 is true and Statement-2 is false.
4. Statement-1 is false and Statement-2 is true.
Maximum IE and minimum IE of group 13 elements are:
Maximum IE and minimum IE of group 13 elements are:
Total number of electrons in chromium (Z = 24) for which the value of azimuthal quantum number (l) is 1 and 2.
Given below are two statements: - Assertion (A): Sodium on reaction with alcohols liberates \( \text{H}_2 \) gas. - Reason (R): Alcohols are acidic in nature. In the light of the above statements, choose the correct answer from the options below:
Transition metal belonging to the 3d series having the lowest enthalpy of atomization in its most stable oxidation state forms oxide \( \text{MO} \). Nature of the oxide is:
A compound having molecular formula \( \text{MX}_3 \) has van't Hoff factor of 2. What is the degree of dissociation?
Identify the essential amino acids from below:
(A) Valine
(B) Proline
(C) Lysine
(D) Threonine
(E) Tyrosine
Choose the correct answer from the options given below:
Consider the reaction: $$ X_2Y(g) \rightleftharpoons X_2(g) + \frac{1}{2} Y_2(g) $$ The equation representing the correct relationship between the degree of dissociation \( x \) of \( X_2Y(g) \) with its equilibrium constant \( K_p \) is: 
The product B formed in the following reaction sequence is: $$ {C}_6{H}_5{CN} \xrightarrow{{HCl}} (A) \xrightarrow{{AgCN}} (B) $$  
Which of the following is the correct order of basic strength of amines in aqueous medium?
Incorrect order of atomic radius is?
In the following, the number of paramagnetic molecules are: O\(_2\), N\(_2\), F\(_2\), B\(_2\), Cl\(_2\).
One mole of an ideal gas expands from 10 dm\(^3\) to 20 dm\(^3\) through an isothermal reversible process. Find \( \Delta U \), \( q \), and \( w \).
Which of the following is the ratio of 5\(^\text{th}\) Bohr orbit \( (r_5) \) of He\(^+\) & Li\(^{2+}\)?
Which of the following pair of ions have equal number of unpaired electrons?

Find the IUPAC name of the compound. 

Area bounded by \( |x - y| \leq y \leq 4\sqrt{x} \) is equal to (in square units):
Fat soluble vitamin is:
Statement 1: Hyper conjugation is not a permanent effect Statement 2: In general, greater the number of Alkyl groups attached to a positively charged carbon atom, greater is the Hyper conjugation interaction and stabilization of the cation.
At 715 mm pressure, 300 K, volume of N\(_2\) (g) evolved was 80 mL by a 0.4 g sample of organic compound. Find the percentage of N in the organic compound. Given aqueous tension at 300 K = 15 mm.
Amount of magnesium (Mg) (in mg) required to liberate 224 mL of \( H_2 \) gas at STP, when reacted with HCl.

Match the following List-I with List-II and choose the correct option: List-I (Compounds) | List-II (Shape and Hybridisation) (A) PF\(_{3}\) (I) Tetrahedral and sp\(^3\) (B) SF\(_{6}\) (III) Octahedral and sp\(^3\)d\(^2\) (C) Ni(CO)\(_{4}\) (I) Tetrahedral and sp\(^3\) (D) [PtCl\(_{4}\)]\(^{2-}\) (II) Square planar and dsp\(^2\)