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.

Statement-1: \( \text{ClF}_3 \) has 3 possible structures. 
Statement-2: \( \text{III} \) is the most stable structure due to least lone pair-bond pair (lp-bp) repulsion. 

 Which of the following options is correct?

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: $$ {C}_6{H}_5{CN} \xrightarrow{{HCl}} (A) \xrightarrow{{AgCN}} (B) $$  
For a reaction, $$ {N}_2{O}_5(g) \rightarrow 2{NO}_2(g) + \frac{1}{2} {O}_2(g) $$ in a constant volume container, no products were present initially. The final pressure of the system when 50% of the reaction gets completed is: 

Total number of nucleophiles from the following is: \(\text{NH}_3, PhSH, (H_3C_2S)_2, H_2C = CH_2, OH−, H_3O+, (CH_3)_2CO, NCH_3\)

Which of the following is the correct order of basic strength of amines in aqueous medium?
Consider ‘n’ is the number of lone pair of electrons present in the equatorial position of the most stable structure of \( \text{ClF}_3 \). The ions from the following with ‘n’ number of unpaired electrons are:
A. \( \text{V}^{3+} \)  
B. \( \text{Ti}^{3+} \) 
C. \( \text{Cu}^{2+} \) 
D. \( \text{Ni}^{2+} \) 
E. \( \text{Ti}^{2+} \)
Choose the correct answer from the options given below:
The metal ion whose electronic configuration is not affected by the nature of the ligand and which gives a violet color in non-luminous flame under hot condition in borax bead test is:
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?
The product B formed in the following reaction sequence is: \[ {C}_6{H}_5{CN} \xrightarrow{{HCl}} (A) \xrightarrow{{AgCN}} (B) \]
product B formed in the following reaction sequence

Find the IUPAC name of the compound.