List of top Chemistry Questions asked in JEE Main

In a container at a constant temperature , arrange the RMS velocity of the following: Ne, Cl2 , UF6

Correct order of first ionization energy of Li, Be, C, B, N, O, F
Which of the following can be represented as a meridional isomer?

Find the number of atoms per unit cell if edge length is 300pm, density = 3 g/cm3 , molecular mass = 40 g(nearest integer)

Identify the correct statement about the compound GaAIC14
pH of 1 litre of HCL solution is 1. How much water (in litres) is added to make pH=2?

Match the terms in Column-I with their description in Column-II and choose the correct option:

 Column 1(Type of hydride) Column II
A.Electron1.MgH2
B.Electron precise2.HF
C.Electron rich3.CH4
D.Saline Hydride4.B2H6

Consider the following reaction sequence: \([CaCl_2 + Na_2CO_3 → X+Y] → Z\)

Number of molecules and moles in 2.8375 litre of O2 at STP.
The number of bent-shaped molecule(s) from the following is_______? 
SO2, O3, I3-, N3-
The degree of dissociation of monobasic acid is 0 3 By what percent is the observed depression in freezing point greater than the calculated depression in freezing point ?
The Sum of number of lone pairs in central atom in IF5 and IF7 is:
At constant temperature, a gas is at a pressure of 940.3 mm Hg. The pressure at which its volume decreases by 40% is mm Hg. (Nearest integer)
Match the Column:
 Column I Column II
(A).ClO2-(1).Linear
(B).N3-(2).Tetrahedral
(C).NH4+(3).Bent
(D).SF4(4).See-Saw
For a metal ion magnetic moment is calculated to be 4.9BM. Find the number of unpaired.
How many electrons are gained by MnOΘ4 in strongly alkaline medium?
For a first-order reaction, if the value of \(t_{\frac{1}{2}}\) is T, then the value of \(t_{\frac{7}{8}}\) will be_____ T.
Find out difference in oxidation state of Xe in completely Hydrolysed form of XeF4 and XeF6
NH3, NO, N2, F2, CO, CO2, H2O, and XeF4. Fill the number of above molecules having only two lone pair of electrons.
What is the ratio of σ and pi bonds in pyrophosphoric acid ?
IUPAC name of the compound C7H12O2?
Find out the oxidation number of the central metal atom of fe(CO)5 , VO2+, and WO3. Then calculate the sum of their oxidation state.
Ksp of BaSO4 is 8 × 10–11. If the solubility in presence of 0.1 M CaSO4 is?
The solubility product of BaSO₄ is \(1 \times 10^{-10}\) at 298 K. The solubility of BaSO₄ in 0.1 M K₂SO₄(aq) is \(x \times 10^{-9}\) g L⁻¹. Calculate the value of \(x\).
How many of the following have five radial nodes ? 
5s, 6s, 7s, 6p and 4p