List of top Chemistry Questions asked in JEE Main

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 \(x\).
Compounds of Xenon have one electron pair on central atom :
Out of the following which has maximum CFSE? ( consider with sign)
Which of the following is not ambidentate ligand
The ratio of silica to alumina in cement is:
Identify the correct statement about the compound GaAIC14
An unknown organic compound is heated with fuming \(HNO_3\). The reaction mixture is treated with aq \(BaCl_2\) solution which gives white precipitate. Identify the unknown organic compound.

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

For a metal ion, the calculated magnetic moment is 4.90 BM. This metal ion has ______ number of unpaired electrons.
During bleeding from cut \(FeCl_3\) is used to stop bleeding as
If the formula of borax is \(Na_2B_4Ox(OH)y.zH_2O\) , Find the value of x + y + z. 
How many of the following have five radial nodes ? 
5s, 6s, 7s, 6p and 4p 
In good quality cement ratio of lime total oxides of Si(SiO\(_2\)), Aluminium(Al\(_2\)O\(_3\)) and Iron(Fe\(_2\)O\(_3\)) should be as close as possible to _____ .
Which of the following acts as a stabilizer in the decomposition of H2O2?
Delicate balance of \(CO_2\) and \(O_2\) is not disturbed by:
Statement-1: Methyl orange is a weak acid 
Statement-2: Benzenoid form of methyl orange is deeply coloured than quinonoid form
Check out which of the above statement is true?
Read the following two statements
Statement I: Ionic radius of Li+ is greater than Mg++
Statement II: Lithium and magnesium can't form superoxide
Consider the following:
  1. D.D.T.
  2. Aldrin
  3. Sodium arsenite
  4. Sodium chlorate
How many of these are pesticides?
The pair of lanthanides will exceptionally high 3rd ionisation enthalpy than neighbouring elements:
Which of the following metals can be extracted through alkali leaching technique?
How many factors will contribute to a major role in covalent character of a compound.
  1. Polarising power of cation
  2. Polarisability of the anion
  3. Distortion caused by cation
  4. Polarisability of cation

Sulphur (S)-containing amino acids from the following are:
(a) Isoleucine
(b) Cysteine
(c) Lysine
(d) Methionine
(e) Glutamic acid

Which of the following shows an incorrect method of refining?
CH3CH2-Br \(\overrightarrow{Acetone}^{NaI}\) CH3-CH2-I+NaBr
Which of the following statement is correct ? 
Consider the reaction \(Cu^{2+} + X^- → Cu_2X_2 + X_2\).
X2 will be predominantly?