List of top Chemistry Questions asked in JEE Main

Which of the following compounds has the highest boiling point?
Which structure of protein is intact after coagulation of egg white on boiling?
What is the structure of Mn2(CO)10?
What is the correct IUPAC name of the given compound?
correct IUPAC name of the given compound
Which reagent on reacting with phenol gives salicylaldehyde?
Magnetic moment due to the motion of the electron in nth orbit of Bohr atom is proportional to nx. The value of x is
Number of isomeric products formed by monochlorination Of \(2-methyl \) \(butane\) in presence of sunlight is
A compound \((x)\) with molar mass \(108\) \(g\) \(mol^{-1}\) undergoes acetylation to give product with molar mass \(192\) \(g\) \(mol^{-1}\)
Ethylene glycol of \(x\) \(kg\) is mixed with \(18.6\) \(kg\) of solvent, \(24 °C\) depression in freezing point takes place. Calculate value of \(x\). (Given: \(K_1\) = \(1.6 °C/molal\) M.W. of ethylene glycol = \(62\) \(g/mol\))
Statement-I : Aniline on reaction with concentrated \(H_2SO_4\) at 475 K gives p-amino benzene sulphonic acid. This gives blood red colour with Lassaigne’s test. 
Statement-II : Aniline forms a salt with anhydrus \(AlCl_3\) in Friedel Craft’s reaction.
Why does oxygen show anomalous behavior ?
Find out sum of the coefficients of all the species involved in the balanced equation: \(2MnO_4+I^-\xrightarrow[{Medium}]{Alkaline}\)
Consider the following two statements Statement I: \(π\) \(2p\) bonding molecular orbital has low electron density above & below internuclear axis Statement II: \(π\times2p\) antibonding molecular orbital has only one nodal plane

IUPAC name of \(K_2MnO_4\) is

Match the following : 
(a) \([Cr(H_2O)_6]^{+3}\)(i) \(t^2_{2g}eg^0\)
(b) \([Fe(H_2O)_6]^{+3}\)(ii) \(t^3_{2g}eg^0\)
\((c) [Ni(H_2O)_6]^{+2}\)(iii) \(t^3_{2g}eg^2\)
(d) \([V(H_2O)_6]^{+3}\)(iv) \(t^6_{2g}eg^2\)
Choose the correct answers. 
  1. \(Mn_2O_7 \) is a oil at room temperature. 
  2. \(V_2O_4\) react with acid to give \(VO^{2+}\).
  3. \(CrO\) is a basic oxide.
  4. \(V_2O_5\) does not react with acids.
Quantum number for outermost electron of K-atom are given by
Which of the following has maximum ionic character?
Statement-I : Among \(15^{th}\) group hydrides reducing character decreases from
\(NH_3\) to \(BiH_3\).
Statement-II : \(E_2O_3\) and \(E_2O_5\) are always basic. [Where \(E\) is group \(15\) element]
Statement I: So disproportionates into \(H_2S_2O_3\) and \(S_2^-\) in alkaline medium 
Statement II: \(ClO_4^-\) undergoes disproportionation in acidic medium

From the vitamins \(A, B-1, B-6, B-12, C, D\), and \(K\), the number of vitamins that can be stored in our body is

Select the option of the correct property Paramagnetic & Diamagnetic \([Ni(CO_4)],[Ni(Cl_4)]^{-2}\)
Which of the following is least iconic
Best reducing agent among the given ions are:

If standard enthalpy of vaporization of \(CCl_4\) is \(30.5\) kJ/mol, find heat absorbed for vaporization of \(294 \) gm of \(CCl_4\). [Nearest integer] [in kJ/mol]