List of top Chemistry Questions asked in JEE Advanced

The correct statement(s) concerning the structures $E, F$ and $G$ is/are
2.5 ml of . $ \frac{ 2 }{ 5 } $ M weak monoacidic base $ ( K_p = 1 \times 10^{ - 12 } \, at \, 25^\circ$ C) is titrated with $ \frac{ 2 }{ 1 5 } $ M HCI in water at $ 25^\circ$ C. The concentration of H ' at equivalence point is $ ( K_{ sp } = 1 \times 10^{ - 14 } \, at \, 25^\circ C) $
The IUPAC name of $ [Ni(NH_3 )_4][NiCl_4]$ is
Among the following surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient conditions is
A gas described by van der Waals' equation
Among the following, the coloured compound is
Native silver metal forms a water soluble complex with a dilute aqueous solution of $NaCN$ in the presence of
Hyperconjugation involves overlap of the following orbitals
The correct statement(s) about the compound given below is/are
Extraction of zinc from zinc blende is achieved by
Consider a titration of potassium dichromate with acidified Mohr?s salt solution using diphenylamine as indicator. The number of moles of Mohr?s salt required per mole of dichromate is :
In the following reaction, The produce X is
The compound(s) formed upon combustion of sodium metal in excess air is (are)
Among the following metal carbonyls, the $C-O$ bond order is lowest in
A solution of a metal ion when treated with $KI$ gives a red precipitate which dissolves in excess $KI$ to give a colourless solution. Moreover, the solution of metal ion on treatment with a solution of cobalt (II) thiocyanate gives rise to a deep blue crystalline precipitate. The metal ion is
The percentage of $p$-character in the orbitals forming $P-P$ bonds in $P_4$ is
Among the following, the least stable resonance structure is
The reaction ${B(OH)_3 + NaOH <=> Na[B(OH)_4]}$ $ { B(OH)_3 + NaOH <=> NaBO_2 + 2 \, H_2O}$ can be made to proceed to forward direction by the addition of
$ CH_3 - CH = CH_2+NOCl \longrightarrow P; $ Identify the adduct.
$ Ag^+ \, + NH_3 \rightleftharpoons [ Ag ( NH_3 ) ]^+ ; K_1 = 3.5 \times 10^{ - 3 } $ $ [ Ag ( NH_3 )]^+ \, + NH_3 \rightleftharpoons [ Ag (NH_3 )_2 ]^+ ; K_2 = 1.7 \times 10^{ - 3 } $ then the formation constant of $ [ Ag (NH_3)_2]^+ $ is...
If the bond length of CO bond in carbon monoxide is $1.128 \mathring{A}, $ then what is the value of CO bond length in $Fe(CO)_5? $
The smallest ketone and its next homologue are reacted with $NH_2OH$ to form oxime
(I) 1, 2-dihydroxy benzene (II) 1, 3-dihydroxy benzene (III) 1, 4-dihydroxy benzene (IV) Hydroxy benzene The increasing order of boiling points of above mentioned alcohols is
$CuSO_4$decolourises on addition of KCN, the product is
A solution when diluted with $H_2 0$ and boiled, it gives a white precipitate. On addition of excess $NH_4 CI / NH_4 0H$, the volume of precipitate decreases leaving behind a white gelatinous precipitate. Identify the precipitate which dissolves in $NH_4 OH / NH_4 CI.$