List of top Chemistry Questions

Jahn-Teller effect is not observed in high spin complexes of
When copper is heated with conc. $HNO_3$ it produces :
Which is the correct statement for the given acids ?
Boric acid is an acid because its molecule
For a sample of perfect gas when its pressure is changed isothermally from $p_i$ to $p_f$, the entropy change is given by
The rate of a first order reaction is $0.04 mol \, l^{-1} \, s^{-1}$ at 10 seconds and $0.03 \, mol \, l^{-1} \, s^{-1}$ at 20 seconds after initiation of the reaction. The half-life period of the reaction is :
The protein present in the hair is
The IUPAC name of $\left[ Co \left( NH _{3}\right)_{5} ONO \right]^{2+}$ ion is
Lithium has a $bcc$ structure. Its density is $530 \, kg \, m^{-3}$ and its atomic mass is $6.94 \, g \, mol^{-1}$. Calculate the edge length of a unit cell of Lithium metal. ($NA = 6.02 \times 10^{23} \, mol^{-1}$)
Which of the following compound is most acidic ?
Equilibrium constants $K_1$, and $K_2$ for the following equilibria I. $NO _{( g )}+\frac{1}{2} O _{2( g )} \rightleftharpoons NO _{2( g )}$ II. $2 NO _{2( g )} \rightleftharpoons 2 NO _{( g )}+ O _{2( g )}$ are related as :
The half-life period of a order reaction is 60 minutes What percentage will be left over after 240 minutes ?
The spin only magnetic moment $ (\mu_s) $ of a complex $ [Mn(Br_4)]^{4-} $ is $ 5.9\, BM $ . The geometry of the complex will be
Which one of the following compounds shows the presence of intramolecular hydrogen bond?
The hybridizations of atomic orbitals of nitrogen in $NO _{2}^{+}, NO _{3}^{-}$ and $NH _{4}^{+}$ respectively are
Which of the following pairs of d-orbitals will have electron density along the axes?
As per $IUPAC$ norms, the name of the complex $[Co(en)_2(ONO)Cl]Cl$ is
The shape of $XeF_6$ is,
An organic compound X is oxidised by using acidified $K_2Cr_2O_7$ solution. The product obtained reacts with phenyl hydrazine but does not answer silver mirror test. The compound X is,
Which of the following is incorrect in a galvanic cell ?
The hottest region of Bunsen flame shown in the figure below is :
Van-Arkel method of refining Zirconium involves,

When an electrolyte is dissociated in solution, the van't Hoff factor \((i)\) is,

Group 15 elements have more electron gain enthalpy than group 16-elements. The correct reason for this is
For hydrogen-oxygen fuel cell, the cell reaction is \(2H_2(g)+O_2(g)\rightarrow2H_2O(I)\), If \(\triangle{G}\degree_{f}(H_2O)=-237.2KJmol^{-1}\) then emf ofthis cell is