List of top Chemistry Questions

Among the following, the correct statement is
In qualitative inorganic analysis of metal ions, the ion which precipitates as sulfide in the presence of H$_2$S in warm dilute HCl is
The ratio of the nearest neighbor atomic distances in body-centered cubic (bcc) and face-centered cubic (fcc) crystals with the same unit cell edge length is
The correct statement regarding the observed magnetic properties of NO, O$_2$, B$_2$ and C$_2$ in their ground state is
The correct option for the number of bending modes of vibration in each of H$_2$O, CS$_2$, and SO$_2$ molecules, respectively, is
According to the kinetic theory of gases, the ratio of the root mean square velocity of molecular oxygen and molecular hydrogen at 300 K is
The half-life of the chemical reaction, A \(\rightarrow\) Product, for initial reactant concentrations of 0.1 and 0.4 mol L\(^{-1}\) are 200 and 50 s, respectively. The order of the reaction is
The total number of degrees of freedom of an HBr molecule that is constrained to translate along a straight line but does not have any constraints for its rotation and vibration is
Correct trend in the bond order is
The correct option for the metal ion present in the active site of myoglobin, hemocyanin and vitamin B12, respectively, is
The number of vibrational mode(s) of a carbon dioxide molecule that can be detected using infrared spectroscopy is

H\(_2\) reacts with trans-(Ph\(_3\))\(_2\)Ir(CO)Cl to primarily produce .......... 

Among the following species, the metal center that has the highest number of unpaired electrons is .............
The value of \(K_c\) for the reaction : \({A + 3B\rightleftharpoons2C}\) at \(400^\circ C\) is \(0.5.\) Calculate the value of \(K_P\)
Glucose when heated with $CH_3OH$ in presence of dry $HCl$ gas gives $\alpha$- and $\beta$-methyl glucosides because it contains:
At low pressure, the van der Waal's equation is reduced to
\({A->[K_2Cr_2O_7][dil.H_2SO_4]B->[CH_3MgI][H_2O]CH3}\) the reactant A is
Copper sulphate solution reacts with $KCN$ to give
In a hydrogen - oxygen fuel cell, combustion of hydrogen occurs to :
When acetylene is passed into methanol at $160- 200�C$ in the presence of a small amount of potassium methoxide under pressure, the following is formed -

The work done in ergs for the reversible expansion of one mole of an ideal gas from a volume of 10 liters to 20 liters at 25° is

For the reaction $N_{2}+3H_{2} \rightarrow 2NH_{3}$ if $\frac{\Delta\left[NH_{3}\right]}{\Delta t}=2\times10^{-4}\,mol\,l^{-1}s^{-1},$ then value of $\frac{-\Delta\left[H_{2}\right]}{\Delta t}$ would be
Bragg's law is given by the which of the following equation?
Deep sea divers used to respirate a mixture of
The electrode potentials for ${Cu^{2+}(aq)+e^-->Cu^+(aq)}$ and ${Cu^{+}(aq)+e^-->Cu(s)}$ are $+ 0.15\, V$ and $+ 0.50 \,V$, respectively. The value of $E^?_{Cu^{2+}/Cu}$ will be :