List of top Chemistry Questions

Number of moles of $MnO^{-}_4$ required to oxidise one mole of ferrous oxalate completely in acidic medium will be
Which will not go for diazotization ?
The degree of dissociation of $XY$ in case of following reaction is found to be $ 0.4 $ from vapour density measurement. If the observed vapour density of $X Y$ be $100$ then its molecular weight is $ XY\to X+Y $
Amines behave as
An element with atomic number $21$ is a
The angular shape of ozone molecule $ (O_3 )$ consists of
In the reaction; $Fe ( OH )_{3( s )} \rightleftharpoons Fe ^{3+}{ }_{( aq )}+3 OH _{\text {(aq) }}^{-}$, if the concentration of $OH ^{-}$ ions is decreased by $\frac{1}{4}$ times, then the equilibrium concentration of $Fe ^{3+}$ will increase by,
The value of equilibrium constant of the reaction, $ HI(g) \rightleftharpoons \frac{1}{2} H_2 (g) + \frac{1}{2} I_2 (g)\, \, is\, \, 8.0 $ . The equilibrium constant of the reaction, $ H_2 (g) + I_2 (g) \rightleftharpoons 2HI(g) $ Will be
For the reaction $Fe_2O_3 +3CO \rightarrow 2Fe + 3CO_2$ the volume of carbon monoxide required to reduce one mole of ferric oxide is
The increasing order of the rate of HCN addition to compounds A-D is : (A) HCHO $(B)CH_{3} COCH_{3}$ $\left(C\right)phCOCH_{3}$ $\left(D\right)phcoph$
The standard free energy change of a reaction is $\Delta G^{\circ}$ = - $115\,kJ$ at $298 \,K$. Calculate the equilibrium constant $k_p$ in $\log k_p$ $ (R = 8.314 \,Jk^{-1} mol^{-1}).$
The oxidation number of oxygen in $KO _{3}, Na _{2} O _{2}$ is
The magnetic moment of a salt containing $Zn ^{2+}$ ion is
Reaction of $PCl _{3}$ and $PhMgBr$ would give
The molar conductivities of $KCl, NaCl$ and $KNO_3$ are $152, 128 $ and $111\, S\,cm^2\, mol^{-1}$ respectively. What is the molar conductivity of $NaNO_3$?
The IUPAC name of the given compound $\left[ Co \left( NH _{3}\right)_{5} Cl \right] Cl _{2}$ is
The number of unpaired electrons calculated in $[Co (NH_3)_6]^{3+}$ and $Co (F_6)Z^{3-}$ are
The number of formula units of calcium fluoride, $CaF _{2}$ present in $146.4\, g$ of $CaF _{2}$ (the molar mass of $CaF _{2}$ is $78.08 \,g / mol$ ) is
The number of hydrogen atoms present in $25.6\, g$ of sucrose $\left( C _{12} H _{22} O _{11}\right)$ which has a molar mass of $342.3\, g$ is
A gas deviates from ideal behaviour at a high pressure because its molecules
The monomers of buna-$S$ rubber are
Mesomeric effect involves delocalisation of
The calculated bond order of superoxide ion $(O_2^- )$ is
Which of the following electrolytic solutions has the least specific conductance ?
Which of the following is considered as an anticancer species?