List of top Chemistry Questions

The detergent action of soap is due to its
The density of nitrogen gas prepared from air is slightly greater than that of nitrogen prepared by a chemical reaction from a compound of nitrogen due to the presence of the following in aerial nitrogen
The depression of freezing point is directly proportional to
The density of a metal which crystallises in $bcc$ lattice with unit cell edge length $300\,pm$ and molar mass $50 \,g \,mol^{-1}$ will be
The density of neon will be highest at
The density of a cube is measured by measuring its mass and the length of its side. If the maximum errors in the measurement of mass and length are $4\%$ and $3\%$, respectively, then the maximum error in the measurement of the density is
The decomposition of $ {KClO_3}$ to KCl and $ {O_2}$ on heating is an example of
The decomposition of a hydrocarbon follows the equation $k=\left(4.5\times10^{11}s^{-1}\right)e^{-28000 K /T}.$ What will be the value of activation energy?
The de-Broglie equation suggests that an electron has
The curve showing the variation of adsorption with pressure at constant temperature is called
The critical micelle concentration $(CMC)$ is defined as
The covalent nature of $AlCl_3$ can be justified orthe basis of
The correct structure of zwitter ion of sulphanilic acid is
The correct structure of monomers of buna-$S$ is
The correct sequence of decrease in the bond angles of the following hydrides is
The correct sequence of the oxidation state of underlined elements is $Na_{2}\left[\frac{Fe}{ }\left(CN\right)_{5}N O\right]$, $K_{2} \frac{Ta}{ }F_{7}$, $Mg_{2}P_{2}O_{7}$, $Na_{2} \frac{S_{4}}{ }O_{6}$, $\frac{N_{3}}{ }H $
The correct relationship between free energy change in a reaction and the corresponding equilibrium constant, $K_c$ is
The correct order of the packing efficiency in different types of unit cells is
The correct order of leaving group ability in nucleophilic substitution reaction is
The correct order of the increasing basicity of methyl amine, ammonia and aniline is
The correct order of reactivity of halogens with alkalies is
The correct order of radii is
The correct order of increasing energy of atomic orbitals is
The correct order of electronegativity among halogens is :
The correct order of electron affinity among the following is