List of top Chemistry Questions

The increasing order of specific charge for electron(e), proton(p), neutron(n) and alpha particle $(\alpha)$ is
The increasing order of relative stabilities of the carbocations is given below: This can be explained on the basis of
The increasing order of reducing power of the halogen acids is
The increasing order of the first ionisation enthalpies of the elements B, P, S and F (lowest first) is
The increasing order of electron donating inductive effect of alkyl groups is
The important oxide ore of iron is
The increase in boiling point of a solution containing 0.6 g urea in 200 gram water is 0.50$^\circ$C.Find the molal elevation constant
The ignition mixture in Alumino-thermite process contains a mixture of
The important ores of tin and lead are
The ideal gas equation connecting pressure (P), volume (V) and absolute temperature (T) is where $k_B$ is the Boltzmann constant and N is the number of molecules.
The hybrid state of Br in $BrF_5$ is
The hybrid state of C atom in $C_2H_2$ is same as that of carbon in
The hybridisation of sulphur in $SO_2$ is
The general molecular formula of aldehydes and ketones is :
The excluded volume per molecule of a gas is ________ times the actual volume of the gas molecule
The example of heteropolar sol. is
The enthalpies of combustion of carbon and carbon monoxide are -393.5 and -283 $kJ mol^{-1}$ respectively. The enthalpy of formation of carbon monoxide per mole is
The electronic configuration of four atoms are given in brackets: $L\left(1s^{2} 2s^{2} 2p^{1}\right); $ $M\left(1s^{2} 2s^{2} 2p^{5}\right); $ $Q\left(1s^{2} 2s^{2} 2p^{6} 3s^{1}\right); $ $R\left(1s^{2} 2s^{2} 2p^{2}\right);$ The element that would most readily form a diatomic molecule is
The effective atomic number of Fe in $Fe(CO)_5$ is
The edge length of the unit cell of $NaCl$ crystal lattice is 5.623 ?, density is 2.16 $g cm^{-3}$ and the molar mass of $NaCl$ is $58.5\, g$ $mol^{-1}$. The number of moles per unit cell is
The ease of adsorption of the hydrated alkali metal' ions on an ion-exchange resins follows the order:
The ease of liquifiaction of noble gases decreases in the order
The drain cleaner, Drainex contains small bits of aluminium which react with caustic soda to produce dihydrogen. What volume of dihydrogen at 20 ?C and one bar will be released when 0.15 g of aluminium reacts?
The dissolution of $ {Al(OH)_3}$ by a solution of NaOH results in the formation of
The dissociation constants of two acids $HA_1$ and $HA_2$ are $3.0\, \times \, 10^{-4}$ and $1.8\, \times \,10^{-5}$ respectively.The relative strengths of the acids will be