List of top Chemistry Questions

The order of rate of hydrolysis of alkyl halides: $1^{\circ}, 2^{\circ}, 3^{\circ}$ and $CH_3X$ by $S_N2$ pathway is
The order ionization energies of different orbital is
The order HF < HCl < HBr < Hl corresponds to which of the following properties ?
The orbital configuration oi $_{24}Cr$ is $3d^5 4s^1$. The number of unpaired electrons in $Cr^{3+} (g)$ is
The only oxidation state of alkali metals in their compounds is
The one which does not show variable valency is
The oil used in the floatation method for the purification of ores is
The octahedral voids in a face-centred cubic (fee or ccp) structure are located at
The numerical value of universal gas constant (R)depends upon
The numerical value of N/n (where N is the number of molecules in a given sample of gas and n is the number of moles of the gas) is
The number of vacant orbitals in the valence shell of phosphorus is
The number of unpaired electrons in gaseous species of $Mn^{3+}$, $Cr^{3+}$ and $V^{3+}$ respectively are_____and the most stable species is_____.
The number of $sp^2-s$ sigma bonds in benzene are
The number of structural isomers of $C_3H_9N$ are
The number of radial nodes and angular nodes for d-orbital can be represented as
The number of P-O-H and P-H bonds in orthophosphorus acid molecule are relatively
The number of P-O-H links in orthophosphoric acid molecule is
The number of neutrons in 1.8 g of water will approximately be
The number of molecules in 100m L of 0.02N $H_2SO_4$ is
The number of moles of $ {H_2}$ in 0.224 litre of hydrogen gas at STP (273 K, 1 atm) is :
The number of isomers ketones with formula $ {C_6H_{12}O}$ are
The number of isomers exhibited by $[Cr(NH_3)_3Cl_3]$ is
The number of half filled orbitals in the valence shell of halogens is
The number of ether metamers represented bymolecular formula $C_4H_{10}O$ is
The number of $Cl^{-}$ ions required to form ccp lattice of NaCl structure are