List of top Chemistry Questions

The set of quantum numbers $ n=4,l=0 $ and $ s=+\frac{1}{2} $ correspond to the most loosely bound, ground state electron of which one of the following atoms?
Which one of the following is aromatic?
The solubility product of a sparingly soluble metal hydroxide $M ( OH )_{2}$ at $298 \,K$ is $5 \times 10^{-16} mol ^{3} d m^{-9}$. The $pH$ value of its aqueous and saturated solution is

Parkinson's disease is linked to abnormalities in the levels of dopamine in the body. The structure of dopamine is
Aluminium reacts with NaOH and forms compound 'X'. If the coordination number of aluminium in 'X' is 6, the correct formula of X is
The total number of acyclic structural and optical isomers possible for a hydrocarbon of molecular formula $ C_{7}H_{16} $ is
The bacteriostatic antibiotic among the following is
In which one of the following equilibria, the increase of pressure over the equilibrium will favour the reaction?
When an excess and a very dilute aqueous solution of $ KI $ is added to a very dilute aqueous solution of silver nitrate, the colloidal particles of silver iodide are associated with the Helmholtz double layer
Lattice energy of an ionic compound depends upon
For a first order reaction at 27$^{\circ}$C, the ratio of time required for 75% completion to 25% completion of reaction is
The main difference between formic acid and acetic acid is that formic acid is
Which one of the following is the correct quadratic form of the Ostwald's dilution law equation?
The one which decreases with dilution is
The characteristic not related to alkali metal is
The ore that is concentrated by Froth Floatation process is
A covalent molecule $AB_3$ has pyramidal structure. The number of lone pair and bond pair electrons in the molecule are respectively
In electrophillic aromatic substitution reaction, the nitro group is meta directing because it
Lysine is
In the detection of III group basic radicals, $ {NH4OH}$ is added after $ {NH_4Cl}$ to
In the titration of Mohr's salt against $ {KMnO_4}$ the indicator used is
Electrolysis of brine gives a mixture of
The lowering in vapour pressure is maximum for
In benzene, each carbon atom undergoes
Highest osmotic pressure is shown by a solution of