List of top Chemistry Questions

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
Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states?
The dissociation constants for acetic acid and $HCN$ at $25^{\circ} C$ are $1.5 \times 10^{-5}$ and $4.5 \times 10^{-10}$ respectively. The equilibrium constant for the equilibrium $CN ^{-}+ CH _{3} COOH \rightleftharpoons HCN + CH _{3} COO ^{-}$ would be :
The main difference between formic acid and acetic acid is that formic acid is
Adipic acid is used in the preparation of
Which one of the following is the correct quadratic form of the Ostwald's dilution law equation?
The ore that is concentrated by Froth Floatation process is
The one which decreases with dilution is
The characteristic not related to alkali metal 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 standard temperature used in thermo- chemical calculations is
Which of the following is an intensive property?
A reaction is spontaneous at all temperatures when
Highest osmotic pressure is shown by a solution of
In benzene, each carbon atom undergoes