List of top Chemistry Questions

An organic compound A (C₄H₉Cl) on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative then, A is

What is the standard reduction potential $(E^{\circ}) $ for ${Fe^{3+} \to Fe}$ ? Given that : ${Fe^{2+} + 2e^{-} -> Fe ; E^{\circ}_{Fe^{2+} / Fe} = - 0.47 V }$ ${Fe^{3+} + e^{-} -> Fe^{2+} ; E^{\circ}_{Fe^{3+} / Fe^{2+}} = + 0.77 V }$

The normality of 10% (w/v) of acetic acid is

On hydrolysis of starch, we finally get

The correct order of basic strength of the following are

Which of the following sodium compound/compound(s) are formed when an organic compound containing both nitrogen and sulphur is fused with sodium ?

In the reaction,

In the given reaction (B) is

Polymer formation from monomers starts by

Which of the following coordination compounds would exhibit optical isomerism ?

Among the following, correct statement is :

Which of the following is dependent on temperature?

Both lithium and magnesium display several similar properties due to the diagonal relationship; however, the one which is incorrect, is :

The electronic configuration with the highest ionization enthalpy is :

A water sample has ppm level concentration of following anions $F^{-} = 10 ;\, SO^{2-}_4 = 100 ;\, NO^{-}_3 = 50$ The anion/anions that make/makes the water sample unsuitable for drinking is / are :

The correct increasing order of basic strength for the following compounds is :

The number of geometrical isomers of $CH_{3} CH=CH-CH=CH-CH=CHCl$ is

The value of the reaction quotient (Q) for the following cell:\[ \text{Zn(s) | Zn}^{2+} (0.01 \text{ M}) || \text{Ag}^+ (1.25 \text{ M}) | \text{Ag(s)} \] is:

Correct increasing order for the wavelengths of absorption in the visible region the complexes of $Co^{3+}$ is :

A gas is allowed to expand in a well insulated container against a constant external pressure of $2.5\, atm$ from an initial volume of $2.50\, L$ to a final volume of $4.50\, L$. The change in internal energy $\Delta U$ of the gas in joules will be

Mixture of chloroxylenol and terpineol acts as

In preparation of sulphuric acid from sulphur dioxide in lead chamber process. What substance is used as a catalyst ?

The process of separation and purification of expressed protein before marketing is called :

The species, having bond angles of $120^{\circ}$ is :-

Name the gas that can readily decolourise acidified $KMnO_4$ solution :

What type of sugar molecule is present in $DNA$ ?