List of top Chemistry Questions

Polymer formation from monomers starts by

On hydrolysis of starch, we finally get

Which of the following coordination compounds would exhibit optical isomerism ?

A certain reaction is non spontaneous at 298K. The entropy change during the reaction is 121 $JK^{-1}.$ Is the reaction is endothermic or exothermic ? The minimum value of $\Delta$H for the reaction is

$sp^3d^2$ hybridization is not displayed by :

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 :

The group having triangular planar structures 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 :

Mixture of chloroxylenol and terpineol acts as

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

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

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

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

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

Extraction of gold and silver involes leaching with $CN^-$ ion. Silver is later recovered by :-

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

The IUPAC name of the compound

When $BaCl_2$ is added to an aqueous salt solution, a white precipitate is obtained. The anion among $CO_3^{ 2-}, SO_3^{ 2-}$ and $SO_4^{ 2-}$ that was present in the solution can be :