List of top Chemistry Questions

In the lead-acid battery during charging, the cathode reaction is

$Fe^{3+}$ is reduced to $Fe^{2+}$ by using -

The correct statement(s) about $Cr^{2+}$ and $Mn^{3+}$ is (are) - [Atomic numbers of $Cr = 24$ and $Mn = 25$]

Amorphous solids are characterised by property as

The IUPAC name of the coordination compound $\left[ Co \left( H _{2} O \right)_{2}\left( NH _{3}\right)_{4}\right] Cl _{3}$ is

The electronegativity of elements helps in predicting

$20\, dm^{3}$ of $SO_{2}$ diffuse through a porous partition in $60\, s$. What volume of $O_{3}$ will diffuse under similar conditions?

Which one of the following is planar?

Which of the following has maximum number of isotopes?

Which of the following metals does not show variable valency in $d$-block?

Which of the following oxyacids does not exist ?

Which one of the following is not a condensation polymer ?

Which arrangement of electrons leads to ferromagnetism?

The unit of ebullioscopic constant is ______.

The reaction of ${HCOOH}$ with conc. ${H_2SO_4}$ gives

The conversion of $A \rightarrow B$ follows second order kinetics. If $[A]$ is increased 3 times then rate of formation of $[B]$ is

Sulphur in + 3 oxidation state is present in

$Propan-1-ol$ can be prepared from propene by

Ethylene-1, 2-diamine is an example of

During extraction of aluminium from bauxite,

Choose the correct alternative same as; Radium, Polonium and Uranium

Carbonyl (CO) stands first in spectrochemical series as a

Bithional is an example of

Para hydrogen is

Which of the following sets of quantum numbers represents the highest energy of an atom?