NEET 2023 Question Paper Mock Test

Which one is an example of heterogenous catalysis?

The number of $\sigma$ bonds, $\pi$ bonds and lone pair of electrons in pyridine, respectively are:

The correct order of energies of molecular orbitals of ${\text{N}}_2$ molecule is:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:Assertion A: Helium is used to dilute oxygen in diving apparatus.Reason R: Helium has high solubility in ${\text{O}}_2$.In the light of the above statements, choose the correct answer:

For a certain reaction, the rate $=k[\text{A}{]}^2[\text{B}]$. When the initial concentration of A is tripled keeping concentration of B constant, the initial rate would: