AIEEE 2006 Mock Test

The following mechanism has been proposed for the reaction of $\text{NO}$ with ${\text{Br}}_2$ to form $\text{NOBr}$:$\text{NO}(g)+{\text{Br}}_2(g)\rightleftharpoons {\text{NOBr}}_2(g)\text{ (fast)}$${\text{NOBr}}_2(g)+\text{NO}(g)\to 2\text{NOBr}(g)\text{ (slow)}$ If the second step is the rate determining step, the order of the reaction with respect to $\text{NO}(g)$ is:

Lanthanoid contraction is caused due to:

Resistance of a conductivity cell filled with a $0.1\text{M}$ solution of an electrolyte is $100\Omega$. The conductivity is $1.29{\text{S m}}^{-1}$. Resistance of the same cell when filled with $0.2\text{M}$ of the same solution is $520\Omega$. The molar conductivity of $0.2\text{M}$ solution of the electrolyte will be:

The ionic mobility of alkali metal ions in aqueous solution is maximum for:

Density of a $2.05\text{M}$ solution of acetic acid in water is $1.02\text{g/mL}$. The molality of the solution is: