NEET UG CHEMISTRY MCQ: STATES OF MATTER

1 Medium

1 of 1

Analyzing +4 | -1

In a spinel structure, oxide ions are cubical closed packed whereas

1 / 8

th of tetrahedral voids are occupied by

A

ions and

1 / 2

of octahedral voids are occupied by

B

ions. The charge present on

A

and

B

ions will be

View answer and explanation

Correct option: A

{A}^{2+}, {B}^{3+}

Option A (

{A}^{2+}, {B}^{3+}

) is correct because, in a spinel structure, the oxide ions have a -2 charge, and to maintain charge neutrality, A must have a +2 charge and B must have a +3 charge.

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If for the gases, the critical temperatures are mentioned below i.e.

\begin{array}{cccccccccccccccccccc} {\underline {{\text{Gas}}} }&{\underline {\,{\text{Critical}}\,\,{\text{temperature}}} } \\ {\text{A}}&{{T_{{C_1}}}} \\ {\text{B}}&{{T_{{C_2}}}} \\ {\text{C}}&{{T_{{C_3}}}} \\ {\text{D}}&{{T_{{C_4}}}} \end{array}

{T_{{C_1}}} > {T_{{C_2}}} > {T_{{C_3}}} > {T_{{C_4}}}

Which of the following can be predicted Which of the following statements is incorrect? Among the following metals interatomic forces are probably weakest in: The interaction energy of London forces between two particles is proportional to

{r^x}

, where

r

is the distance between the particles. The value of

x

is In deriving the kinetic equation we make use of the root mean square speed of the molecules which is: Which force is strongest?