NEET UG CHEMISTRY MCQ: STATES OF MATTER

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Analyzing +4 | -1

Statement - I: At 273 K, hydrogen and helium gases have positive slope at all pressure in PV
vs P graph.

Statement - II: Complete combustion of any substance requires more moles of oxygen than
the moles of substance burnt.

View answer and explanation

Correct option: A

If both Statement-I and Statement-II are true, and Statement-II is the correct
explanation of Statement-I

Option B (If both Statement-I and Statement-II are true but Statement-II is not the correct explanation of Statement-I) is incorrect. Statement I is true because hydrogen and helium have positive deviations from ideal behavior at all pressures at 273 K. Statement II is true, but it doesn't explain Statement I.

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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?