States of Matter's Question 45 | Chemistry XI - Part 1 | NCERT Exemplar Questions

Physical Chemistry

Some Basic Concepts of Chemistry Structure of Atom States of Matter Thermodynamics Equilibrium

Inorganic Chemistry

Classification of Elements and Periodicity in Properties Chemical Bonding and Molecular Structure

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MCQ (Single Correct Answer)

Assertion (A) At constant temperature, $p V v s V$ plot for real gases is not a straight line.

Reason (R) At high pressure all gases have $Z>1$ but at intermediate pressure most gases have $Z<1$.

Both $A$ and $R$ are true and $R$ is the correct explanation of $A$

Both $A$ and $R$ are true but $R$ is not the correct explanation of $A$

$A$ is true but $R$ is false

$A$ is false but $R$ is true

MCQ (Single Correct Answer)

Assertion (A) The temperature at which vapour pressure of a liquid is equal to the external pressure is called boiling temperature.

Reason (R) At high altitude atmospheric pressure is high.

Both $A$ and $R$ are true and $R$ is the correct explanation of $A$

Both $A$ and $R$ are true but $R$ is not the correct explanation of $A$

A is true but R is false

$A$ is false but $R$ is true

MCQ (Single Correct Answer)

Assertion (A) Gases do not liquefy above their critical temperature, even on applying high pressure.

Reason (R) Above critical temperature, the molecular speed is high and intermolecular attractions cannot hold the molecules together because they escape because of high speed.

Both $A$ and $R$ are true and $R$ is the correct explanation of $A$

Both $A$ and $R$ are true but $R$ is not the correct explanation of $A$

$A$ is true but $R$ is false

$A$ is false but $R$ is true

MCQ (Single Correct Answer)

Assertion (A) At critical temperature liquid passes into gaseous state imperceptibly and continuously.

Reason (R) The density of liquid and gaseous phase is equal to critical temperature.

Both $A$ and $R$ are true and $R$ is the correct explanation of $A$

Both $A$ and $R$ are true but $R$ is not the correct explanation of $A$

$A$ is true but $R$ is false

$A$ is false but $R$ is true

MCQ (Single Correct Answer)

Assertion (A) Liquids tend to have maximum number of molecules at their surface.

Reason (R) Small liquid drops have spherical shape.

Both $A$ and $R$ are true and $R$ is the correct explanation of $A$

Both $A$ and $R$ are true but $R$ is not the correct explanation of $A$

$A$ is true but $R$ is false

$A$ is false but $R$ is true

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