Question

Assertion:

The triple point is when ice, liquid water, and water vapour coexist in a dynamic equilibrium.

Reason:

The triple point requires low temperatures and high pressures.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct and Reason is not the correct explanation for Assertion
• C. Assertion is incorrect but Reason is correct
• D. Both Assertion and Reason are incorrect
  

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

$\begin{array}{c}\text{Triple Point is related to the phase diagram of water.}\\ \text{Phase diagram is basically a plot of pressure}\text{vs temperature}\\ \text{and with that given}P\text{- T condition, the state of the matter}\\ \text{is estimated.}\end{array}$

$\begin{array}{c}\text{In case of water, triple Point is that}P-T\text{condition where}\\ \text{water can exist in its solid, liquid, as well as vapour state,}\\ \text{in a dynamic equilibrium.}\end{array}$

$\begin{array}{c}\text{At triple point, both pressure and temperature are found}\\ \text{to be low, being high pressure overall.}\\ \text{so, the correct option is}\left(A\right).\end{array}$