For $NH_3$ gas,the $Z$ vs pressure $(P)$ curve at different temperatures is shown. What is the correct order of temperatures? (Given $T_B$ = Boyle temperature)

  • A
    $T_1 = T_2 = T_3 < T_B$
  • B
    $T_1 < T_2 < T_3 < T_B$
  • C
    $T_1 > T_2 > T_3 > T_B$
  • D
    $T_B < T_1 < T_2 < T_3$

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Assertion : Greater the value of van der Waal's constant $a$,greater is the liquefaction of gas.
Reason : $a$ indirectly measures the magnitude of attractive forces between the molecules.

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