Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEETChemistryStates of Matter

What disappears at the critical temperature of a substance?

Options

  1. AThe substance itself
  2. BThe surface separating two phases
  3. CThe density of the substance
  4. DThe continuity between the gaseous and liquid states

Correct answer

B. The surface separating two phases

Step-by-step solution

At the critical temperature, the surface separating two phases disappears.

Practice States of Matter on Quantrex Academy →

More from States of Matter

A steel cylinder of 8 litres capacity contain hydrogen gas at 12 atm pressure, At same temperature, how many cycle tubes of 4 litre capacity at 2 atmphere can be filled up with thi 2026The volume occupied by a given mass of gas at 298 K is 35 mL at 1 atmospheric pressure. Calculate the volume of the gas if pressure is decreased to 0.75 atmosphere at constant temp 2026A bubble of air is underwater at temperature 15 ^ C and the pressure 1.5 bar . If the bubble rises to the surface where the temperature is 25 ^ C and the pressure is 1.0 bar , what 2026Calculate the work done terms of dm ^3 bar when 200 ml of ethylene gas and 150 ml of HCl gas were allowed to react at 1 bar pressure. 2026A force of 450 N acts on a surface area of 15 cm ^2 . Find the pressure exerted. 2026Calculate the pressure in atm of 48 g oxygen gas in a 2 dm ^3 container at 27 ^ C . [ R = 0.0821 atm dm ^3 K ⁻¹ mol ⁻¹ ] 2026Identify false statement about real gas from following . 2026Find the number of molecules in 0.25 m ^3 of the gas at a pressure 2.0 10^2 kPa and a temperature 300 K . [R = 8.314 J K ⁻¹ mol ⁻¹] 2026 Full States of Matter list All NEET PYQs