A supercritical fluid is formed whenever

Which gas is more easily liquified among following?

Which of the following gasses is/are lighter than air? 1. Hydrogen chloride 2. Sulfur dioxide 3. Helium

Which one of the following gas smells like a rotten egg?

Which of the following represent the suitable condition for the liquefaction of gases?

Two astronauts on the moon are standing 10 m apart. Astronaut A shouts toward Astronaut B and simultaneously flashes a light signal. Which of the following statements is correct?