बिना किसी मध्यवर्ती तरल अवस्था के, सीधे ठोस से गैस अवस्था में होने वाले चरण परिवर्तन को क्या कहा जाता है?

What is the physical state of water at its boiling point of 100°C at standard atmospheric pressure?

Which of the following gases is most easily liquefied due to its higher critical temperature and stronger intermolecular forces?

Chemically, 'dry ice' is: