किसी ठोस पदार्थ के बिना द्रव में बदले सीधे वाष्प अवस्था में परिवर्तित होने को कहते है ? - The change in the vapor state directly without any solid substance is called? - Kisi Thos Padarth Ke Bina Drav Me Badle Sidhe Washp Avastha Me Parivartit Hone Ko Kehte Hai ? General Science in hindi, Chemistry Kwathan question answers in hindi pdf UrdhvPaatan questions in hindi, Know About Aaswan General Science online test General Science notes in hindi quiz book Sanghnan