निम्नलिखित में से किसी बस्तु के नमूने को हवा में खुला रखने पर कुछ समय पश्चात् गायब हो जाता है जैसे कपूर नैफ्थलीन अथवा शुष्क बर्फ इस परिघटना को कहते हैं / A sample of any of the following substances disappears after sometime when exposed to air like camphor, naphthalene or dry ice. This phenomenon is called
Verified Answer
A. ऊर्ध्वपातन / Sublimation
B. वाष्पीकरण / Evaporation
C. विसरण / Diffusion
D. विकिरण / Radiation
Explanation:
Sublimation is the process where a substance changes directly from a solid to a gas without passing through a liquid phase. Camphor, naphthalene, and dry ice (solid carbon dioxide) are common examples of substances that sublime at room temperature.