What is sublimation?

This question was previously asked in
RRB NTPC CBT 2 Level -6 Official paper (Held On: 9 May 2022 Shift 1)
View all RRB NTPC Papers >
  1. direct change of a substance from a gas to a liquid state
  2. direct change of a substance from a gas to a solid state
  3. direct change of a substance from a liquid to a gas state
  4. direct change of a substance from a solid to a gas state

Answer (Detailed Solution Below)

Option 4 : direct change of a substance from a solid to a gas state
Free
RRB Exams (Railway) Biology (Cell) Mock Test
10 Qs. 10 Marks 7 Mins

Detailed Solution

Download Solution PDF

The correct answer is the direct change of a substance from a solid to a gas state.

Key Points

  • Sublimation is a process in which a solid transforms directly into vapours without changing into liquid.
  • This phenomenon can be seen in camphor or naphthalene balls.
  • In the process snow or ice transforms directly into water vapour without becoming water.

Additional Information 

  • DepositionIt is the process of conversion of a gas to a solid.
  • Evaporation - It is the process of conversion of a liquid into gas.
  • Fusion/Melting - It is the process of conversion of a solid into a liquid.
  • Condensation - It is the process of conversion of a gas into a liquid.

Latest RRB NTPC Updates

Last updated on Jul 3, 2025

-> RRB NTPC Under Graduate Exam Date 2025 has been released on the official website of the Railway Recruitment Board. 

-> The RRB NTPC Admit Card will be released on its official website for RRB NTPC Under Graduate Exam 2025.

-> Candidates who will appear for the RRB NTPC Exam can check their RRB NTPC Time Table 2025 from here. 

-> TNPSC Group 4 Hall Ticket has been released on the official website @tnpscexams.in

-> The RRB NTPC 2025 Notification released for a total of 11558 vacancies. A total of 3445 Vacancies have been announced for Undergraduate posts like Commercial Cum Ticket Clerk, Accounts Clerk Cum Typist, Junior Clerk cum Typist & Trains Clerk.

-> A total of 8114 vacancies are announced for Graduate-level posts in the Non-Technical Popular Categories (NTPC) such as Junior Clerk cum Typist, Accounts Clerk cum Typist, Station Master, etc.

-> Prepare for the exam using RRB NTPC Previous Year Papers.

-> Get detailed subject-wise UGC NET Exam Analysis 2025 and UGC NET Question Paper 2025 for shift 1 (25 June) here

Hot Links: teen patti wink online teen patti teen patti master apk download teen patti winner rummy teen patti