What is the mass of 1 mole of water?

  1. 16 grams
  2. 18 grams
  3. 20 grams
  4. 14 grams

Answer (Detailed Solution Below)

Option 2 : 18 grams
Free
RRB Exams (Railway) Biology (Cell) Mock Test
10 Qs. 10 Marks 7 Mins

Detailed Solution

Download Solution PDF

The correct answer is 2 i.e. 18 grams.

Explanation:

  • 1 mole of H2O = Molecular mass of H2O in grams
    • Mass of 2H + Mass of 1O
    • 2 × 1 + 16 × 1
    • 2 + 16
    • 18 grams

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 real cash apk teen patti master gold download lucky teen patti teen patti online teen patti vip