UTpaper

Free mock tests & test series

Question 9Asked in RRB JE CBT-1, 19 Feb 2026, Shift 1 (9:00 AM)

When two aqueous solutions react inside a sealed flask and form products, what

When two aqueous solutions react inside a sealed flask and form products, what happens to the total mass of the system?
  1. AIt fluctuates during reaction
  2. BIt increases due to gas formation
  3. CIt decreases due to precipitation
  4. DIt remains unchanged throughout
Show answerHide answer

Correct answer: (D) It remains unchanged throughout

From RRB JE CBT-1 PYQ 19 Feb 2026, Shift 1 (9:00 AM)

This is question 9 of RRB JE CBT-1 PYQ 19 Feb 2026, Shift 1 (9:00 AM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.