Railways Exam  >  Railways Questions  >  Mercury is considered as a superior barometri... Start Learning for Free
Mercury is considered as a superior barometric fluid due to its
  • a)
    Negligible small vapour pressure
  • b)
    High specific heat
  • c)
    High specific gravity
  • d)
    Convex meniscus
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Mercury is considered as a superior barometric fluid due to itsa)Negli...
Barometer is used to determine the local atmospheric pressure.
Mercury is employed in the barometer because its density is sufficiently high for a relative short column to be obtained and also because it has very small vapour pressure at normal temperature. High density scales down the pressure head (h) to represent same magnitude of pressure in a tube of smaller height.
Considered a small diameter glass tube with mercury at normal temperature is inverted within a small tank of mercury, an equilibrium will be reached.
PB = ρgh + Pv
Pv is the pressure exerted on the free surface of the mercury within the glass tube.
The vapour pressure of mercury at normal temperature and atmospheric pressure is only 0.16 Pa while the quantity ρgh is equal to approximately 105 Pa i.e. an insignificant fraction can be neglected.
Due to its small vapour pressure mercury used to be the standard fluid for measuring absolute pressures.
View all questions of this test
Explore Courses for Railways exam
Mercury is considered as a superior barometric fluid due to itsa)Negligible small vapour pressureb)High specific heatc)High specific gravityd)Convex meniscusCorrect answer is option 'A'. Can you explain this answer?
Question Description
Mercury is considered as a superior barometric fluid due to itsa)Negligible small vapour pressureb)High specific heatc)High specific gravityd)Convex meniscusCorrect answer is option 'A'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about Mercury is considered as a superior barometric fluid due to itsa)Negligible small vapour pressureb)High specific heatc)High specific gravityd)Convex meniscusCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Mercury is considered as a superior barometric fluid due to itsa)Negligible small vapour pressureb)High specific heatc)High specific gravityd)Convex meniscusCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Mercury is considered as a superior barometric fluid due to itsa)Negligible small vapour pressureb)High specific heatc)High specific gravityd)Convex meniscusCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Railways. Download more important topics, notes, lectures and mock test series for Railways Exam by signing up for free.
Here you can find the meaning of Mercury is considered as a superior barometric fluid due to itsa)Negligible small vapour pressureb)High specific heatc)High specific gravityd)Convex meniscusCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Mercury is considered as a superior barometric fluid due to itsa)Negligible small vapour pressureb)High specific heatc)High specific gravityd)Convex meniscusCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Mercury is considered as a superior barometric fluid due to itsa)Negligible small vapour pressureb)High specific heatc)High specific gravityd)Convex meniscusCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Mercury is considered as a superior barometric fluid due to itsa)Negligible small vapour pressureb)High specific heatc)High specific gravityd)Convex meniscusCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Mercury is considered as a superior barometric fluid due to itsa)Negligible small vapour pressureb)High specific heatc)High specific gravityd)Convex meniscusCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Railways tests.
Explore Courses for Railways exam

Top Courses for Railways

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev