Options:
A.
B.
C.
D.
Sign in to view the correct answer and detailed explanation.
Study with fewer interruptions on Android
Use Ulearngo on a verified device for smoother past-question study.
Ulearngo is an independent study app. It is not affiliated with, endorsed by, or representing Joint Admissions and Matriculation Board (JAMB). Always confirm official exam, admission, registration, syllabus, timetable, and result information from JAMB official website.
Earlier discussion
1 older comment kept for context.
Doctor Strange
A mercury barometer is a barometer in which the weight of a column of Mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of Mercury at the base of the Mercury column with the height of the column varying with atmospheric pressure