The container in which the glass tube is inverted is open from the top in a mercury barometer. What problem may arise due to this?
A
Atmospheric pressure may not be recorded correctly.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Calibrations may be disturbed.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Impurities may fall into the tube making the mercury impure.
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
It may form a bigger meniscus.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is C Impurities may fall into the tube making the mercury impure. The container in which the glass tube is inverted is open from the top in a mercury barometer. Hence, impurities may fall into the tube making the mercury impure.