Jamb 1978
Mercury is a better barometer fluid than water because
l. It needs no colouring
ll. Its density is many times greater than that of water
lll. It does not wet glass
IV. It has a high vapour pressure
V. It has a high boiling point
Which of the above statements are true?
A. I and II only
B. I,II and III only
C. III and IV only
D. IV and V only
E. III, IV and V only
ANSWER: Option B
EXPLANATION: Those characteristics of mercury worth noting down as questions may come in another format in your next exam.
Also note, the reason mercury doesn’t wet glass is because mercury has a high cohesive force.
Cohesive force: is the force of attraction between molecules of the same kind
Or click here to choose!
Of course, your opinion(s) and suggestion(s) is/are welcome. In case, you have any, kindly use our comment box.
If you have any questions, you can also drop them in the comment section.
If you find this post beneficial, feel free to use the share button to share with friends.
His Name is Tiamiyu Abdulbazeet Olawale. He is a student at the University of Ilorin studying Electrical and Electronics Engineering. He likes to give the latest updates about Nigeria and international institutions as he aims at helping people to lay their hands on the right information.