A. its vapour pressure is low
B. it provides suitable meniscus for the inclined tube
C. its density is less
D. it provides longer length for a given pressure difference
Answer: Option A
This Question Belongs to Civil Engineering >> Hydraulics And Fluid Mechanics
A. 22.5 m/sec.
B. 33 m/sec.
C. 40 m/sec.
D. 90 m/sec.
A. the weight of the body
B. more than the weight of the body
C. less than the weight of the body
D. weight of the fluid displaced by the body
The difference of pressure between the inside and outside of a liquid drop is
A. $${\text{p}} = {\text{T}} \times {\text{r}}$$
B. $${\text{p}} = \frac{{\text{T}}}{{\text{r}}}$$
C. $${\text{p}} = \frac{{\text{T}}}{{2{\text{r}}}}$$
D. $${\text{p}} = \frac{{2{\text{T}}}}{{\text{r}}}$$
A. cannot be subjected to shear forces
B. always expands until it fills any container
C. has the same shear stress.at a point regardless of its motion
D. cannot remain at rest under action of any shear force
Alcohol is used in manometers, especially inclined ones, because its low density creates a longer, more visible deflection for small pressure changes, increasing measurement accuracy, and it forms a suitable, clear meniscus, unlike water which can be harder to read. It's also safer and less toxic than mercury, and has a low freezing point, making it good for cold conditions
All options are correct