Related Questions

The angle of contact between a glass capillary tube of length 10 cm and a liquid is 90 degree . If the capillary tube is dipped vertically in the liquid, then the liquid:
A Will rise in the tube
B Will get depressed in the tube
C Will rise -up to 10 cm in the tube and will over flow
D Will neither rise nor fall in the tube.
The angle of contact between a glass capillary tube of length 10 cm and a liquid is 90 Degree. If the capillary tube is dipped vertically in the liquid, then the liquid:
A Will rise in the tube
B Will get depressed in the tube
C Will rise-up to 10 cm in the tube and will over flow
D Will neither rise not fall in the tube
Capillary rise of mercury in a small diameter tube is proportional to (where, d = diameter of the tube, σ = surface tension of mercury)
A d
B $$\frac{1}{{\text{d}}}$$
C $$\sigma $$
D $$\frac{l}{\sigma }$$
In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes
A Are easier to clean
B Are less prone to fouling
C Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less
D None of these
The capillary rise of mercury is maximum in glass tube of dia __________ mm.
A 0.5
B 1
C 2
D 5
Capillary rise of mercury in a small diameter tube is proportional of (where, d = mercury of the rube, σ = surface tension of mercury)
A d
B 1/d
C σ
D 1/σ
When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward __________ surface.
A Concave
B Convex
C Plane
D None of these
A certain lab experiments with white and brown mice only. IN one experiment, 2/3 of the mice are white. If there are 13 brown mice in the experiment how many mice in total are in the experiment?
A 26
B 36
C 39
D 21
For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.
A More
B Less
C Equal
D None of these
For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has
A More heating surface
B Less heating surface
C Equal heating surface
D Heating surface depends on other parameters

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