A. Indeterminate
B. Zero
C. Infinity
D. Same as that at any other temperature
Related Mcqs:
- _______________ number determines whether the fluid flow in an open channel is super-critical, critical or sub-critical ?
A. Mach
B. Reynolds
C. Froude
D. Weber - Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ?
A. °C
B. °F
C. °K
D. °R - Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called_______________________?
A. Tempering
B. Hardening
C. Annealing
D. Normalising - With increase in temperature, the surface tension of water_______________________?
A. Increases
B. Decreases
C. Remain constant
D. Increases linearly - Insulation of liquid surface can be achieved by _____________ on top of its surface?
A. Floating hollow polypropylene spheres
B. Spraying alumina powder
C. Putting cement
D. None of these - Ultimate strength in tension as compared to that in shear for steel is____________________?
A. Half
B. One third
C. One and half times
D. One fourth - Unit of surface tension in S.I. unit is_________________?
A. Watt/m
B. Joule/m2
C. Newton/m2
D. Joule/m - Surface tension of a liquid_________________?
A. Is due to intermolecular forces of cohesion
B. Decreases with rise in temperature
C. Is responsible for the spherical shape of an isolated liquid drop
D. All A, B. & C - The boiling & freezing points on a newly defined temperature scale in degree ‘D’ are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to _____________ °D ?
A. 140
B. 180
C. 240
D. 280 - The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K) ?
A. T
B. 1/T
C. T2
D. 1/T2