Related Questions

Melt spinning of polymers involves the forcing of polymer melt through spinnerettes (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the __________ fibres.
A Acrylic
B Polyester
C Nylon 6:6
D Polypropylene
The separation of liquid droplets from the vapor is done by a/an __________ , in the evaporators.
A Steam ejector
B Entrainment separator
C Compressor
D Vacuum pump
The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and re-condensed, then the liquid with the next higher boiling point is then evaporated and re-condensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called
A Cracking
B Fractional distillation
C Full distillation
D Carbonisation
The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called
A Surface tension
B Compressibility
C Capillarity
D Viscosity
The process of changing the shape of grinding wheel as it becomes worn due to breaking away of the abrasive and bond, is called
A Truing
B Dressing
C Facing
D Clearing
Certain fish eggs contain droplets of oil, ___ to float on the surface of the water .
A allowing them
B allows them
C they are allowed
D this allows them
Certain fish eggs contain droplets of oil,_____ to float on the surface of the water.
A allowing them
B allows them
C they are allowed
D this allows them
Why do water droplets always take a round shape when dropped onto plane surfaces?
A Due to gravity
B Due to atmospheric pressure
C Due to the presence of Eddy current in the air
D Due to exertion of surface tension by the molecules
Release of water from plants as water droplets is known as
A Root pressure
B Transpiration
C Osmotic pressure
D Guttation
Spherical shape of mercury droplets is due to its
A High viscosity
B Low surface tension
C High density
D High surface tension

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