A.Mass number – Atomic number = Number of neutrons
B.Mass number – Atomic number = Number of protons
C.Number of neutrons – Number of protons = Mass number
D.Number of electrons outside the nucleus – Number of proton = Mass number
E.None of the above
A.Cost is high
B.Production rate is generally very low
C.Recesses can be easily formed
D.(A) and (B) above
E.(A) and (C) above
A.the temperature of the vapour phase is equal to the temperature of the liquid phase
B.the total pressure throughout the vapour phase is equal to the total pressure throughout the liquid phase
C.the tendency of each phase is exactly equal to its tendency to escape from the vapour phase to the liquid phase
D.all of the above
A.momentum diffusivity
B.thermal diffusivity
C.thermal conductivity
D.1/thermal diffusivity
A.limestone
B.quick lime
C.slaked lime
D.soda ash
A.6 x 1022
B.6 x 1023
C.6 x 1024
D.6 x 1025
A.160?
B.180?
C.190?
D.235?
A.Capacity to withstand shocks and vibrations
B.Low coefficient of friction
C.High compressive strength
D.High resistance to corrosion
E.All above
A.Edge to edge
B.Between inner circumference of two buttons
C.Between out circumference of two buttons
D.Between the centers of two buttons
E.Any of the above
