200 Best MCQs on sterilization- biochemical engineering
Q17). The heat conduction in dry air is
a).less rapid than in steam
b).more rapid than in steam
c).similar to steam
d).none of these
Correct Answer:
less rapid than in steam
Explaination:
Q18). For laminar flow of Newtonian fluid through a smooth round pipe, the ratio of average fluid velocity to the maximum velocity is
a).0.5
b).0.75
c).0.87
d).0.37
Correct Answer:
0.5
Explaination:
Q19). The reduction of number of cells from 10^10 to one will result into the del factor (Δ) of
a).1
b).10
c).23
d).10^3
Correct Answer:
23
Explaination:
Q20). Sterilization can be carried out by
a).heat
b).radiation
c).chemical agents
d).all of these
Correct Answer:
all of these
Explaination:
Q21). The collection efficiency by the inertial impaction mechanism is the function of
a).Stokes and Reynolds number
b).Stokes and Schmidt number
c).Grashoff and Reynolds number
d).Stokes and Grashof number
Correct Answer:
Stokes and Reynolds number
Explaination:
Q22). The heated medium passes through a holding section, which is usually maintained in
a).adiabatic conditions
b).isothermal conditions
c).isotropic conditions
d).isobaric conditions
Correct Answer:
adiabatic conditions
Explaination:
Q23). The highest temperature which appears to be feasible for batch sterilization is
a).121°C
b).100°C
c).105°C
d).130°C
Correct Answer:
121°C
Explaination:
Q24). The K used in the equation for X10=2.303/K depends upon
a).nature of the filter material
b).linear velocity of the air passing through filter
c).both (a) and (b)
d).thickness of the filter
Correct Answer:
both (a) and (b)
Explaination: