1. The sterilization method depends
A.nature of additive
B.volume and feed rate
C.both (a) and (b)
D.none of these
2. The specific death rate of an organism can be expressed as
A.ln 2/D
B.D/ln2
C.D.ln2
D.2.0.3/ln2
3. The interception efficiency can be expressed as (where dp is the particle diameter and Dc cylindrical collection diameter)
A.dp/Dc
B.dp x Dc
C.dp/Dc x 100
D.dpDc/100
4. The relationship between the del factor, temperature and time is given as
A.Δ = A.t. e-E/RT
B.Δ = 1/(A.t. e-E/RT)
C.Δ = A.t. eE/RT
D.Δ = A.t.T
5. The del factor (Δ) increases as the final number of cells
A.decreases
B.increases
C.zero
D.constant
6. The overall del factor (Δ) may be represented as
A.Δoverall = Δheating + Δholding- Δcooling
B.Δoverall = Δheating + Δholding+ Δcooling
C.Δoverall = Δheating - Δholding+ Δcooling
D.Δoverall = Δheating - Δholding- Δcooling
7. The filter material used for air filtration system is/are
A.glass wool
B.glass fibre
C.norite
D.all of the above
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