Sterilization – Section 1

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 d_p is the particle diameter and D_c cylindrical collection diameter)

A. d_p/D_c
B. d_px D_c
C. d_p/D_cx 100
D. d_pD_c/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. e^E/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