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*cylindrical collection diameter)

_{c }A. *d _{p}*/

*D*

_{c}B.

*d*x

_{p}*D*

_{c}C.

*d*/

_{p}*D*x 100

_{c}D.

*d*/100

_{p}D_{c}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