Pure water has an water activity (Aw) of___________________?

Related Mcqs:

1. If a pure tall plant is crossed with a pure dwarf one, the ratio of tall pure dwarf in the F 2 generation after selling F1 plant will be___________________?

   A. 1:1
   B. 1:2
   C. 2:1
   D. 3:1

2. Dried foods have water activity (Aw) of___________________?

   A. 1.0
   B. 1.5
   C. 0.6
   D. non of these

3. What is the concentration of pure water?

   A. 55.5 mol/L
   B. 45.5 mol/L
   C. Both a and b
   D. none of these

   Submitted by: Shafiq Rehman

4. Corrositivity of water is an indication of___________________?

   A. Salinity
   B. Property of polluted material
   C. Both a & b
   D. None of the above

5. Fresh foods have water activity (Aw) of____________________?

   A. 0.99
   B. 1.0
   C. 1.6

6. Clear water with organic matter or sediment and minimum biological activity is known as__________________?

   A. Oligotrophic
   B. Mestrophic
   C. Eutrophic
   D. Hydrotrophic

7. Cholesterol is the natural form of___________________?

   A. Vitamin A
   B. Vitamin D
   C. Vitamin C
   D. Vitamin K

8. Most food poisoning organisms prefer to grow in the pH range of___________________?

   A. 4-5
   B. 4-5
   C. 5
   D. Above 5

9. The world’s food is lost by microbial spoilage upto the extent of___________________?

   A. One-half
   B. One-fourth
   C. One-fifth
   D. One-third

10. Pure line theory was developed by_______________?

    A. Thoday (1960)
    B. Mather (1951)
    C. Allard (1957)
    D. Johannsen (1903)