The main product of bacterial action is_________________?

Related Mcqs:

1. Any process of chemical decay of metals due to the action of surrounding medium is called__________________?

   A. activation
   B. enameling
   C. corrosion
   D. coating

2. Bromine can be liberated from KBr solution by the action of _______________?

   A. Iodine solution
   B. Chlorine
   C. NaCl
   D. Ki

3. Law of mass action was proposed by Goldberg and Peter Waage in _________?

   A. 1864
   B. 1866
   C. 1888
   D. None of These

   Submitted by: Name

4. Ozone is formed in the upper layer of the atmosphere from oxygen by action of:____________?

   A. Free radicals
   B. Cosmic rays
   C. Nitrogen oxides 
   D. UV -rays

   Submitted by: Said wali shah

5. In the purification of portable water the coagulant used is_________________?

   A. alum
   B. nickel sulphate
   C. copper sulphate
   D. barium sulphate

6. Requirement of macronutrient per acre of the land is_________________?

   A. 5 to 200 kg
   B. 20-200 kg
   C. 200-400 kg
   D. 30-400 kg

7. The main pollutant of leather tanneries in the waste water is____________________?

   A. chromium III
   B. chromium IV
   C. chromium V
   D. chromium VI

8. Which of the following gases is the main cause of acid rain ?

   A. CO
   B. NO2
   C. both a & b
   D. none of the above

9. The composition of brown ring in nitrate test is_________________?

   A. FeSO4.No
   B. FeSO4.No2
   C. FeSO4.No3
   D. FeSO4.N2o

10. Treating phenol with formaldehyde in the presence of dilute base forms Bakelite. The process involved is_________________?

    A. oxidation
    B. elimination
    C. condensation polymerization
    D. additional polymertization