Chlorination of water may be harmful if the water contains_________________?

Related Mcqs:

1. Chlorination of water may be harmful if the water contains_________________?

   A. Ammonia
   B. Dissolved oxygen
   C. Carbon dioxide
   D. All

2. Chlorination of toluene in the presence of sublight produces_________________?

   A. Benzyl chloride
   B. o – chlorotoluene
   C. p – chlorotoluene
   D. benzoic acid

3. Radiations are harmful as it:___________?

   A. Causes skin cancer
   B. Causes anemia
   C. Alters body tissue
   D. is unstable

   Submitted by: Fahad Mehsud

4. The density of water may be__________________?

   A. Equal to that of ice
   B. Greater than that of ice
   C. Less than that of ice
   D. All are possible

5. Formalin consists of mixture of formaldehyde methyl alcohol and water Percentage of water in it is________________?

   A. 60%
   B. 50%
   C. 52%
   D. 8%

6. The method in which more steam is passed through the water Gas to oxidize CO to Carbon Dioxide which is then more soluble in water than Hydrogen gas and gets separated is called______.

   A. liquification process
   B. Bosch  Process
   C. Fragmentation
   D. Thermal decomposition

   Submitted by: Aamir khan Hullio

7. In water molecule, Hydrogen & water are held together by ______ bond.

   A. Ionic
   B. Covalent
   C. Hydrogen
   D. Dating

   Submitted by: Aamir khan Hullio

8. Acid present in acid rain may be__________________?

   A. H2SO4
   B. HNO3
   C. both A and B
   D. none

9. Hypochlorous acid is used for disinfecting the water it reacts with the dissolved ammonia producing___________________?

   A. NH2Cl
   B. NHCI2
   C. NCI2
   D. all of the above

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

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