AIIMS May 2011 – MCQ 66

All the following statements about purification of water are true except
A. Presence of clostridial spores indicate recent contamination
B. Coliforms must not be detectable in any 100ml sample of drinking water
C. Sodium thiosulphate is used to neutralize chlorine
D. Coliforms may be dtected by multiple tube method and indole production at 44 degrees

Please contribute to the discussion by posting the answer with references and pointing out any errors in the question!


Add a Comment

Your email address will not be published. Comments will be displayed only after moderation.

Read previous post:
AIIMS May 2011 – MCQ 65

True about sickle cell disease are all except A. Single nucleotide change results in change of glutamine to valine B....