While collecting sample of water from tap the a) Mouth of tap is heated for 5 minutes* b) Mouth of tap is heated for 10 minutes c)Mouth of tap is not heated d)none of the above

While collecting sample of water from tap the
a) Mouth of tap is heated for 5 minutes*
b) Mouth of tap is heated for 10 minutes  
c)Mouth of tap is not heated  
d)none of the above
by

1 Answer

Answer :

a) Mouth of tap is heated for 5 minutes*
by

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