Which of the following is not a method for disinfection ?
ABoiling
BOzone treatment
CChlorination
DFlocculation
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The velocity ratio of the first system of pulleys:
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സ്കൂളിൽ നടക്കുന്ന എല്ലാ പ്രധാന സംഭവങ്ങളും രേഖപ്പെടുത്തുന്ന രജിസ്റ്റർ ?
In cyclones of northern hemisphere wind blows
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