Author: Rajalakshmi Rahul

Acid rain

By on September 23, 2010 1 Comment

Air is polluted by both natural and artificial sources. The major contributors of acid rain are the oxides of sulphur and oxides of nitrogen.

Quality control measures

By on September 10, 2010 6 Comments

Quality as defined by ISO 9000:2000 is the degree to which a set of inherent characteristics fulfill certain requirements [Ross, 2005].