Q: Which one of the following is a hygienic way of disposing solid waste and is more suitable if the waste contains more hazardous material and organic content?
(a)Composting
(b)Incineration
(c)Oxidation
(d)Subgrading
Correct Answer: (b)
The correct answer is (d) 'Subgrading'. This question from the Science & Technology domain tests knowledge of Chemistry.