To which of the broad categories of industries does oil refinery and sugar mills belong?

Q.

Which of the broad categories of industries covers oil refinery and sugar mills?

(a) Primary

(b) Secondary

(c) Tertiary

(d) None of them

Q. Oil refineries, paper factories, textile and sugar mills, chemical factories are responsible for water pollution. These industries discharge harmful chemicals into rivers and streams and pollute water. The chemicals released include ________.

Q. Paper mills belongs to which of these industries?

Q. Which of the following ports does not have an oil refinery ?

Q. The white marble of Taj Mahal had turned dull due to the air pollution from the oil refinery and other industries in this area.