JEE Main 2015 · 11 Apr · Shift 1 · Chemistry Q50

ChemistrySingle correct+4 / -1Question 50 of 90

Addition of phosphate fertilisers to water bodies causes :

enhanced growth of algae

increase in amount of dissolved oxygen in water

deposition of calcium phosphate

increase in fish population

Answer and worked solution

Official answer: A

Phosphates are nutrients: they cause eutrophication and algal blooms, which then lower the dissolved oxygen.

JEE Main 2015 · 11 Apr · Shift 1, Chemistry question 50